{"title":"Headphone Amplifier","description":"","products":[{"product_id":"doukaudibestseller.com-nobsound-ns-08e-mini-vacuum-tube-headphone-amplifier-hifi-desktop-stereo-audio-preamp","title":"Nobsound P32 Mini Vacuum Tube Headphone Amplifier Desktop Preamp","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli data-sourcepos=\"7:1-8:375\"\u003e\u003cspan\u003ePowerful Output for Any Headphone: With up to 1000mW of power, the P32 easily drives everything from sensitive earbuds to large gaming and high-impedance headphones (24-600Ω). You'll hear loud, clear, and dynamic sound, finally unlocking what your headphones are truly capable of.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli data-sourcepos=\"10:1-11:291\"\u003e\u003cspan\u003eAlso a Tube Preamp to Boost Your Speakers: Connect from 3.5mm jack and use P32 as a stereo tube preamp to add warmth and character to your desktop active speakers or a home power amplifier. P32 provides a significant upgrade to your entire sound system.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eWarm, Rich Tube Sound: Instantly upgrade your computer or phone's audio with the warm, smooth sound of vacuum tubes. The P32 makes your music feel richer and vocals clearer, bringing new life to your favorite songs, allowing music lovers to hear more detail without any distracting background hiss. \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli data-sourcepos=\"16:1-17:287\"\u003e\u003cspan\u003ePlug-and-Play with All Your Devices: The P32 works with various sources, featuring both RCA and 3.5mm AUX inputs to connect with your PC, phone, TV, or tablet. For your headphones, it has both 3.5mm and 6.35mm jacks, so you'll never need to search for an adapter again.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli data-sourcepos=\"19:1-20:295\"\u003e\u003cspan\u003eFuture-Proof Customizable Sound: This is a headphone amp that can grow with you. For those who like to experiment, the vacuum tubes and op-amps are swappable, allowing you to easily tweak the sound. You can explore the HiFi world at your own pace without needing to buy a new device.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eWarm tips\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e1. Please use the supplied DC 5V\/2A power adapter to ensure optimal performance of the P32. If using other power supply, make sure it provides at least 2A current. Otherwise, the P32 may not function properly. \u003c\/div\u003e\n\u003cdiv\u003e2. The RCA and AUX inputs, as well as the 3.5mm and 6.35mm outputs, work at the same time. Please don’t connect the two inputs at the same time, or else audio signals will be mixed.\u003c\/div\u003e\n\u003cdiv\u003e3. P32 adopts 2PCS pluggable NE5532 op-amps, which can be upgraded by LME49720NA-DIP-8 or any other dual op-amp in an 8-pin package with an output current exceeding 50mA.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e4. \u003c\/span\u003e\u003cspan\u003eP32 adopts pluggable tube socket, default 6J5 vacuum tubes, can be replaced by 6J1, 5654, 6AK5, EF95 etc. For a full list of compatible tube models, please refer to the user manual.  \u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e5. P32 can easily drive all headphones even with high-impedance such as HD580\/HD600\/HD650\/K701\/K702\/Q701\/DT880\/T70\/T90\/SR225\/SR325\/RS1e etc.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eBrand: Nobsound \u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eModel: P32\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eAudio input: Stereo RCA\/3.5mm AUX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eAudio output: 3.5mm\/6.35mm headphone jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eOutput power: ≥1000mW (32Ω)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eMatched headphone impedance: 24-600Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: 20-30KHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: ≥ 110dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOutput voltage swing: 24V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInput voltage: DC 5V\/≥ 2A (5.5*2.5mm)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W*D*H): 78*82*32mm \/ 3.07*3.23*1.26in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage dimensions (W*D*H): 135*85*90mm \/ 5.31*3.34*3.54in \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet weight: 220g \/ 0.48lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 400g \/ 0.88lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePacking list\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* P32 Headphone Amp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2* 6J5 Tubes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* DC 5V Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47406902149352,"sku":"XZ-P32-US","price":46.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406902182120,"sku":"XZ-P32-UK","price":46.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406902214888,"sku":"XZ-P32-DE","price":46.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406902247656,"sku":"XZ-P32-AU","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406902280424,"sku":"XZ-P32","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/XZ-P32_1_1.jpg?v=1760926420"},{"product_id":"doukaudibestseller.com-nobsound-ns-20g-mini-bluetooth-5-0-digital-amplifier-hifi-stereo-headphone-amp-100w-100w","title":"Nobsound NS-20G Mini Bluetooth 5.0 Digital Amplifier HiFi Stereo Headphone Amp 100W+100W","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003c!-- x-tinymce\/html --\u003e\u003c\/p\u003e\n\u003cdiv align=\"center\" style=\"text-align: left;\"\u003e\n\u003cstrong\u003e\u003cspan\u003eNS-20G amplifier is only suitable for 5-8 inches \/ 4-8 Ohms \/ 20-120W speakers, using mismatched speakers may result in poor sound and over-heat \u0026amp; over-load protection which will cause lag, power-off even damage.\u003c\/span\u003e\u003c\/strong\u003e \u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003e① Mini Elegant Size But Powerful\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eNS-20G mini compact size suits very well for home and desktop use, and the output power is improved to 200W (100W*2) with 2PCS TPA3116 chip.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eYou will be amazed by its output power compared to its size when you see it. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003e② HiFi Sound and Bluetooth Lossless Transmission\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003e \u003cspan\u003eHiFi clear and clarity sound, no audible noise. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eBluetooth 5.0+EDR+DSP (Digital Signal Processing) to \u003cspan\u003eachieve real wireless lossless signal transmission and enjoy \u003c\/span\u003e\u003cspan\u003emuch better Hi-Fi sound quality \u003c\/span\u003e\u003cspan\u003ewithin 15M distance, which brings you high-grade listening feast without any background noise.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003e ③ Strong Applicability and Compatibility\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003eNS-20G can be used as headphone amplifier(Only support 15-32Ω headphones). Bluetooth and AUX input \u003cspan\u003ecan be widely applied to All Your Favorite Devices and 100W×2 output power can drive most home speakers.\u003c\/span\u003e \u003c\/li\u003e\n\u003cli\u003eBecause the Speaker and Headphone can output at the same time, the phone output connect to active subwoofer and speaker jacks connect to passive speakers can make up 2.1 channel audio system, which will enhance the bass effect greatly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\u003cstrong\u003e④ Compact and Attractive Appearance\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e Integrated aluminum case with crystal speaker jacks, multifunction decoding knob and dynamic volume LED display, this unique design makes it beautiful and practical as well.\u003c\/li\u003e\n\u003cli\u003e5 fashionable colors for you freely to choose.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eColor: Black \/ Silver \/ Gold \/ Blue \/ Red\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBluetooth distance: 15 meters\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBluetooth standard protocol: Bluetooth 5.0+ EDR + DSP\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRated power: 200W (100W×2)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio Input: Bluetooth, AUX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAmplifier chip: American TI Texas Instruments TPA3116 ×2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePower input: DC12V-20V \/ above 60W\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions: (W)78 × (D)90 × (H)23 mm (3.07 × 3.54 × 0.91 inches)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNet Weight: \u003c\/span\u003e\u003cspan\u003e160g\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eAudio Output:  Banana Speaker Jacks, 3.5mm Headphone\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage Weight: 300g\/500g (Without\/With Power Supply)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003e\u003cspan\u003ePacking List\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cdiv\u003e1 * NS-20G Amplifier\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cdiv\u003e1 * 19V Power Supply \u003cspan\u003e(Optional)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cdiv\u003e1 * RCA Audio Cable\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cdiv\u003e1 * 3.5mm Audio Cable\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003e1 * Manual\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"With Power Supply \/ US","offer_id":43054973026536,"sku":"DZ045H-19VDY-US","price":55.99,"currency_code":"USD","in_stock":true},{"title":"With Power Supply \/ UK","offer_id":47406892482792,"sku":"DZ045H-19VDY-UK","price":55.99,"currency_code":"USD","in_stock":true},{"title":"With Power Supply \/ EU","offer_id":47406892515560,"sku":"DZ045H-19VDY-DE","price":55.99,"currency_code":"USD","in_stock":true},{"title":"With Power Supply \/ AU","offer_id":47406892548328,"sku":"DZ045H-19VDY-AU","price":55.99,"currency_code":"USD","in_stock":true},{"title":"With Power Supply \/ Other","offer_id":47406892581096,"sku":"DZ045H-19VDY","price":55.99,"currency_code":"USD","in_stock":true},{"title":"Without Power Supply \/ US","offer_id":43054990426344,"sku":"DZ045H-US","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Without Power Supply \/ UK","offer_id":47406892613864,"sku":"DZ045H-UK","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Without Power Supply \/ EU","offer_id":47406892646632,"sku":"DZ045H-DE","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Without Power Supply \/ AU","offer_id":47406892679400,"sku":"DZ045H-AU","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Without Power Supply \/ Other","offer_id":47406892712168,"sku":"DZ045H","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/1_43d89fe4-aafb-4e63-be40-eb43139ec437.jpg?v=1651893133"},{"product_id":"nobsound-p1-hifi-bluetooth-5-0-ge5654-vacuum-tube-preamp-usb-dac-amp-stereo-receiver-aptx-hd","title":"Douk Audio P1 HiFi Bluetooth 5.0 Vacuum Tube Preamp USB DAC Stereo Headphone Amplifier APTX-HD","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cp\u003e\u003cstrong style=\"font-size: 0.875rem;\"\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWith 3 kinds of audio input(Bluetooth\/USB\/RCA) and 2 kinds of output(RCA\/3.5mm headphone), P1 can be used as HiFi tube Preamp, USB DAC or headphone amp with HiFi clear, warm, dynamic, sweet tube sound, bringing extremely high-quality listening experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBluetooth 5.0 (QCC3034) supporting APTX-HD lossless transmission. PC-USB (CM6642) supporting 24bit 192KHz and compatible with Windows\/Mac\/Linux system, matching well with many audio devices such as iPod, Phone, MP3 players, TV, Blu-ray players, Echo Dot, CD players, etc. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAdopting NE5532 op amp+classic 47 headphone amp architecture which can drive 32-300 ohms headphones, and a bypass switch is specially designed to turn on\/off the tone control, more convenient to enjoy original sound or obtain more delicate sound with treble and bass control knob, adding much fun and higher playability. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eExquisite appearance with proper size, blue and orange light decorating vacuum tube, makes it fashionable and attractive, bringing wonderful auditory and visual enjoyment, very suitable for home and desktop audio system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eChip Architecture: CM6642+QCC3034+NE5532+classic 47 \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003c!-- x-tinymce\/html --\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePC-USB Input Sampling Frequency: 192K\/24Bit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTHD: 0.01%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePC-USB System: supported XP\/W7\/W8\/W10\/MAC\/Linux\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBluetooth VER: 5.0\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHeadphone matching impedance: 32-300Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSNR: 103dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHeadphone Max power output: 160mW 32Ω load\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eWorking voltage: DC12V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBass \u0026amp; Treble Range: ±6dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eProduct Dimension: 180*118*36mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eRCA output level: 2.3V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFrequency Range: 20Hz-20kHz(±3dB)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePackage Dimension: 240*210*60mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eProduct Weight: 0.47kg\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003ePacking List\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*P1 Preamp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2*JAN5725 Tube\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*DC 12V Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*USB Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*Bluetooth Antenna \u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47406480195816,"sku":"DZ066-US","price":89.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406480228584,"sku":"DZ066-UK","price":89.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406480261352,"sku":"DZ066-DE","price":89.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406480294120,"sku":"DZ066-AU","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406480326888,"sku":"DZ066","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/4_6c9fd34d-07b6-41b2-ba86-3467f9b6ff4d.jpg?v=1744601652"},{"product_id":"douk-audio-q3-dac-digital-to-analog-converter-decoder-usb-coax-opt-headphone-amp","title":"Nobsound Q3 Mini USB DAC Digital to Analog Converter Coaxial\/Optical Audio Decoder Headphone Amp","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eQ3 is a digital to analog converter with PC-USB\/Optical\/Coaxial input and RCA\/3.5mm headphone output, which can used with laptop, desktop computer, mobile phone(with OTG function), TV, Apple TV, DVD\/Blu-Ray player or CD player and so on, meeting different requirements of home stereo audio system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePC-USB is plug-and-play, no need for any driver, it can process digital audio at any bit depth up to 24 bits and any sample rate to 96 KHz with high signal-to-noise ratio and \u003cspan data-mce-fragment=\"1\"\u003elow distortion. High-performance headphone output is designed for a wide range of headphones.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNot only with volume control knob that can adjust both the headphones and RCA output, but with treble and bass control which is specially designed for audiophile to enjoy much delicate and smooth HiFi sound.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAdopting high-end chip combination SA9023 USB chip+CS8412 DAC chip+97220 headphone amp chip to achieve better sound quality, and \u003cspan data-mce-fragment=\"1\"\u003eNE5532 op amp which uses analog circuit design to greatly improve treble and bass sound effects.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMini size with exquisite appearance, black aluminum case looks more popular and attractive, very suitable for home and desktop audio system use.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePC-USB input sampling frequency: 96K\/24Bit\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eOptical\/Coaxial input sampling frequency: 192K\/24Bit\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFrequency range: 20Hz-20KHz(±3dB)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePC-USB system supported: XP\/W7\/W8\/W10\/MAC\/Linux\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBass \u0026amp; Treble range: ±6dB\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSNR:  ≥105dB\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTHD: 0.01%\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eRCA output level: 2.3V\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHeadphone matching impedance: 16-200Ω\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHeadphone max power output: 100mw (32Ω load)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWorking voltage: DC 5V\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDimensions: (L*W*H)73*98*33 mm \/ 2.87*3.86*1.3 in\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNet weight: 200 g \/ 0.44 lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cstrong\u003ePacking List\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e1* Q3 DAC\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1* USB Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1* USB Data Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1* Optical Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406975353064,"sku":"DZ067-US","price":52.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406975385832,"sku":"DZ067-UK","price":52.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406975418600,"sku":"DZ067-DE","price":52.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406975451368,"sku":"DZ067-AU","price":52.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406975484136,"sku":"DZ067","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/DZ067_22.jpg?v=1652245464"},{"product_id":"douk-audio-p2-mini-bluetooth-5-0-vacuum-tube-preamp-hifi-usb-player-stereo-audio-headphone-amp","title":"Douk Audio P2 Mini Bluetooth 5.0 Vacuum Tube Preamp USB Player Stereo Headphone Amplifier","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\"\u003e\u003cstrong\u003eWarm Tips\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003eFrom 29\/05\/2024, the 6K4 tubes will be upgraded to American 6186 or 6AG5 (will be shipped at random) but the price remains the same.\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003eMultiple audio inputs: with Bluetooth\/RCA\/U-disk\/TF card inputs, can be perfectly compatible with iPod, Phone, MP3, TV, CD players, laptop, desktop computer or other streaming media players etc., satisfy most requirements of common home audio system use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eMultiple functions:\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cblockquote\u003e\n\u003cdiv\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\"\u003eP2 can be used as a tube preamp, connected between audio source and amplifier or active speaker to greatly improve the sound quality. Default 6K4 tubes, and can be directly replaced by 6J1\/6J4\/GE5654\/6AK5\/6*1n to enjoy HiFi sound of different styles.\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv id=\"pastingspan1\"\u003eP2 can be used as a headphone amplifier, convenient to listen to lossless music alone or at night. The RCA and 3.5mm headphone jack can output at the same time to meet more needs.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\"\u003eP2 can be used as a digital player with U-disk and TF card inputs, supporting MP3 and other lossless format such as APE, FLAC, WAV, WMA. No need for any driver, plug and play, convenient to enjoy fun even on the road or outdoors.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/blockquote\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHiFi clear sound with tone control and reasonable circuit layout: \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cblockquote\u003e\n\u003cdiv\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\"\u003eAdopting vacuum tubes design to filter out the digital sounds of common sound sources, making the sound warm and sweet, full and mellow, much softer and more listenable.\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\"\u003eUsing NE5532 op amp for tone control, treble\/mid\/bass can be adjusted separately, easy to adjust more delicate sounds of different styles. Pluggable op amp socket design, easy to change other op amps to enjoy different sounds.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/blockquote\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMini size and exquisite appearance, black aluminum case make it more fashionable and powerful. With power\/input mode indicators to clearly show the working status in real time, and full-function remote control makes the operation much easier, very suitable for home and desktop audio system use.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\u003cstrong\u003eWarm tips\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\n\u003cul\u003e\n\u003cli\u003eP2 is a tube preamp which needs to work with amplifiers or active speakers, cannot drive passive speakers or used with turntables directly. In RCA input mode, the previous \/ next song function is invalid.\u003c\/li\u003e\n\u003cli\u003eThe USB interface only supports U-disk and USB 2.0 thumbdrive, not support PC-USB. And the RCA and 3.5mm headphone jack can output at the same time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\"\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003eAudio input: Bluetooth\/Stereo RCA\/U-disk\/TF Card\u003c\/li\u003e\n\u003cli\u003eAudio output: Stereo RCA \/ 3.5mm headphone jack\u003c\/li\u003e\n\u003cli\u003eSupported formats of U-disk and TF Card: MP3 \/ WMA \/ APE \/ FLAC \/ WAV\u003c\/li\u003e\n\u003cli\u003eMax storage of U-disk: 32G\u003c\/li\u003e\n\u003cli\u003eMax storage of TF card: 32G\u003c\/li\u003e\n\u003cli\u003eTube model: 6K4*2\u003c\/li\u003e\n\u003cli\u003eFrequency Response: ±3dB (20Hz-20KHz)\u003c\/li\u003e\n\u003cli\u003eTreble\/Mid\/Bass range: ±6dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.775V\u003c\/li\u003e\n\u003cli\u003eTHD: 0.05%\u003c\/li\u003e\n\u003cli\u003eSNR: ≥98dB\u003c\/li\u003e\n\u003cli\u003eHeadphone Output Power: 100mW\/32Ω\u003c\/li\u003e\n\u003cli\u003eMatched headphone impedance: 16-64Ω\u003c\/li\u003e\n\u003cli\u003eWorking voltage: DC 12V\u003c\/li\u003e\n\u003cli\u003eDimensions(W*D*H): 115*128*33mm \/ 4.53*5.04*1.30in\u003c\/li\u003e\n\u003cli\u003eNet weight: 420g \/ 0.93lb\u003c\/li\u003e\n\u003cli\u003ePackage weight: 700g \/ 1.54lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\"\u003e\u003cstrong\u003ePacking List\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e1 x P2 Preamp\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e2 x 6K4 Tube\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e1 x DC12V Power Adaptor\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e1 x Remote Control (without batteries)\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e1 x Bluetootn Antenna\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1 x Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406946255080,"sku":"SUC-P2-US","price":73.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406946287848,"sku":"SUC-P2-UK","price":73.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406946320616,"sku":"SUC-P2-DE","price":73.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406946353384,"sku":"SUC-P2-AU","price":73.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406946386152,"sku":"SUC-P2","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/SUC-P2_3.jpg?v=1652165028"},{"product_id":"douk-audio-t4-plus-hifi-5654-tube-phono-preamp-for-turntable-stereo-preamp-headphone-amp-w-vu-meter","title":"Douk Audio T4 PLUS HiFi Vaccum Tube Phono Preamp for Turntable Stereo Preamp Headphone Amp w\/VU Meter","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003eUpgraded version [from 2022\/4\/18]: add a VU meter adjustment on the side panel, easily to adjust its sensitivity to match well with different input signals and achieve better visual effects of VU meter.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan\u003eT4 PLUS tube preamp meets more HiFi audio needs:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMM \/MC phono input, support multiple input impedance switch (1KΩ\/470Ω\/220Ω\/100Ω\/47Ω\/22Ω\/10Ω), converts phono signal to line level signal, low-noise integrated circuits and high-quality components to ensure clear sound.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e3.5mm AUX input, amplify the low level audio signal from your phone, tablet, PC, MP3 etc., easier to drive amplifier or active speaker and greatly improve the sound quality.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan\u003eUnique and amazing combination in the appearance: integrated T4 PLUS preamp with retro tubes and VU meter into a whole, the pointer dancing in the warm light with strong vintage feelings when enjoy HiFi music, dynamically decorates the audio system and give you a different acoustic enjoyment with large dynamic and sweet tube sound even in limited space.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan\u003eImported JAN5725 tubes and vintage warm sound: default comes with JAN5725 tubes, improves everything associated with your music such as detail, transparency, immediacy, richness, dynamic, tone etc., much better than 6J1 series especially in human voice. Pluggable tube socket for tube rolling and sound-shaping, easy to pick from and alter the sound signature to one's preference.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan\u003e3.5mm headphone output and perfect circuit design: T4 PLUS also with built-in classic headphone amp circuit (2*NE5532), easily to drive 32-300 ohm headphones. Reasonable and advanced architecture, TI TPS5430+7205MOS for power management, TL071+JRC2068 phono preamp circuit etc., enjoy HiFi analog sound and first-class design with an unbeatable low cost. \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eMini size and excellent performance: all designs full of details, such as solid aluminum alloy knob, gold-plated terminals, grey integrated moulding aluminum alloy shell decorates with built-in VU meter, looks vintage and elegant. Not only a MM\/MC phono preamp, but also a stereo audio preamp and headphone amplifier, especially designed for the audiophiles who pursue HiFi sound.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eWarm tips:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e1. 3.5mm AUX input with priority, please make sure the AUX cable has been pulled out if want to use MM\/MC phono input.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2. Stereo RCA and 3.5mm headphone jack can output at the same time, and the knob also controls the volume of two outputs simultaneously.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eModel: T4 PLUS\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAudio input: MM phono \/ turntable \/ 3.5mm AUX\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAudio output: stereo L\/R RCA \/ 3.5mm headphone jack\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMax output power of headphone jack: 150mW@32Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMatched headphone impedance: 32-300Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAUX IN\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAUX input level: 0.775V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRCA max output level: 1.5V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFrequency response: 20Hz-20KHz (±0.3dB)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eS\/N ratio: ≥110dB\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTHD: 0.2%\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePhono IN\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePhono input level: 0.005V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRCA max output level: 300mV (MM) \/ 3V (MC)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFrequency response: conforms to RIAA characteristics (±3dB)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eS\/N ratio: 71dB\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTHD: 0.8%\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eWorking voltage: DC 12V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDimensions(W*D*H): 50*137*146mm \/ 1.97*5.39*5.75in\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePackage dimensions(W*D*H): 300*230*65mm \/ 11.81*9.06*2.56in\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNet weight: 640g \/ 1.41lb\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 1000g \/ 2.20lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cstrong\u003ePacking List\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan\u003e1*T4 PLUS Preamp\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan\u003e2*JAN5725 Vacuum Tube\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan\u003e1*DC 12V Power Adapter\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1*3.5mm to RCA Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406622933224,"sku":"SUC-T4-PLUS-US","price":109.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406622965992,"sku":"SUC-T4-PLUS-UK","price":109.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406622998760,"sku":"SUC-T4-PLUS-DE","price":109.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406623031528,"sku":"SUC-T4-PLUS-AU","price":109.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406623064296,"sku":"SUC-T4-PLUS","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/2_032e22cc-29bc-49db-9e6d-8849d2b5e133.jpg?v=1744356561"},{"product_id":"douk-audio-t4-pro-mini-5654-vacuum-tube-phono-preamp-home-stereo-audio-pre-amplifier-headphone-amp","title":"Douk Audio T4 PRO Mini GE5654 Vacuum Tube Phono Preamp Home Stereo Audio Pre-Amplifier Headphone Amp","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003eIntroduction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan data-mce-fragment=\"1\"\u003eDouk Audio T4 PRO can be used as a MM phono preamp, a tube audio preamp and a headphone amplifier, powerful function in mini size, specially designed for various requirements of home\/desktop audio system.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eT4 PRO tube preamp meets more HiFi needs: \u003c\/span\u003eMM phono input, converts phono signal to line level signal, with low-nois integrated circuits and high-quality components to ensure clear and clean sound.3.5mm AUX input, amplify the low level audio signal from your phone, tablet, PC,MP3 etc., easier to drive amplifier or active speaker and greatly improve the sound quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eImported JAN5654 tubes and vintage warm sound: default comes with JAN5654 tubes, improves everything associated with your music such as detail, transparency, immediacy, richness, dynamic, tone etc., much better than 6J1 series especially in human voice. Pluggable tube socket for tube rolling and sound-shaping, easy to pick from and alter the sound signature to one's preference.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e3.5mm headphone output and perfect circuit design: T4PRO also with built-in classic headphone amp circuit(2*NE5532), easily to drive 32-300 ohm headphones. Reasonable and advanced architecture, TI TPS5430 for power management,  TL071+JRC2068 phono preamp circuit etc., enjoy HiFi analog sound and first-class design with an unbeatable low cost. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMini size and excellent performance: all designs full of details, solid aluminum knob, potentiometer for smooth multi-level gain adjustment, grey integrated moulding aluminum alloy shell decorates with special red tube cover and knob, looks vintage and elegant. Compact T4 PRO will give you a different acoustic enjoyment with large dynamic and sweet tube sound even in limited space.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWarm tips\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e3.5mm AUX input with priority, please make sure the AUX cable has been pulled out if want to use MM phono input.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eStereo RCA and 3.5mm headphone jack can output at the same time, and the knob also controls the volume of two outputs simultaneously.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eParameters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eBrand: Douk Audio\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eModel: T4 PRO\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eAudio input: MM phono\/turntable \/ 3.5mm AUX\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eAudio output: stereo L\/R RCA \/ 3.5mm headphone jack\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eOutput level: 1.5V (input 0.775V)\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eMax output power of headphone jack: 150mW@32Ω\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eMatched headphone impedance: 32-300Ω\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eInput sensitivity: 0.775V\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eFrequency response: 20Hz-20KHz(±3dB) (AUX IN)  \/ Standard RIAA (phono IN)\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eS\/N ratio: ≥105dB\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eTHD: 0.2%\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eDimensions(W*D*H): 95*117*30mm \/ 3.74*4.61*1.18in (exclude tubes)\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003ePackage dimensions(W*D*H): 255*215*65mm \/ 10.04*8.46*2.56in\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eNet weight: 330g \/ 0.73lb\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePackage weight: 600g \/ 1.32lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePacking List\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e1*T4 PRO Preamp\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e2*JAN5654 Vacuum Tube\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e1*DC 12V Power Adapter\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*3.5mm to RCA Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eComparision between Douk Audio T4 PRO and Other Similar Preamp\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable style=\"float: left;\" cellspacing=\"0\" border=\"1\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBrand\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eDouk Audio\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOthers\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e3.5mm headphone out\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e√ (32-300Ω)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e×\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eVacuum Tubes\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2*GE JAN5654\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2*6J2\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eControl knob\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSolid aluminium (ten times expensive)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePlastic\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGain adjustment\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSmooth potentiometer (multi-level)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOnly 4 levels (0, 39, 42, 45)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eS\/N ratio\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e≥105dB\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e≥\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e98\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003edB\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406627913960,"sku":"SUC-T4-PRO-US","price":64.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406627946728,"sku":"SUC-T4-PRO-UK","price":64.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406627979496,"sku":"SUC-T4-PRO-DE","price":64.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406628012264,"sku":"SUC-T4-PRO-AU","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406628045032,"sku":"SUC-T4-PRO","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/SUC-T4PRO_5.jpg?v=1650961781"},{"product_id":"douk-audio-u3-mini-class-a-headphone-amplifier-hifi-desktop-home-stereo-amp-dc5v","title":"Douk Audio U3 Mini Class A Headphone Amplifier HiFi Desktop Stereo Amp for HD650\/K701\/DT880\/T70\/RS1e","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eWarm tips:\u003c\/strong\u003e \u003cbr data-mce-fragment=\"1\"\u003eNot inlcude power adapter, recommend to use original high-quality power adapter above 5W. \u003cbr data-mce-fragment=\"1\"\u003eFor example: the current should be above 1A if use DC 5V while need above 0.5A if use DC 12V power adapter.\u003c\/span\u003e\u003c\/div\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAdopting innovative circuit design, DC 5-20V wide input working voltage, the amplifier circuit can always work at a high voltage of 26V, and the background noise index is excellent. With wide frequency response extension, excellent transient response, excellent purity and transparency, and good dynamic range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAdopting original TI-NE5532 classical op amp and transistor expanding current circuit, using 1300mA large current output transistor working in class A status, with ultra-low distortion, and the sound is warm and delicate, full and mellow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePluggable op amp socket design, convenient to upgrade different op amps and bring much DIY fun and playability for audiophiles. Smooth and mellow sound, suitable for listening to vocals or string music, classic or pop music, and even with unique charm when playing rock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMini size with exquisite appearance and most cost-effective, brings big surprise for all audiophiles, easily to drive most headphones in the market, providing larger power, better sound field and details, very suitable for home\/office desltop audio system use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWith stong drive power, easily to drive most high-impedance headphones such as:\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cblockquote data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHD580\/HD600\/HD650\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eK701\/K702\/Q701\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eDT880\/T70\/T90\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSR225\/SR325\/RS1e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/blockquote\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003eParameters:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAudio input: stereo L\/R RCA\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAudio output: 6.35mm headphone jack (with 6.35mm to 3.5mm adapter)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eOutput power: ≥1300mW (32Ω)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMatched headphone impedance: 18-600Ω\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFrequency response: 20-30KHz\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSignal to noise ratio: ≥110DB\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMax output amplitude voltage: 25V\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eInput voltage: DC 5-20V\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDimension(W*D*H): 67*93*30mm \/ 2.64*3.66*1.18in\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNet weight: 169g \/ 0.37lb\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePackage weight: 310g \/ 0.68lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"pastingspan1\" style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003ePacking List\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e1*U3 Headphone Amplifier\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*USB to DC Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*6.35mm to 3.5mm Headphone Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406714618088,"sku":"XZ-U3-US","price":36.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406714650856,"sku":"XZ-U3-UK","price":36.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406714683624,"sku":"XZ-U3-DE","price":36.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406714716392,"sku":"XZ-U3-AU","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406714749160,"sku":"XZ-U3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/XZ-U3-P_1.jpg?v=1650965746"},{"product_id":"douk-audio-u5-mini-fully-balanced-headphone-amplifier-for-xlr-4-4mm-headsets","title":"Douk Audio U5 Mini Fully Balanced Headphone Amplifier for XLR \/ 4.4mm Headsets","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e【Fully balanced headphone amplifier】Adopting fully balanced amplifier circuit and innovative circuit design, the amplifier circuit of U5 always works at a high voltage of 24V even if input DC 5V, with wide frequency response extension, excellent transient response, excellent purity and transparency, and good dynamic range.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e【Easily to drive low or high impedance headphones】For a total power output of up to 1400mW under a 32Ω load, U5 can easily power headphones with any low or high impedance (18-600Ω). Volume knob allows you to smoothly adjust volume without any undesirable noise nor any channel imbalances.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e【Pure analog design to reproduce music truly】Pure analog amplification circuit and analog control, show you the truest sound, all aspects are in the top-class such as sound field, sound position, details etc.. Adopt original JRC4580 classical op amp, pluggable socket design, convenient to upgrade different op amps to enjoy other sound styles.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e【Most cost-effective amp on the market】Mini size and exquisite appearance, and with low distortion, high power and a pure, uncolored sound, you’ll experience subtle details and shocking swings in your music effortlessly. U5, the best helper for all xlr\/4.4mm headphones to improve their sound quality.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cstrong\u003eWarm tips\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-mce-fragment=\"1\"\u003eWithout DC 5V power adapter, you can use your phone charger, input over 5V will result in damage.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eAudio input: stereo L\/R XLR ( 3-core, female)\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eAudio output: XLR ( 4-core, female) \/ 4.4mm \u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eOutput power: ≥1400mW (32Ω)\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eMatched headphone impedance: 18-600Ω\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eFrequency response: 20-30KHz\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eSignal to noise ratio: ≥110DB\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eTHD: 0.005%\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eInput voltage: DC 5V (recommend above 1A)\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eDimension(W*D*H): 68*69*28mm \/ 2.68*2.72*1.50in\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eNet weight: 149g \/ 0.33lb\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePackage weight: 500g \/ 1.10lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cstrong\u003ePacking List\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e1*U5 Headphone Amplifier\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*USB to DC Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406747975912,"sku":"XZ-U5-US","price":52.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406748008680,"sku":"XZ-U5-UK","price":52.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406748041448,"sku":"XZ-U5-DE","price":52.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406748074216,"sku":"XZ-U5-AU","price":52.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406748106984,"sku":"XZ-U5","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/XZ-U5-cadisi-Y_1.jpg?v=1668577222"},{"product_id":"ampapa-a1-mini-5654-vacuum-tube-preamp-phono-turntable-amplifier-w-tone-control","title":"Ampapa A1 Mini 5654 Vacuum Tube Preamp Phono\/Turntable Amplifier w\/Tone Control","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv align=\"center\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNobsound \/ Douk Audio is the only authorized distributor of Ampapa A1.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv align=\"center\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eIntroduction\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv align=\"center\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e \u003c\/div\u003e\n\u003cdiv align=\"center\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eA1 tube preamp \/ phono preamp \/ headphone amp is the first product carefully designed by Ampapa, with high-end configuration, powerful functions and amazing looking. Ampapa, always devoted to exploring the design innovation of HiFi and amplifying all passion for music.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eFeatures\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eAmpapa A1, more than one simple preamp:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMM input, converts phono signal to line level signal, with low-noise integrated circuits and high-quality components to ensure clear and clean sound.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eStereo RCA input, amplifies the low level audio signal from your phone, tablet, PC, MP3 etc., easier to drive amplifiers or active speakers and greatly improve the sound quality.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eJAN5654 tubes and HiFi vintage analog sound: reveal a sound that is both warm and fine, highlight great musicality, and improve everything associated with music such as detail, transparency, immediacy, richness, dynamic, tone etc.. Ceramic silver-plated pluggable tube socket for tube rolling and sound-shaping, easy to replace according to one's preference.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTone Control and 3.5mm headphone output: get more delicate and smooth sound by adjusting treble \/ bass knob, presenting music with rousing highs and deep lows and rejuvenating your audio system. Reasonable and advanced architecture, adds classic headphone amp circuit (2*NE5532), easily to drive 16-300 ohm headphones. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eExcellent performance and amazing design: all details full of texture, provide different acoustic enjoyment with large dynamic and sweet tube sound even in limited space. Using high-quality components, solid aluminum alloy knobs, unique appearance modeling decorates with warm orange \/ cool green lights etc., all is for the best listening experience. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eWarm tips:\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e1. A1 is designed with pluggable tube socket, compatible with 6J1, 6K4, 6J5, GE5654W, 6*1N, 6*2N, 6J5, 6A2, etc., can be replaced directly. \u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2. Stereo RCA output and 3.5mm headphone output can work at the same time, and the volume \/ treble \/ bass of two outputs are controlled simultaneously. \u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003eParameters\u003cbr\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Ampapa\u003c\/li\u003e\n\u003cli\u003eModel: A1\u003c\/li\u003e\n\u003cli\u003eAudio input: Phono MM \/ Stereo RCA\u003c\/li\u003e\n\u003cli\u003eAudio output: Stereo RCA \/ 3.5mm Headphone Jack\u003c\/li\u003e\n\u003cli\u003eInput level: 0.775V RMS (RCA) \/ 0.005V RMS (Phono)\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20Hz-20KHz (±0.5dB) (RCA) \/ Ref to RIAA +\/-2dB (Phono)\u003c\/li\u003e\n\u003cli\u003eHeadphone output power: 125mW (32Ω)\/62.5mW(64Ω)\/30mW(128Ω)\u003c\/li\u003e\n\u003cli\u003eHeadphone impedance range: 16-300Ω\u003c\/li\u003e\n\u003cli\u003eTHD: ≤0.1%\u003c\/li\u003e\n\u003cli\u003eOutput level: 1.5V RMS (RCA) \/ 0.6V RMS (Phono)\u003c\/li\u003e\n\u003cli\u003eS\/N ratio: ≥106dB (RCA) \/ ≥80dB(Phono)\u003c\/li\u003e\n\u003cli\u003eWorking voltage: DC 12V(≥1.5A)\u003c\/li\u003e\n\u003cli\u003ePackage weight: 900g \/ 1.98lb\u003c\/li\u003e\n\u003cli\u003ePackage dimensions (W*D*H): 260*145*78mm \/ 10.24*5.71*3.07in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePacking List\u003c\/span\u003e\u003c\/div\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*A1 Preamp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2*5654 Vacuum Tube\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*DC 12V Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*RCA Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*Wiping Cloth\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*Warranty\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47406558281960,"sku":"SUC-A1-US","price":129.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406558314728,"sku":"SUC-A1-UK","price":129.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406558347496,"sku":"SUC-A1-DE","price":129.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406558380264,"sku":"SUC-A1-AU","price":129.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406558413032,"sku":"SUC-A1","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/SUC-A1-2022_4.jpg?v=1663234890"},{"product_id":"douk-audio-q4-mini-bluetooth-5-0-stereo-usb-dac-gaming-s-pdif-digital-to-analog-converter-192k","title":"Nobsound Q4 Mini Bluetooth 5.0 Stereo USB DAC Gaming S\/PDIF Digital to Analog Converter 192K","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe latest version upgraded in Nov. 2022, make big progress in its components, wiring and circuit to greatly improve the sound with lower distortion and higher S\/N ratio (up to 113dB).\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFeatures\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe latest Q4 Bluetooth receiver \u0026amp; D\/A converter: with Bluetooth \/ PC-USB \/ U-disk \/ Optical and Coaxial S\/PDIF inputs can match perfectly with most home audio system; transmits stream bit-perfect 24Bit\/192KHz HD low jitter signal, with output protect circuit, safe for your expensive audio system.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePC-USB \/ U-disk inputs and dual analog outputs: besides PC-USB (support phone OTG), also with U-disk input to play lossless audio format, easy to set-up, no need for any driver or software, truly plug-and-play. RCA output can be connected to amplifier or powered speakers, and headphone amp circuit is added to drive most 16-300Ω headphones.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHiFi clear sound with tone control: adopts high-end chip combination to get high-quality sound with higher S\/N ratio and lower distortion (0.005%). Also with treble and bass knobs, can be used as preamp to adjust one's own preferable sound styles, presents HiFi music with rousing highs and deep lows.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePractical funtions to simplify use: with full-function remote control, all settings can be achieved from the distance; with coding input selection button and independent input indicators, clearly to show the working status in real time; aluminum alloy case with unique mirror design looks very cool, both provide HiFi music and decorate your desktop audio space.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eComparision between Nobsound Q4 and Other Similar DAC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ctable border=\"1\" data-mce-fragment=\"1\" style=\"float: left;\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNobsound\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOthers\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBluetooth input\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e√\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e×\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eU-disk input\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e√\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e×\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eRemote control\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e√\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e×\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIndependent input indicator\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e√\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e× \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eInput switch\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAdvanced coding knob: no noise \/ longer life\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTraditional toggle switch\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMaterial\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFully metal case with unique mirror design\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCommon metal case\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e \u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eWarm tips:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1. U-disk input is prior to Bluetooth input, if you want Bluetooth input please make sure the U-disk is plugged out.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2. Bluetooh of Q4 can only be searched and connected when input channel is switched to Bluetooth input mode.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e3. PC-USB input also supports mobile phones that with OTG functions, but Android system needs OTG cable and IOS system needs camera kit, please prepare by yourself.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eParameters\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eAudio input: Bluetooth 5.0\/USB\/Coaxial\/Fiber Optical\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eAudio output: stereo L\/R RCA \/ 3.5mm headphone jack\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eInput sampling rate supported:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003ePC-USB: 96K\/24Bit\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFiber\/Coaxial: 192K\/24Bit\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eU-disk supported formats: MP3\/WMA\/APE\/WAV\/FLAC\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eU-disk max capacity: 64G\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eTreble \u0026amp; bass range: ±6dB\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eFrequency response: 20Hz-20KHz (±0.5dB)\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003ePC-USB support operating system: XP\/W7\/W8\/W10\/MAC\/linux\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eDistortion: 0.0057%\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eSNR: ≥ 113dB\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eAmp output max power: 110mW @32Ω\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eHeadphone matched impedance: 16-300Ω\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eRCA output level: 1.9V\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eWorking voltage: DC 5V (type-C)\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eDimensions(W*D*H): 95*78*32mm \/ 3.74*3.07*1.26in\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eNet weight: 235g \/ 0.52lb\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePackage weight: 500g \/ 1.10lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePacking List\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e1 × Q4 DAC\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e1 × Remote Control (without 2*AAA batteries)\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e1 × USB Power Cable\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e1 × USB Data Cable\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1 × Optical Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e1 × Bluetooth Antenna\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1 × User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47406970044648,"sku":"SUC-Q4-US","price":49.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406970077416,"sku":"SUC-Q4-UK","price":49.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406970110184,"sku":"SUC-Q4-DE","price":49.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406970142952,"sku":"SUC-Q4-AU","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406970175720,"sku":"SUC-Q4","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/SUC-Q4.jpg?v=1667525420"},{"product_id":"douk-audio-u10-mini-tube-headphone-amplifier-hifi-stereo-preamp-for-home-speaker","title":"Douk Audio U10 Mini Tube Headphone Amplifier HIFI Stereo Preamp for Home Speaker","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eU10 headphone amplifier with strong power:  stereo 3.5mm AUX and RCA inputs, compatible with most audio source such as MP3, phones, computers, CD players etc.. Dual headphone jacks (3.5\/6.35mm) output up to 1100mW, easily to drive all 18-600Ω headphones; U10 also can be used as a preamp to improve the sound quality for amplifiers or active speakers.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eAdvanced design and HIFI sound: innovative built-in voltage boost circuit, U10 always works at a high voltage of 24V even only powered by DC 5V, the sound with deadly quiet background, amazing purity and transparency, accurate position and wide sound field, easy use and unrivalled sound are both achieved at the same time.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003ePluggable design with higher playability: 2PCS 6A2 tubes are adopted to soften and warm the audio, sounds real and natural, full and mellow, delicate and sweet. Both tubes and op amps are designed with pluggable socket, convenient for tube rolling, op amp upgrading and sound-shaping, different styles of sound can be enjoyed easily.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eExcellent manufacturing and most cost-effective: all metal case with good shielding, pure ceramic tube socket with antioxidant contact etc., U10 provides excellent sound and strong power for your headphones in such a mini size, specially suitable for the audiophiles who love listening to vocals, string music, light or classic music etc..\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003eWarm tips:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e1. Not inlcude power adapter, recommend to use original high-quality power adapter (DC5V\/≥2A ). U10 won't work normally if the current below 2A.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e2. Inputs (3.5mm \/ RCA) and outputs (6.35mm\/3.5mm jack) are connected in parallel, in other words, all inputs and outputs work simultaneously. Don't connect 3.5mm and RCA inputs at the same time, or else audio signals will be mixed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e3. Pluggable tube socket design, 6A2 can be replaced by the following models:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e6J1、6ж1П、6AK5、6BC5、403A\/B、5654、EF40、EF95、CV850、6J2、6ж2П、6AS6、CV2522、EF11\/732、CV4011、6J3、6ж3П、EF96、CV848、6BC6、6AG5、 6J4、6ж4、6136、6BX6、6AC7、EF94、6AU6、6K4、6K5、6K4П、6BA6、6DA6、EF89\/93、5749\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e4. U10 can easily drive all headphones even with high-impedance such as HD580\/HD600\/HD650 \/ K701\/K702\/Q701 \/ DT880\/T70\/T90 \/ SR225\/SR325\/RS1e etc.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003eParameters:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eModel: U10\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAudio input: 3.5mm AUX \/ Stereo RCA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAudio output: 3.5mm \/ 6.35mm headphone jack\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTube Model: 6A2 (2PCS)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOp amp model: NE5532 (2PCS)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFrequency response: 20Hz-30KHz\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eOutput power: ≥1100mW (32Ω)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMatched headphone impedance: 18-600Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSignal to noise ratio: ≥110DB\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eInput voltage: DC 5V (≥2A)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eWorking voltage inside: DC 24V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNet weight: 200g \/ 0.44lb\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePackage weight: 300g \/ 0.66lb\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDimensions (W*D*H): 69*95*30mm \/ 2.72*3.74*1.18in (not including tubes)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage Dimensions (W*D*H): 132*85*90mm \/ 5.20*3.35*3.54in\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003ePacking List\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan\u003e1 × U10 Headphone Amplifier\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan\u003e2 × 6A2 Tube\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan\u003e1 × Acrylic Board\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1 × USB to DC Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1 × User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406711111912,"sku":"XZ-U10-US","price":49.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406711144680,"sku":"XZ-U10-UK","price":49.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406711177448,"sku":"XZ-U10-DE","price":49.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406711210216,"sku":"XZ-U10-AU","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406711242984,"sku":"XZ-U10","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/1_3341d812-e0b5-4f00-b4cd-18d84d69cb2d.jpg?v=1679712496"},{"product_id":"douk-audio-t13-phono-preamp-for-mm-turntables-stereo-desktop-headphone-amplifier-w-vu-meter","title":"Douk Audio T13 Phono Preamp for MM Turntables Stereo Desktop Headphone Amplifier w\/VU Meter","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eWarm Tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e1. Without DC 5V power adapter, please prepare it by yourself.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e2. Headphone output with priority, please make sure the headphone has been disconnected if want RCA output.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e3. VU meter displays the level of input source, and adjusting the volume of T13 will not change the VU swing range.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eT13 is a preamp with Stereo RCA and Phono(MM) inputs, compatible with most audio devices such as turntables, phones, computers, CD players, etc. to satisfy different demands. Stereo RCA output greatly improves the sound quality for amplifiers or active speakers, adds a 3.5mm headphone jack to easily drive all 16-300Ω headphones.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eCustomized full-color VU meters, the color and brightness of backlight can be adjusted steplessly and freely; with built-in professional VU meter driver chip makes the pointer dancing more accurately, dynamically decorates the audio system and brings different enjoyment even in limited space.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eBetter display and clean sound: AGC algorithm achieves ideal visual effects and avoids no display when input low signal and displays in full screen when input high; adds built-in 100K high-impedance input and power isolation circuits, no common ground noise even sharing the power with audio players, ensure the purity of sound source.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eExquisite appearance and easy use: all aluminum CNC machined panel and gold-plated RCA terminals with longer service life, and durable adjustment knobs; powered by USB 5V, can be powered by power bank, phone charger, computer etc.,very suitable for home\/office desktop audio system use to get better listening pleasure.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eAudio input: Stereo RCA \/ Phono MM\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio output: Stereo RCA \/ 3.5mm Headphone jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInput level: \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"padding-left: 30px; text-align: left;\"\u003e\u003cspan\u003eRCA: 0.775V RMS\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding-left: 30px; text-align: left;\"\u003e\u003cspan\u003ePhono: 0.005V RMS\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"padding-left: 30px; text-align: left;\"\u003e\n\u003cspan\u003eRCA: 20Hz-20KHz (±0.5dB) \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePhono: Ref to RIAA ±2dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eOutput level: \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"padding-left: 30px; text-align: left;\"\u003e\n\u003cspan\u003eRCA: 1.5V RMS\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePhono: 0.6V RMS\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eS\/N ratio: \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eRCA: ≥106dB\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePhono: ≥80dB\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHeadphone output power:\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"padding-left: 30px; text-align: left;\"\u003e\n\u003cspan\u003e 250mW @32Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e100mW @64Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e60mW @128Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eHeadphone impedance range: 16-300Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTHD: ≤0.1%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVU meter color: multi-color for choice\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBacklight level adjustable: Support\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSave set-up: Support\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWorking voltage: DC 5V(≥0.6A)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions(W*D*): 178*118*55mm \/ 7*4.65*2.17in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePackage dimensions(W*D*H): 235*180*90mm \/ 9.25*7.09*3.54in\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet weight: 730g\/1.61lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 1000g\/2.20lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003ePacking List\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1×T13 Preamp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1×USB Cable (Type-C)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1×Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406973583592,"sku":"XX-T13-US","price":99.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406973616360,"sku":"XX-T13-UK","price":99.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406973649128,"sku":"XX-T13-DE","price":99.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406973681896,"sku":"XX-T13-AU","price":99.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406973714664,"sku":"XX-T13","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/XX-T13_4.jpg?v=1685936771"},{"product_id":"douk-audio-t14-eq-mini-mm-mc-phono-stage-riaa-preamp-for-lp-vinyl-turntables-with-headphone-out","title":"Douk Audio T14-EQ Mini MM\/MC Phono Stage RIAA Preamp for LP Vinyl Turntables with Headphone Out","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eWarm Tips\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1. 3.5mm headphone output with priority, please make sure the headphone cable has been pulled out if want to use stereo RCA output.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2. Without a DC5V power adapter, please prepare it by yourself.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFeatures\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMM\/MC phono preamp: converts phono signal to line level signal, low-noise integrated circuits and high-quality components are designed to ensure clear sound; with a MM\/MC switch on the bottom, easy to select to match different kinds of turntables.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eLINE and 3.5mm headphone outputs: with stereo RCA output to connect amplifiers or active speakers, greatly improve their sound quality; also add a 3.5mm headphone jack to drive all 16-200Ω headphones, convenient to enjoy music from record players alone or at night.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHIFI sound and tone control: with independent treble and bass control within -5dB to +5dB range, easy to adjust different sound styles to personal perference.With built-in power isolation circuit, no common ground noise will be generated even sharing the same power with audio players.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMini size and easy to use: compact design, all-aluminum shell and gold-plated PCB and RCA terminals can maximally isolate external interference signals to ensure lossless transmission; USB 5V input voltage, also can be powered by computer or power bank, convenient to use anywhere in your house.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eParameters\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAudio input: MM\/MC phono\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAudio output: Stereo RCA \/ 3.5mm Headphone Jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eInput level:\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left; padding-left: 30px;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMM: 0.005V RMS  \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left; padding-left: 30px;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMC: 0.0005V RMS \u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFrequency response: conforms to RIAA characteristics(±0.5dB) \u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTreble \/ bass range: ±5dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHeadphone output power:\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left; padding-left: 30px;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e250mW @32Ω\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left; padding-left: 30px;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e100mW @64Ω\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left; padding-left: 30px;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e60mW @128Ω\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHeadphone impedance range: 16-200Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTHD: ≤0.1%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOutput level: 0.6V RMS\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eS\/N ratio: ≥80dB(Phono)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eWorking voltage: DC 5V(≥0.6A)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eDimensions(W*D*H): 84*84*28mm \/ 3.31*3.31*1.10in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePackage dimensions(W*D*H): 133*92*50mm \/ 5.24*3.62*1.97in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNet weight: 176g \/ 0.39lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePackage weight: 400g \/ 0.88lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePacking List\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1×T14-EQ Preamp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1×USB Cable(Type-C)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406673330408,"sku":"XX-T14-EQ-US","price":49.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406673363176,"sku":"XX-T14-EQ-UK","price":49.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406673395944,"sku":"XX-T14-EQ-DE","price":49.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406673428712,"sku":"XX-T14-EQ-AU","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406673461480,"sku":"XX-T14-EQ","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/XX-T14-EQ_6.jpg?v=1688016895"},{"product_id":"douk-audio-t9-hifi-magic-6e2-vacuum-tube-stereo-preamp-mm-mc-phono-stage-for-turntable-amp","title":"Douk Audio T9 6E2 Vacuum Tube Preamp MM\/MC Phono","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eWarm Tips\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1. The bias and gain of two 6E2 tubes are set well before shipping, please pay attention to the R\/L channel markings on the tubes, don't insert them wrongly during installation.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2. 3.5mm headphone jack with priority, please make sure the headphone has been disconnected if you want RCA output.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e3. Pluggable tube socket design, 6A2 is convenient to be replaced by 6K4, EF93, 6BA6, W727 etc. to enjoy tube sound of different styles.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e4. T9 is a preamp not a power amplifier, needed to work with amplifiers or active speakers.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFeatures\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eVintage vacuum tubes to provide double enjoyments: add magic eye 6E2 tubes to show the signal level dynamically, the color is pure with high brightness, also with switchable cold green and warm orange backlights, wonderful visual feast can be attained; default 6A2 tubes to improves everything associated with music, sounds warm and natural, full and mellow, amazing auditory carnival for your ears.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eT9 tube preamp with Phono and RCA inputs:\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePhono input, support both MM \/MC cartridges with one button to switch, convert phono signal to line level signal, low-noise integrated circuits and high-quality components to ensure clear sound.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eStereo L\/R RCA input, amplify the low level audio signal from your phone, tablet, PC, MP3 etc., easier to drive amplifiers or active speakers and greatly improve their sound quality.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e3.5mm headphone output and tone control: besides stereo RCA output also with independent 3.5 mm headphone amp circuit, easily to drive all 16-300Ω headphones. More delicate and smooth sound with rousing highs and deep lows can be enjoyed by adjusting the treble \/ bass knob, rejuvenating your audio system.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAttractive looking and powerful design: all metal case and CNC aluminum panel with good shielding performance to avoid external interference. Solid and durable knurled knob, all I\/O interfaces are gold-plated to ensure the tight and smooth transmission of the original audio signal to minimize the loss of the signal.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eHow to Adjust the Bias and Gain of the 6E2 Tubes?\u003cbr\u003e1. Power on T9 and do not input any source signal;\u003cbr\u003e2. Adjust the BIAS to display the green light of the 6E2 tube at the bottom;\u003cbr\u003e3. Then input the audio signal, and adjust the GAIN to display the 6E2 in the appropriate position and balance left and right.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eParameters\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio input: Stereo RCA \/ Phono MM(MC)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio output: Stereo RCA \/ 3.5mm Headphone Jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eHeadphone impedance range: 16-300Ω\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eHeadphone output power:\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e250mW@32Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e100mW@64Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e60mW@128Ω\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eRCA IN: \u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eInput level: 0.775V RMS\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eOutput level: 1.5V RMS\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eInput impedance: 100K ohm\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eSNR: ≥106dB \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFrequency response: 20Hz-20KHz (±0.5dB) \u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePHONO IN:\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eInput level: 0.005V RMS (MM) \/ 0.0005V RMS (MC)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eOutput level: 0.6V RMS\u003c\/span\u003e \u003cbr\u003e\u003cspan style=\"font-family: times new roman, times;\"\u003e\u003cspan style=\"font-size: 18.6667px;\"\u003eInput impedance: \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e47K ohm \u003c\/span\u003e(MM) \/ 330ohm (MC)\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: times new roman, times;\"\u003e\u003cspan style=\"font-size: 18.6667px;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eSNR: ≥80dB\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: times new roman, times;\"\u003e\u003cspan style=\"font-size: 18.6667px;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFrequency response: Ref to RIAA ±2dB \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTHD: ≤0.1%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTube: 2×6E2; 2×6A2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTreble\u0026amp;Bass: ±10dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eBacklight Color adjustable: GREEN\/ORANGE\/OFF\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eWorking voltage: DC 12V(≥1A)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDimensions (W*D*H): 154*87*47mm \/ 6.06*3.43*1.85in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage dimensions(W*D*H): 210*190*100mm \/ 8.27*7.48*3.94in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eNet weight: 600g\/1.32lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage weight: 1.0kg\/2.20lb\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePacking List\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*T9 Preamp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2*6E2 Tube\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2*6A2 Tube\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*DC12V Power Supply\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406688403688,"sku":"XX-T9-US","price":134.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406688436456,"sku":"XX-T9-UK","price":134.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406688469224,"sku":"XX-T9-DE","price":134.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406688501992,"sku":"XX-T9-AU","price":134.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406688534760,"sku":"XX-T9","price":134.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/XX-T9_1.jpg?v=1781684472"},{"product_id":"douk-audio-u3-pro-hifi-mini-headphone-amplifier-class-a-desktop-amp-for-headsets-dc5v","title":"Douk Audio U3 PRO HiFi Mini Headphone Amplifier Class A Desktop Amp for Headsets DC5V","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eEnhanced Compatibility: with 3.5mm AUX\/stereo RCA input and 3.5mm\/6.35mm headphone jack output, the U3 PRO is compatible with a wide range of audio sources, including MP3 players, iPods, smartphones, tablets, computers, and CD players etc. Its output can connect to various headphones, offering a versatile listening experience with support for most headphone models.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eBuilt-in Voltage Boost Circuit: adopting innovative circuit design with built-in voltage boost circuit, the amplifier circuit can always work at a high voltage of ±14V even only powered by DC 5V, and the background noise index is excellent. With wide frequency response extension, excellent transient response, excellent purity and transparency, and good dynamic range.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eExceptional Output Power: for a total power output of up to 1500mW under a 32Ω load, U3 PRO can easily power headphones with any low or high impedance (18-600Ω). Working in class A status, with ultra-low distortion, the sound is warm and delicate, full and mellow with outstanding sound quality. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eClassic OP+BUF Architecture: U3 PRO adopts OP42 and BUF634, featuring a pure DC amplification circuit. Pluggable op amp socket design, OP42 can be replaced by OP17, AD797, AD843, AD847, and OPA627, convenient to upgrade different op amps and bring much DIY fun and playability for audiophiles. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eHighly Cost-Effective: mini size with exquisite appearance, brings big surprise for all audiophiles, easily to drive most headphones in the market, providing larger power, better sound field and details, very suitable for home\/office desktop audio system use.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv style=\"line-height: 1.5;\"\u003eWarm tips:\u003cbr\u003e1. Without DC 5V power adapter, please prepare an original high-quality power adapter yourself (DC 5V ≥1A). Note: the input voltage over 5V will result in damage.\u003c\/div\u003e\n\u003cdiv style=\"line-height: 1.5;\"\u003e2. The U3 PRO won't work well if the current of power adapter is below 1A.\u003c\/div\u003e\n\u003cdiv style=\"line-height: 1.4;\"\u003e\u003cspan style=\"font-family: 'Times New Roman';\"\u003e3. The 3.5mm and 6.35mm headphone jack can output at the same time. Please don't use RCA and AUX input at the same time, otherwise audio mixing will be caused.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eParameters:\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio input: stereo L\/R RCA, 3.5mm AUX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio output: 3.5mm\/6.35mm headphone jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eOutput power: ≥1500mW (32Ω)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMatched headphone impedance: 18-600Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMax output amplitude voltage: ±14V\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFrequency response: 20-30KHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eSNR: ≥110DB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eInput voltage: DC 5V(≥1A)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDimension(W*D*H): 68*92*32mm\/ 2.68*3.62*1.26in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eNet weight: 164g \/ 0.36lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage weight: 300g \/ 0.66lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003ePacking List\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"line-height: 1.5; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*U3 PRO Headphone Amplifier\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*USB to DC Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!----\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406971617512,"sku":"XZ-U3-PRO-US","price":54.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406971650280,"sku":"XZ-U3-PRO-UK","price":54.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406971683048,"sku":"XZ-U3-PRO-DE","price":54.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406971715816,"sku":"XZ-U3-PRO-AU","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406971748584,"sku":"XZ-U3-PRO","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_2a4af575-efe7-4f44-b4ca-18910257f18e.jpg?v=1722241027"},{"product_id":"douk-audio-u5pro-hifi-fully-balanced-headphone-amplifier-mini-stereo-amp-for-xlr-4-4mm-headsets","title":"Douk Audio U5PRO HiFi Fully Balanced Headphone Amplifier Mini Stereo Amp for XLR\/4.4mm Headsets","description":"\u003cdiv\u003e\n\u003cdiv style=\"line-height: 1.5; text-align: left;\"\u003eWarm tips:\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"line-height: 1.5; text-align: left;\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e1. There is a possibility that the U5Pro won't work normally if the single-ended or false balanced signal (use 3.5mm to XLR cable or switcher)  inputs directly.\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e2. Please add the Douk Audio U1 single-ended to balanced adapter between the audio source and the U5pro if the audio source signal is single-ended.\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e3. Please make sure the headphones connected is balanced whose interface definition is L+\/L- R+\/R-\/(GND).\u003cbr\u003e4. Without DC 5V power adapter. Recommend using a USB phone charger of DC 5V(≥1A). Input over 5V will result in damage and U5 PRO won't work normally if the current is below 1A.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFeatures\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e【Fully balanced headphone amplifier】Adopting fully balanced amplifier circuit and innovative circuit design with built-in voltage booster circuit, the amplifier circuit of U5 PRO always works at a high voltage of ±14V even if input DC 5V, with wide frequency response extension, excellent transient response, excellent purity and transparency, and good dynamic range.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e【Easily to drive low or high impedance headphones】For a total power output of up to 1500mW under a 32Ω load, U5 PRO can easily power headphones with any low or high impedance (18-600Ω). Volume knob allows you to smoothly adjust volume without any undesirable noise nor any channel imbalances.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e【Classic OP+BUF architecture】U5 PRO adopts OP42 and BUF634, classic OP+BUF architecture, and pure DC amplification circuit, ensuring every note is rendered with outstanding clarity and purity. Designed with four independent paths, it delivers exceptional sound quality, making it an ideal choice for audiophiles.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e【Pure analog design and pluggable op amp】Pure analog amplification circuit and analog control, show you the truest sound, all aspects are in the top-class such as sound field, sound position, details etc. Pluggable op amp socket design, OP42 can be replaced by OP17, AD797, AD843, AD847, and OPA627, convenient to upgrade different op amps to enjoy other sound styles.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e【Most cost-effective amp on the market】Mini size and exquisite appearance, and with low distortion, high power and a pure, uncolored sound, you'll experience subtle details and shocking swings in your music effortlessly. U5 PRO, the best helper for all XLR\/4.4mm headphones to improve their sound quality.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"line-height: 1.5; text-align: left;\"\u003e\n\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eParameters:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio input: stereo L\/R XLR (3-core, female)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio output: XLR (4-core, female)\/4.4mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eOutput power: ≥1500mW(32Ω)\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMatched headphone impedance: 18-600Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMax output amplitude voltage: ±14V \u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFrequency response: 20-30KHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eSNR: ≥110DB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTHD: 0.005%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eInput voltage: DC 5V (≥1A)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDimension(W*D*H): 70*82*38mm\/2.76*3.23*1.50in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eNet weight:172g\/0.38lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 1.5;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage weight: 300g\/0.66lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePacking List\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*U5 PRO Headphone Amplifier\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*USB to DC Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406762361064,"sku":"XZ-U5-PRO-US","price":79.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406762393832,"sku":"XZ-U5-PRO-UK","price":79.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406762426600,"sku":"XZ-U5-PRO-DE","price":79.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406762459368,"sku":"XZ-U5-PRO-AU","price":79.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406762492136,"sku":"XZ-U5-PRO","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/10_c0d4a06b-a56e-4ae5-a634-7eb006436981.jpg?v=1722241452"},{"product_id":"douk-audio-k5-usb-dac-headphone-amplifier-opt-digital-to-analog-converter-dsd256","title":"Douk Audio K5 USB DAC Headphone Amplifier OPT Digital to Analog Converter DSD256","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDouk Audio K5 USB DAC \u0026amp; Headphone Amp: Featuring USB and SPDIF optical inputs, as well as optical, RCA and 6.35\/3.5mm jack outputs, the K5 serves as a high-performance headphone amplifier, a USB DAC, a preamp, but also a USB to optical converter to transmit the high-quality audio from the computer to those audio devices only with SPDIF digital input such as CD players, amplifiers and active speakers etc.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eHigh-end Chipset and Top-level Parameters: The K5 adopts ESS9038Q2M (DAC), SA9312 (DSP), OPA1678 (LPF) and SGM8262 (amp) op-amps, and supports PCM 32bit\/384kHz high-resolution decoding and DSD256 playback. Its excellent circuit design ensures superior performance with a SNR over 121dB, a low noise floor of only 3μV and an incredibly low THD of 0.0007%, K5 delivers an exceptional listening pleasure with its ultra-pure sound.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eStrong Power and High\/Low Gain Modes: K5 supports dual 6.35\/3.5mm headphone outputs and provides robust power of 560mW\/470mW@32Ω per channel to effortlessly unleash the best performance of your headphones. Specially designed with high and low gain modes, flexibly adapt to all headphones of a wide impedance range from 16Ω to 600Ω and tailor your own listening experience.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTone Control with Bypass and Gain Switch: Treble and bass with midpoint positioning for perfect balance, the K5 also features a bypass function to remove all tone controls, allowing you to enjoy the purest sound by toggling the switch to PURE. The USB Type-C input can power the K5 directly with sufficient current, it also has an external power port and includes a 2-in-1 USB cable (Type-C and USB-A) for broader compatibility and optimal performance.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eUser-Friendly Design for Easy Operation: Besides input, tone and gain one-click switch , the K5 also integrated the volume and power button into one to simplify the use; with colorful LED indicators, clearly show the current working mode and sampling rate; aluminum alloy body and CNC-molded, compact but durable and reliable, very suitable for those who pursue HIFI sound.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eWarm Tips:\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1. The K5 USB DAC is not compatible with Win7 system.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2.The USB input (type-C) can transmit audio signals and provide power to the K5. If the current is above 2A, there is no need to use the external DC power interface. If less than 2A, please use the supplied high-quality DC5V\/2A power adapter to ensure the performance of the K5.\u003cbr\u003e3. The volume and tone knobs only control the analog audio outputs (RCA\/6.35 \/ 3.5mm jacks), invalid for the optical output.\u003cbr\u003e4. The optical output is only valid when using the USB input. While the analog outputs of RCA, 6.35 and 3.5mm jacks will work no matter using the USB or Optical input.\u003cbr\u003e5. For DSD playback, no USB driver is required if the computer is running MAC OS, linux or Android systems. While for Windows system, please contact us for the USB driver or download directty from the user manual.\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eParameters\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eBrand: Douk Audio\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eModel: K5\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio input: USB\/Fiber Optical\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio output: Optical\/Stereo RCA\/6.35mm  \u0026amp; 3.5mm headphone jack\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eChipsets: ESS9038Q2M+SA9312\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFormat and sampling rate supported:\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eUSB: PCM44.1-384K\/16-32bit, DSD64-256\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eSPDIF: PCM 44.1-192K\/16-24bit, DSD64 (DOP)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFrequency response: 20-40kHz(±0.3dB)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTreble adjustment: 3K-20KHz \/ ±10dB\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eBass adjustment: 20-250Hz \/ ±10dB\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePure mode: support (Tone control not valid)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMatched headphone impedance: 16-600Ω \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eRCA Output\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eOutput level: 2Vrms\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003cbr\u003eTHD+N: \u0026lt;0.0007%\u003cbr\u003eSNR: \u0026gt;120dB\u003cbr\u003eChannel Separation: \u0026lt;-80dB\u003cbr\u003eNoise floor: \u0026lt;3μV (1KHz@300ohm)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eHeadphone output \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eGAIN Mode: High (0dB) \/ Low (-6dB)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eOutput power in High Gain Mode (THD+N\u0026lt;1%): \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e560mW @32Ω (6.35mm jack output)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e370mW @32Ω (3.5mm jack output)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePeak volltage:\u003cbr\u003e4.25Vrms@32ohm (6.35mm Jack output)\u003cbr\u003e3.45Vrms@32ohm (3.5mm jack output)                    \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTHD+N: \u0026lt;0.0008% @32Ω   \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eSNR: \u0026gt;121dB @32Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eChannel Separation: \u0026lt;-65dB @32Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eNoise floor: \u0026lt;3μV\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eWorking voltage: DC 5V (≥2A)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePower interface: USB (type-c) \/ DC 5.5*2.1mm\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDimensions(W*D*H): 95*92*50mm \/ 3.74*3.62*1.97in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage dimensinos(W'D*H): 225*145*80mm\/ 8.86*5.71*3.15in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eNet weight: 228g\/0.50lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage weight: 500\/1.10lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePacking List\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*K5\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*Power Adapter\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*USB Cable\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*Optical Cable\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47396587634920,"sku":"DZ103-US","price":79.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47396587667688,"sku":"DZ103-UK","price":79.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47396587700456,"sku":"DZ103-DE","price":79.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47396587733224,"sku":"DZ103-AU","price":79.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47396587765992,"sku":"DZ103","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/0_28f8bb54-6c83-47d7-ac65-5199570bb879.jpg?v=1734050707"},{"product_id":"douk-audio-p1plus-bluetooth-tube-preamp-usb-dac-headphone-amp-w-vu-meter-dsd256","title":"Douk Audio P1 PLUS Bluetooth Tube Preamp USB DAC Headphone Amp w\/VU Meter DSD256","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePerfect Blend of Vintage and Modern: The P1PLUS boldly reimagines the appearance of HIFI audio equipment. It integrates customized pluggable VU meters, retro military-grade vacuum tubes and a crystal-clear OLED screen. Not only add warmth to the sound but also vividly show the dynamic changes in the audio signal. Allowing you immerse yourself in a vibrant audio-visual feast as you delve into the HiFi world.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eLuxurious Chipset Unleashes Peak Performance: QCC5125 Bluetooth chip supports APTX-HD and LDAC, achieving the highest 24Bit\/96Khz transmission. The SA9137L USB chip and ESS9018K2M DAC chip handle PCM data up to 384KHz\/32Bit and DSD256. The TPA6120 amp chip effortlessly powers headphones ranging from 16Ω to 600Ω. Besides OPA1656, 2PCS pluggable NE5532 op amps allow you to tailor your sound by swapping with various dual op-amps.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAuthentic tube amplification and sound: the P1PLUS preamp circuit elevates the voltage to 100V, ensuring that the vacuum tubes operate at their full potential and delivering a warm and rich experience. The unique technology faithfully reproduces crisp high tones, lush midrange richness, and deep, rhythmic bass. Pluggable socket design allows for tube rolling and sound-shaping to customize your own sound.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eVersatile audio inputs and outputs: the P1PLUS provides Bluetooth\/ USB\/ coaxial\/ optical\/ stereo RCA\/ 3.5mm AUX inputs, and optical\/ stereo RCA\/ 3.5mm AUX\/ 3.5mm headphone jack outputs, perfect for fulfilling all your home audio needs, also easy to create 2.1 or multi-channel audio systems by connecting active speakers, amplifiers, or subwoofers. Multiple devices can be connected and switched at one time to minimize cable-plugging hassles. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eEnhanced details elevate the P1PLUS to perfection: it features tone knobs allowing for precise tuning of bass and treble; with remote control to adjust all settings at your fingertips; and a Bluetooth reset button on the remote to prevent accidental connections; color-variable VU meter complements various listening spaces; the sleek aluminum-alloy CNC-molded body seamlessly blends retro charm with modern design.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eWarm tips:\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1. All analog audio outputs will work at the same time no matter what audio input is selected. While the optical output will only work when PC-USB inputs.  \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2. Only USB input supports PCM 384Khz\/32bit DSD256, coaxial and optical inputs only support PCM 192KHz\/24Bit at the highest.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e3. For win7, PC-USB only can be recognized when the driver is installed. For other systems, the driver is only required when playing DSD files.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e4. P1PLUS default comes with JAN5654 tubes, can be replaced by 6J1, 6K4, 6J5, GE5654W, 6*1N, 6*2N, 6J5,6A2, etc. \u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e5. The volume \/ treble \/ bass of the three outputs (stereo RCA \/ 3.5mm AUX output and 3.5mm headphone jack) are controlled simultaneously.  \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eParameters\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eBrand: Douk Audio\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eModel: P1 PLUS\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio input: Bluetooth \/ USB \/ Coaxial \/ Optical \/ Stereo RCA \/ 3.5mm AUX\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio output: Optical \/ Stereo RCA \/ 3.5mm AUX \/ 3.5mm headphone jack\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eChipset: QCC5125+SA9137L+ES9018K2M+TPA6120+OPA1656+NE5532 (2PCS pluggable)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMax. Sampling rate USB supported: PCM 384KHz\/32Bit \/ DSD256\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMax. Sampling rate Coaxial\/Optical supported: PCM 192KHz\/24Bit\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eOperation systems PC-USB supported: W7\/W8\/W10\/W11\/MAC\/Linux\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eBluetooth version: 5.1 (support AAC\/SBC\/APTX\/APTX-HD\/LDAC)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFrequency response: 20Hz-20kHz(±1.8dB)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTHD: 0.1%\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eSNR: ≥106dB\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eInput sensitivity: 0dBFS\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eOutput level: 2V\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMatched impedance of headphones: 16-600Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eOutput power of headphone jack: 750mW\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eWorking voltage: DC 12V (≥1.5A)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eNet weight: 906g \/ 2.0lb\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage weight: 1.60kg \/ 3.53lb\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDimensions(W*D*H): 224*86*95mm\/8.82*3.39*3.74in \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage dimensions(W*D*H): 288*195*100mm \/ 11.34*7.68*3.94in\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePacking List\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1 × P1PLUS\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1 × DC 12V Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2 × JAN5654 Tube\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1 × VU Meter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1 × Remote Control (without batteries)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1 × Bluetooth Antenna\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1 × USB Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1 × Optical Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1 × User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47406444904680,"sku":"SUC-P1-PLUS-US","price":189.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406444937448,"sku":"SUC-P1-PLUS-UK","price":189.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406444970216,"sku":"SUC-P1-PLUS-DE","price":189.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406445002984,"sku":"SUC-P1-PLUS-AU","price":189.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406445035752,"sku":"SUC-P1-PLUS","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/White-01.jpg?v=1727249229"},{"product_id":"douk-audio-q2pro-mini-stereo-gaming-dac-mic-headphone-amp-usb-opt-d-a-audio-converter-32bit-192k","title":"Douk Audio Q2PRO Mini Stereo Gaming DAC Headphone Amp USB\/OPT D\/A Converter","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eHigh-End Chipset for Superior Audio: The Q2Pro USB DAC adopts premium ESS9039Q2M (DAC), SA9123L (USB), SGM8262 and NE5532 op-amps, supports PCM 32bit\/192KHz high-resolution decoding. Its excellent circuit design ensures superior performance with a SNR over 117dB and a low THD of 0.0009%, delivering an exceptional listening pleasure with its ultra-pure sound of richer details, lower distortion and larger dynamic range.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eQ2Pro Gaming DAC Headphone Amp: Supports MIC input and separate MIC volume control, the Q2Pro is born for gaming, perfectly compatible with PC, PS4,etc., achieves real-time communication during gaming, meeting or live streaming etc. Additional bass control of ±12db and clipping indicator, significantly to enhance audio details and boost game immersion and avoid distortion, freely to experience the extreme gaming enjoyment from the Q2Pro.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eStrong Functions and Versatile Uses: One Q2Pro to meet all your desktop audio needs. With USB, optical and MIC inputs, stereo RCA, optical, and 3.5mm headphone jack outputs, the Q2Pro can served as a USB DAC, a headphone amplifier, a digital interface, an audio preamp to work perfectly with all common audio devices but also a USB docking station to connect keyboards, mice, USB flash drives etc. to make your desktop cleaner and tidier.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eHigh-Power Output and PURE Mode: With an impressive output power of 450mW@32Ω, the Q2Pro can effortlessly drive a wide range of headphones with 16-300Ω and unleash their best performance. Not only experience the shocking bass effects when gaming or watching a movie, the Q2Pro also allows you to remove the tone control and enjoy the purest sound with its PURE mode when listening to high-quality music.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUser-Friendly Design for Easy Operation: The Q2Pro integrates the volume and power knob into one to simplify the use; external power port guarantees a powerful and vibrant audio experience; dual MIC inputs compatible with various headphones; aluminum alloy body and CNC-molded, compact but durable; supplied with an OTG USB Type-A\/C to Type-C cable etc. Q2Pro is the best choice for the enthusiasts both in audio and games.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan\u003eWarm Tips:\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cspan\u003e1. The USB input (type-C) can transmit audio signals and provide power to the Q2Pro. If the supply current is less than 2A, please prepare a high-quality DC5V\/2A adapter to connect its upper USB interface  (DC 5V IN) to ensure its ideal performance.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2. The microphone interface on the left is prior to the right one. If both MIC inputs are connected, only the left one will work.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e3. The volume and bass knob only control the analog audio outputs (RCA\/3.5mm headphone jack), invalid for the optical output.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e4. The Q2Pro adopts 1PC SGM8262 and 7PCS NE5532 op amps, only one is pluggable and supports to replaced by dual op-amps like 2134\/2604\/5532\/2068\/muse02 etc.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003e5. The Q2Pro supports OTG function and the supplied USB cable supports OTG for Android devices. However, iOS systems require a Lightning to USB camera kit, which you need to prepare yourself.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan\u003eParameters\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eModel: Q2Pro\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAudio input: USB-C \/ Optical \/ Microphone\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAudio output: Optical \/ Stereo RCA \/ 3.5mm headphone jack\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eChipsets: ESS9039Q2M+SA9123L\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFrequency response: 20Hz-20kHz（±0.5dB)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eInput sensitivity: 0dBFS\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eTHD+N: 0.0009%\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSNR: ≥117dB\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSampling rate supported: Up to PCM 192KHz\/32Bit\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eRated output level: 2V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eHeadphone output power: 450mW@32Ω    \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMatched headphone impedance: 16-300Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBass adjustment range: ±12dB\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePure mode: supported (bass control not valid)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eWorking voltage: DC 5V(≥2A) \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePower interface: USB (type-c)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDimensions (W*D*H): 195*160*70mm\/7.68*6.30*2.76in\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePackage dimensions (W*D*H): 195*155*70mm\/7.68*6.10*2.76in\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNet weight: 320g\/0.71lb\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 500g\/1.10lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan\u003ePacking List\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1*Q2Pro \u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1*USB Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1*Optical Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1*User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47596726911208,"sku":"SUC-Q2-PRO-US","price":79.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47596726943976,"sku":"SUC-Q2-PRO-UK","price":79.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47596726976744,"sku":"SUC-Q2-PRO-DE","price":79.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47596727009512,"sku":"SUC-Q2-PRO-AU","price":79.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47596727042280,"sku":"SUC-Q2-PRO","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_d4c39fc2-5a3b-40bc-8a5b-c151a66658ad.jpg?v=1727249638"},{"product_id":"douk-audio-e2-tube-headphone-amplifier-xlr-4-4mm-6-35mm-hifi-stereo-preamplifier","title":"Douk Audio E2 Tube Headphone Amplifier XLR\/4.4mm\/6.35mm HiFi Stereo Preamplifier","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePowerful Output and Wide Compatibility: The E2 delivers a powerful output of up to 2000mW, powered by two TPA6120 chips, capable of driving headphones of 16Ω to 600Ω. It supports XLR\/4.4mm\/6.35mm jack, including an equipped 6.35mm to 3.5mm adapter, compatible with the vast majority of headphones.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eHigh-Performance Preamp: E2 is also a powerful preamp with dual RCA inputs and intuitive switches, allowing you to effortlessly switch between audio sources. Whether you want to use it as a headphone amplifier or a pre-amplifier, or even both at the same time, the E2 ensures an ultra-flexible and dynamic listening experience.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eLuxury ECF801 Tube for Unmatched Sound: The E2 is equipped with German Valvo ECF801 tube, renowned for its rare availability and exceptional quality. Operating at a high internal voltage up to 175V, the military-grade tube delivers immersive audio, capturing the essence of classic tube sound.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTimeless Retro VU Meter and Wood Design: The vintage-style vacuum tubes, VU meter and walnut wood panels, mounted on the exterior of the aluminum casing, seamlessly blend natural beauty with industrial elegance. A stunning piece that enhances any space, from home audio setups to professional studios. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eCustomizable Op-amp and High-End Components: \u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eThe E2 adopts LME49720 op-amp, giving you the flexibility to swap and tailor the sound to your preferences, along with premium components like Japanese ALPS potentiometer and German WIMA capacitors, ensuring superior sound quality and performance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eWarm tips\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1. Due to scarcity, the two square Wima capacitors are used parts taken from previous devices.  \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2.The working voltage of E2 is DC 15V(≥3A), below or over this will cause bad performance or damage. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e3.The three headphone jacks cannot output simultaneously. Please select one jack for use.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e4.Stereo RCA output and headphone output can work at the same time, and the volume\/gain of the two outputs are controlled simultaneously.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e5.E2 adopts 1PC NE5532 and 1PC 49720 op-amps. Only 49720 op-amp is pluggable and supports to be replaced by dual op-amps like 2604\/2134\/muses02 etc.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eBrand: Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eModel: E2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio input: 2 groups of stereo RCA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio output: Stereo RCA\/4-pin XLR\u0026amp;4.4mm\u0026amp;6.35mm headphone jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFrequency response: 20Hz-20kHz (±0.5dB)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTHD+N: 0.02%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eSNR: ≥110dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMatched headphone impedance: 16-600Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eHeadphone output power: Low gain(L): 0.55W   High gain(H): 2W\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eRCA output level: Low gain(L): 4.3V   High gain(H): 8.4V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eInput sensitivity: 2V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eWorking voltage: DC 15V\/≥3A\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDimensions (W*D*H): 95*92*50mm \/ 3.74*3.62*1.97in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage dimensions (W*D*H): 280*230*110mm \/ 11.02*9.05*4.33in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eNet weight: 1.17kg \/ 2.58lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage weight: 1.6kg \/ 3.53lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePacking list\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1* E2 Headphone Amplifier\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2* ECF801 Tubes\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1* DC 15V Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1* 6.35mm to 3.5mm Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47406458962152,"sku":"SUC-E2-US","price":219.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406458994920,"sku":"SUC-E2-UK","price":219.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406459027688,"sku":"SUC-E2-DE","price":219.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406459060456,"sku":"SUC-E2-AU","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406459093224,"sku":"SUC-E2","price":219.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_0c103343-73aa-440a-bf3b-766a64b8d1d7.jpg?v=1735118296"},{"product_id":"douk-audio-p2-fm-magic-6e2-preamp-stereo-headphone-amp-sound-level-indicator-fm-radio-clock","title":"Douk Audio P2-FM Magic 6E2 Preamp Stereo Headphone Amp Sound Level Indicator FM Radio Clock","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eVivid music spectrum: the VFD screen and captivating 6E2 tubes bring your music to life, displaying audio levels in sync with the rhythm. Whether from MIC or line input, the pulse and glow immerse you in both sight and sound.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eEnhanced audio style: P2-FM is a preamp as well as a headphone amplifier, offering rich sound performance, blending vintage fluorescence with modern technology, adding unique charm to your home studio.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eHandy FM radio: tune in to FM stations with manual input, auto-scan, and the ability to save up to 10 favorite stations. An equipped high-gain antenna ensures strong signal reception, while the line output jack allows private listening.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDigital clock for bedroom: P2-FM combines timekeeping accuracy (within ±1 minute per year) with customizable font and animation styles. The integrated Pomodoro timer boosts productivity with a 30\/5 min work cycle. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMore user-friendly designs: P2-FM supports three selectable frequency bands for global coverage. With adjustable tube gain and 7 levels of VFD brightness, it’s a stylish desk decoration that complements any environment.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eWarm tips\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1. The bias and gain of two 6E2 tubes are set well before shipping, please pay attention to the R\/L channel markings on the tubes, don't insert them wrongly during installation.\u003cbr\u003e2. 3.5mm headphone jack with priority, please make sure the headphone has been disconnected if you want LINE output.\u003cbr\u003e3. If the ANT is not connected to an antenna, LINE OUT can also be connected to an audio cable or headphones as an antenna.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 18.6667px;\"\u003e4. It's suggested the 6E2 tubes be turned off when displaying time for a long period.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 18.6667px;\"\u003e5. When AUX input is plugged, only clock\/sound level modes can work. In Radio mode, the VFD can only display radio frequency.  \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eBrand: Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eModel: P2 FM\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio input: 3.5mm AUX\/Microphone\/FM\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAudio output: 3.5mm AUX\/3.5mm headphone jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDisplay mode: Sound level\/FM Radio\/Clock\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eInput impedance: 20KΩ\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eOutput impedance: 10Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eSNR: ≥98dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eTHD: 0.003%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eMatched headphone impedance: 32-200Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eHeadphone output power: 50mW@32Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eFM frequency range: ①87.0MHz-108.0MHz   ②76.0MHz-90.0MHz   ③65.0MHz-74.0MHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eWorking voltage: DC 9-14V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDimensions (W*D*H): 105*106*38mm\/4.13*4.17*1.50in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage dimensions (W*D*H): 200*190*100mm\/7.87*7.48*3.94in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eNet weight: 402g\/0.89lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePackage weight: 800g\/1.76lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\u003chr\u003e\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePacking list\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1* P2-FM Preamplifier\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2* 6E2 Tubes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1* DC 12V Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1* FM Antenna\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1* Set of Feet\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1* Screwdriver\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47406976499944,"sku":"XX-P2-FM-US","price":79.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406976532712,"sku":"XX-P2-FM-UK","price":79.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406976565480,"sku":"XX-P2-FM-DE","price":79.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406976598248,"sku":"XX-P2-FM-AU","price":79.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406976631016,"sku":"XX-P2-FM","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_39fdb329-3bf9-43c4-907e-1730a66c0dc3.jpg?v=1735118652"},{"product_id":"douk-audio-a5-pro-tpa3255-bluetooth-amplifier-hifi-class-d-stereo-audio-amp","title":"Douk Audio A5 PRO TPA3255 Bluetooth Amplifier HiFi Class D Stereo Audio Amp","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eUpgraded Features for Versatile Use\u003c\/span\u003e: The A5 PRO builds on the strengths of the A5, featuring upgraded Bluetooth 5.1 connectivity with a reset button, bass and treble knobs for precise\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003etone\u003c\/span\u003e adjustments, and a headphone output. It delivers clear, powerful audi\u003cspan\u003eo, \u003c\/span\u003eperfect for diverse uses from bedroom movies to\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003edesktop\u003c\/span\u003e setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eEasy Customization with Plug-and-Play Op-Amps: Upgrade your sound effortlessly! Douk Audio A5 \u003cspan\u003ePRO\u003c\/span\u003e includes a tempered glass access panel for quick op-amp replacements, allowing audiophiles to tailor sound profiles without disassembling the unit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003ePFFB Technology and High-Performance PCB: Built with Post-Filter Feedback technology circuit and a 4-layer immersion gold PCB, this digital amplifier reduces distortion and improves frequency response. Enjoy unparalleled audio precision, enhanced signal integrity, and effective heat management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eStunning Design for Living Rooms and Studios: Sleek and modern, the compact power amp is equipped with a transparent panel and adjustable internal LED lighting. Multiple color options create a futuristic look, adding sophistication to your home audio setup or studio.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eImpressive Power Output: The A5 PRO delivers a maximum output of 300W\u003c\/span\u003e\u003cspan\u003e×\u003c\/span\u003e\u003cspan\u003e2 with TPA3255, perfect for driving high-power systems, and 500mW@32Ω \u003c\/span\u003e\u003cspan\u003efor detailed, dynamic headphone listening.\u003c\/span\u003e \u003cspan\u003eWith premium components like Rubycon\/WIMA capacitors, it\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eensures optimal performance with bookshelf speakers and other devices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eWarm tips\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv\u003e1. The A5\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003ePRO\u003c\/span\u003e with 2PCS pluggable NE5532 op-amps, can be upgraded by dual op-amps like 2134\/2604\/5532\/2068\/muse02 etc.\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e2. The speaker output, AUX and 3.5mm headphone jack output can work at the same time, and the volume\/treble\/bass of the three outputs are controlled simultaneously.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: A5 PRO\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio input: Bluetooth \/ Stereo RCA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio output: Banana speaker jacks \/ AUX \/ 3.5mm headphone jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHeadphone output power: 500mW\/32Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatched headphone impedance: 16-600Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMax. output power: 300W*2 (4Ω)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatched speaker impedance: 4-8Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: 20Hz-20KHz (±1dB)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTHD+N: 0.003%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: ≥113dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBass\/treble range: ±6dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBluetooth version: 5.1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRCA input sensitivity: 2V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAUX rated output level: 3.7V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWorking voltage: DC 24-48V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W*D*H): 130*112*33mm \/ 5.12*4.41*1.30in \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage dimensions (W*D*H): 265*240*65mm \/ 10.43*9.45*2.56in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet weight: 525g \/ 1.16lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 1.2kg \/ 2.65lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003ePower Output Table of  A5 PRO\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable style=\"margin-left: 0px; margin-right: auto;\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eSpeaker Impedance\u003c\/td\u003e\n\u003ctd\u003eRated Output Power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"3\"\u003e32V\/5A\u003c\/td\u003e\n\u003ctd\u003e4Ω \u003c\/td\u003e\n\u003ctd\u003e78W+78W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6Ω \u003c\/td\u003e\n\u003ctd\u003e71W+71W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8Ω \u003c\/td\u003e\n\u003ctd\u003e65W+65W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"3\"\u003e36V\/6A\u003c\/td\u003e\n\u003ctd\u003e4Ω \u003c\/td\u003e\n\u003ctd\u003e107W+107W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6Ω \u003c\/td\u003e\n\u003ctd\u003e100W+100W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8Ω \u003c\/td\u003e\n\u003ctd\u003e94W+94W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"3\"\u003e48V\/5A\u003c\/td\u003e\n\u003ctd\u003e4Ω \u003c\/td\u003e\n\u003ctd\u003e120W+120W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6Ω \u003c\/td\u003e\n\u003ctd\u003e110W+110W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8Ω \u003c\/td\u003e\n\u003ctd\u003e102W+102W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"3\"\u003e\n\u003cbr\u003e48V\/10A\u003cbr\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e4Ω \u003c\/td\u003e\n\u003ctd\u003e250W+250W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6Ω \u003c\/td\u003e\n\u003ctd\u003e210W+210W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8Ω \u003c\/td\u003e\n\u003ctd\u003e185W+185W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: left;\"\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003ePacking list\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1* A5 PRO Amplifier\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1* DC 32V\/5A Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1* Bluetooth Antenna\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"With 32V\/5A Power Adapter \/ US","offer_id":47198645092584,"sku":"SUC-A5-PRO-32V-US","price":114.99,"currency_code":"USD","in_stock":true},{"title":"With 32V\/5A Power Adapter \/ UK","offer_id":47406404370664,"sku":"SUC-A5-PRO-32V-UK","price":114.99,"currency_code":"USD","in_stock":true},{"title":"With 32V\/5A Power Adapter \/ EU","offer_id":47406404403432,"sku":"SUC-A5-PRO-32V-DE","price":114.99,"currency_code":"USD","in_stock":true},{"title":"With 32V\/5A Power Adapter \/ AU","offer_id":47406404436200,"sku":"SUC-A5-PRO-32V-AU","price":114.99,"currency_code":"USD","in_stock":true},{"title":"With 32V\/5A Power Adapter \/ Other","offer_id":47406404468968,"sku":"SUC-A5-PRO-32V","price":114.99,"currency_code":"USD","in_stock":true},{"title":"With 48V\/5A Power Adapter \/ US","offer_id":47198645125352,"sku":"SUC-A5-PRO-48V-S-US","price":134.99,"currency_code":"USD","in_stock":true},{"title":"With 48V\/5A Power Adapter \/ UK","offer_id":47406404501736,"sku":"SUC-A5-PRO-48V-S-UK","price":134.99,"currency_code":"USD","in_stock":true},{"title":"With 48V\/5A Power Adapter \/ EU","offer_id":47406404534504,"sku":"SUC-A5-PRO-48V-S-DE","price":134.99,"currency_code":"USD","in_stock":true},{"title":"With 48V\/5A Power Adapter \/ AU","offer_id":47406404567272,"sku":"SUC-A5-PRO-48V-S-AU","price":134.99,"currency_code":"USD","in_stock":true},{"title":"With 48V\/5A Power Adapter \/ Other","offer_id":47406404600040,"sku":"SUC-A5-PRO-48V-S","price":134.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/SUC-A5-PRO_1.jpg?v=1740377698"},{"product_id":"douk-audio-tube-t5c-mini-stereo-tube-preamp-4-way-audio-selector-splitter-headphone-amp-w-vu-meter","title":"Douk Audio TUBE-T5C Mini Stereo Tube Preamp 4-Way Audio Selector Splitter Headphone Amp w\/ VU Meter","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eOptimized Tube Amplification: \u003c\/span\u003e\u003cspan\u003ePowered by an isolated power section with metal shielding, effectively reducing interference for a cleaner and more stable audio signal. The tube operates at a boosted 180V, maximizing its performance for a rich, dynamic sound.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e4-Way Audio Selector \u0026amp; Splitter: \u003c\/span\u003e\u003cspan\u003eSupports up to 4 RCA inputs, allowing easy connection to CD players, DACs, streamers, and Blu-ray players etc. The input switch enables seamless comparison between multiple devices without constant replugging. Dual outputs support simultaneous output, allowing connection to two amplifiers or two active speaker sets.  \u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eVintage VU Meter and Built-in Tube: \u003c\/span\u003e\u003cspan\u003eThe elegant VU meter, paired with a glowing tube, brings a timeless vintage aesthetic. The adjustable internal RGB lighting further enhances the ambiance. Whether in a studio or a cozy listening space, it creates an immersive experience.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eHeadphone Output \u0026amp; Tone Control: \u003c\/span\u003e\u003cspan\u003eWith an integrated headphone jack, it delivers up to 500mW at 32Ω, ensuring ample drive for a wide range of headphones. Additionally, the adjustable bass and treble controls allow for precise tonal shaping, letting you customize the sound to match different headphones and audio setups.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eEasy Op-amp and Tube Upgrades: \u003c\/span\u003e\u003cspan\u003eDesigned for effortless customization, the pluggable sockets allow users to easily swap out op-amps and tubes for enhanced flexibility. Upgrade to higher-end components to refine the sound quality and elevate your listening experience.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eWarm tips\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv\u003e\u003cspan\u003e1. All outputs work at the same time. The volume\/treble\/bass are controlled simultaneously.  \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e2. If the VU meter needle isn't moving noticeably, please turn up the bass and the master volume.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e3. 10-second warm-up required; audio delayed during tube activation.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e4. \u003c\/span\u003e\u003cspan\u003eThe TUBE-T5C with 1PC pluggable NE5532 op-amp, can be upgraded by dual op-amps like 2134\/2604\/5532\/2068\/muse02.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e5. Default one ECC83 tube, can be directly replaced by PSVANE 12AX7-S and Shuguang 12AX7B \/ 7025 \/ 12AX7 etc.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e6. High voltage inside, please turn the TUBE-T5C off first before replacing the op-amp and the tube, and avoid dropping anything inside.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Nobsound\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: TUBE-T5C\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio input: 4 groups of RCA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio output: 2 groups of RCA \/ 3.5mm headphone jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInput sensitivity: 0.775V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRated output level: 2V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: 20Hz-20KHz (±0.8dB)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTHD+N: 0.06%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: ≥107dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBass\/treble range: ±6dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHeadphone output power: 500mW\/32Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatched headphone impedance: 16-600Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWorking voltage: DC 12V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W*D*H): 152*92*85mm \/ 5.98*3.62*3.35in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage dimensions (W*D*H): 285*155*110mm \/ 11.22*6.10*4.33in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet weight: 827g \/ 1.82lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 1.10kg \/ 2.42lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003ePacking list\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1* TUBE-T5C Preamp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1* DC 12V Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1* Hexagonal Wrench\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47406467383528,"sku":"SUC-TUBE-T5C-US","price":109.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406467416296,"sku":"SUC-TUBE-T5C-UK","price":109.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406467449064,"sku":"SUC-TUBE-T5C-DE","price":109.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406467481832,"sku":"SUC-TUBE-T5C-AU","price":109.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406467514600,"sku":"SUC-TUBE-T5C","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/b8230117d6358065dd6cc75f562bea3d.jpg?v=1747795184"},{"product_id":"douk-audio-p5-hifi-vaccum-tube-headphone-amplifier-stereo-audio-preamp","title":"Douk Audio P5 HiFi Vaccum Tube Headphone Amplifier Stereo Audio Preamp with 4.4\/6.35mm Jack","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eDual-Mono Architecture:\u003cstrong data-end=\"245\" data-start=\"194\"\u003e \u003c\/strong\u003eEach channel is powered by its own dedicated amplifier circuit, ensuring superior stereo separation and reduced crosstalk. Paired with a 200V high-voltage tube stage, the P5 headphone amp delivers rich, clean, and warm analog audio. This structure outperforms shared-path designs for a more immersive hi-fi listening experience.  \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVersatile Headphone Outputs: Supports both 4.4mm balanced and 6.35mm single-ended jacks, making it ideal for studio headphones and audiophile setups. With an impedance switch, you can easily adjust gain levels (5dB\/15dB) to match your headphones from 16–600Ω, ensuring optimal clarity.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eWorks as a Tube Preamp: Beyond headphones, route the P5’s analog signal through RCA OUT to your desktop power amp or active speakers. Unlock rich tube harmonics and dynamic presence in your entire audio system—ideal for audiophiles and creators seeking vintage depth with modern transparency.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eFully Customizable Experience: Featuring plug-in NE5532 op-amps and replaceable 6A2 vacuum tubes, the P5 invites you to fine-tune your sound. Roll your tubes or swap op-amps to craft your perfect sonic signature, no soldering required.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003ePremium Build with Visual Flair: Choose between a sleek full-aluminum chassis or retro walnut wood to match your style. A six-mode ambient LED system adds a visual glow synced to your music, while adjustable tube warm-up (10–30s) extends tube life and protects your headphones on startup.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eWarm tips\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003e1.The enclosure of wooden version is crafted from solid walnut. Due to the natural variation in wood grain, the actual product may differ slightly in appearance from the images.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003e2.Input and output priority is as follows: Input – AUX \u0026gt; RCA; Output – 4.4mm headphone jack\u0026gt; 6.35mm headphone jack\u0026gt; RCA. If there’s no sound, please check priority and unplug unused ports.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003e3.10-30 seconds warm-up required. It is normal for there to be no audio output during tube activation.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003e4.High voltage inside. Please power off and disconnect P5 from the power source before replacing the op-amp or vacuum tubes.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003e5.P5 adopts 2PCS pluggable NE5532 op-amps, which can be replaced by dual op-amps such as 4558\/JRC2068\/2064\/MUSE01S\/2111 etc.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003e6.P5 is designed with pluggable tube sockets, default comes with 6A2 tubes, can be replaced by 5654\/6*7N\/6AK5\/EF95\/403B tubes.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: P5\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAudio input: AUX \/ RCA (Priority: \u003c\/span\u003e\u003cspan\u003eAUX \u0026gt; RCA\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAudio output: \u003c\/span\u003e\u003cspan\u003e4.4mm\u0026amp;6.35mm headphone output \/ RCA\u003cbr\u003e                       (\u003c\/span\u003e\u003cspan\u003ePriority: \u003c\/span\u003e\u003cspan\u003e4.4mm headphone jack\u0026gt; 6.35mm headphone jack\u0026gt; RCA)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTHD: \u0026gt;0.01%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: 80dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eGain: Low impedance: 5dB@200\u003c\/span\u003e\u003cspan\u003eΩ\u003c\/span\u003e  \u003cspan\u003eHigh impedance: 15dB@600\u003c\/span\u003e\u003cspan\u003eΩ\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eRCA max. output level: \u003c\/span\u003e\u003cspan\u003eLow impedance: 1.5Vrms   High impedance: 5.75Vrms\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eHeadphone output power: 200mW@32\u003c\/span\u003e\u003cspan\u003eΩ\u003c\/span\u003e\u003cspan\u003e; 80mW@300\u003c\/span\u003e\u003cspan\u003eΩ\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMatched headphone impedance: 16-600\u003c\/span\u003e\u003cspan\u003eΩ\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHeadphone impedance switch: Support\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eBacklight LED color\u003cspan\u003e: \u003c\/span\u003e6 modes\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eT\u003c\/span\u003eubes\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003ewarm-up\u003c\/span\u003e time\u003cspan\u003e: Adjustable \u003c\/span\u003e10–30 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eInput voltage: DC 9-15V\/\u003c\/span\u003e\u003cspan\u003e≥\u003c\/span\u003e\u003cspan\u003e1A\u003c\/span\u003e \u003cspan\u003e(5.5*2.5mm)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDimensions (W*D*H):\u003cbr\u003e102*102*40mm \/ 4.01*4.01*1.57in (wooden version);\u003cbr\u003e\u003c\/span\u003e102*102*40mm\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\/ 4.01*4.01*1.57in  (aluminum version)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePackage dimensions (W*D*H):\u003cbr\u003e210*185*96mm \/ 8.27*7.28*3.78in (wooden version); \u003cbr\u003e\u003c\/span\u003e210*185*96mm\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\/ 8.27*7.28*3.78in (aluminum version)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNet weight:\u003cbr\u003e310g \/ 0.68lb (wooden version); \u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e420g \/ 0.92lb (aluminum version)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePackage weight:\u003cbr\u003e0.6kg \/ 1.32lb (wooden version); \u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e0.7kg \/ 1.54lb (aluminum version)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003ePacking list\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1* P5 Headphone Amp (Optional)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan\u003e1* DC 12V Power Adapter\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e2* 6A2 Tubes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"doukaudio","offers":[{"title":"Walnut Wood \/ US","offer_id":47373416071400,"sku":"XX-P5-M-US","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Walnut Wood \/ UK","offer_id":47406466597096,"sku":"XX-P5-M-UK","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Walnut Wood \/ EU","offer_id":47406466629864,"sku":"XX-P5-M-DE","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Walnut Wood \/ AU","offer_id":47406466662632,"sku":"XX-P5-M-AU","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Walnut Wood \/ Other","offer_id":47406466695400,"sku":"XX-P5-M","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Aluminum Alloy \/ US","offer_id":47373416104168,"sku":"XX-P5-L-US","price":79.99,"currency_code":"USD","in_stock":true},{"title":"Aluminum Alloy \/ UK","offer_id":47406466728168,"sku":"XX-P5-L-UK","price":79.99,"currency_code":"USD","in_stock":true},{"title":"Aluminum Alloy \/ EU","offer_id":47406466760936,"sku":"XX-P5-L-DE","price":79.99,"currency_code":"USD","in_stock":true},{"title":"Aluminum Alloy \/ AU","offer_id":47406466793704,"sku":"XX-P5-L-AU","price":79.99,"currency_code":"USD","in_stock":true},{"title":"Aluminum Alloy \/ Other","offer_id":47406466826472,"sku":"XX-P5-L","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/2_e88cad32-2df6-462b-8f9b-4a53ff519828.jpg?v=1748230781"},{"product_id":"nobsound-p10-pro-portable-tube-headphone-amplifier","title":"Nobsound P10 PRO HiFi Portable Tube Headphone Amplifier","description":"\u003cdiv\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli data-start=\"78\" data-end=\"127\"\u003e\u003cspan\u003ePortable HiFi Sound: Driven by batteries, P10-PRO features Raytheon JAN6418 direct-heating tubes to deliver rich, warm tube sound. Whether you’re traveling, commuting, or relaxing at home, it pairs effortlessly with your phone, laptop, computers etc. and provides exceptional headphone performance anytime, anywhere.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-start=\"476\" data-end=\"512\"\u003e\u003cspan\u003eWorry-Free Battery Life: Enjoy up to\u003cstrong\u003e \u003c\/strong\u003e8-10 hours of uninterrupted music with two\u003cstrong\u003e \u003c\/strong\u003e600mAh lithium batteries. The P10-PRO supports USB-C charging, allowing you to recharge while listening. When powered off, it fully recharges in just 2.5-3 hours. With the replaceable battery design, you have the option to swap batteries for extended use.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-start=\"1511\" data-end=\"1570\"\u003e\u003cspan\u003eCustomizable Tubes \u0026amp; Op-Amps: Unlock the true potential of P10-PRO with swappable tubes and op-amps. Start with the original JAN6418 tubes and NE5532 op-amp, then explore upgrades for more possibilities. Enjoy a personalized audiophile experience tailored to your tastes.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-start=\"1511\" data-end=\"1570\"\u003e\u003cspan\u003eVisible Top Window: Admire the mesmerizing glow of the JAN6418 tubes through the top window. See the tubes and op-amps in action, adding a touch of style to your audio setup. It not only enhances the aesthetic appeal but also offers insight into the components that shape your premium audio experience.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-start=\"1511\" data-end=\"1570\"\u003e\u003cspan\u003eBuilt for Durability and Convenience: Equipped with WIMA capacitors and a CNC-machined aluminum chassis, the P10-PRO is built to last. Also comes with clear battery status and thoughtful accessories including cables, rubber bands, and a screwdriver—ready for quick setup and hassle-free operation.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: Why does the P10 make a noise when powered on\u003c\/strong\u003e\u003cstrong\u003e\/off\u003c\/strong\u003e\u003cstrong\u003e or \u003c\/strong\u003e\u003cstrong\u003eshocke\u003c\/strong\u003e\u003cstrong\u003ed?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eA:\u003c\/strong\u003e JAN6418 are directly heated tubes. During power-on\/off or physical shock\/tap\/vibration, a \"wing~~~\" noise may occur for 25-35 seconds, which is normal and will fade as the tube stabilizes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: What kind of charger should I use?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Please use a standard 5V DC power supply. Avoid fast chargers to prevent damage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: Can I replace the batteries with different brands or models?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No. Always use two batteries of the same brand, model, and capacity to avoid malfunctions or safety risks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: \u003c\/strong\u003e\u003cstrong\u003eIs there a temperature requirement for use?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eA:\u003c\/strong\u003e 8°C to 50°C (46°F to 122°F). Avoid extreme temperatures to ensure proper charging and performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: \u003c\/strong\u003e\u003cstrong\u003eI\u003c\/strong\u003e\u003cstrong\u003ef I won’t use the P10 for a while\u003c\/strong\u003e\u003cstrong\u003e, should I remove the batteries?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: \u003c\/strong\u003e\u003cstrong\u003eCan I replace the tubes\u003c\/strong\u003e\u003cstrong\u003e?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. The default Raytheon JAN6418 tubes can be replaced with CK6418 or CK548DX. Remove glue from the pins before replacement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: Can I upgrade the op-amp?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. The default NE5532 can be upgraded to dual op-amps like JRC4558, JRC4556, OPA2604, OPA2111, or MUSES02.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Nobsound\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: P10-PRO\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio input: 3.5mm AUX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio output: 3.5mm headphone jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOutput power: 170mW@32Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: 20Hz-20KHz  \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTHD: \u0026lt;0.1%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: 75dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGain: 12dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMax. input level: 1.0Vrms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMax. output level: 2.5Vrms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMatched headphone impedance: 16-200Ω\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWorking mode: Vacuum tube + Op-amp hybrid\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePower supply: 2 × 14500 Li-ion batteries (3.7V, 600mAh each, total 1200mAh)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBattery life: 8–10 hours (varies with volume level used)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBattery indicator display: 5-level (0% \/ 25% \/ 50% \/ 75% \/ 100%)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWorking temperature: 8-50℃\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInput voltage: DC 5V\/≥1A\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W*D*H): 120*75*18mm \/ 4.72*2.95*0.71in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage dimensions (W*D*H): 195*120*65mm \/ 7.68*4.72*2.56in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet weight: 252g \/ 0.55lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 400g \/ 0.88lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePacking list\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* P10-PRO Headphone Amp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* 3.5mm Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Type-C Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2* Rubber Band\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Screwdriver\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47612155789544,"sku":"XX-P10-PRO-US","price":109.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47612155822312,"sku":"XX-P10-PRO-UK","price":109.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47612155855080,"sku":"XX-P10-PRO-DE","price":109.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47612155887848,"sku":"XX-P10-PRO-AU","price":109.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47612155920616,"sku":"XX-P10-PRO","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/10_3a854944-2eaf-43a8-a986-1876406a1b4e.jpg?v=1755679321"},{"product_id":"nobsound-p10-mini-hifi-audio-stereo-headphone-amplifier","title":"Nobsound P10 Mini Headphone Amplifier HiFi Stereo Preamp","description":"\u003cdiv\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003ePowerful Output for All Headphones:\u003cstrong data-end=\"271\" data-start=\"230\"\u003e \u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003eDelivers up to 1100mW@32Ω output to drive 24–600Ω headsets with ease. Ideal for both sensitive IEMs and demanding over-ears, ensuring clear, rich, and dynamic audio performance.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFlexible I\/O for Wide Compatibility: Supports stereo RCA and 3.5mm AUX inputs, plus 6.35mm and 3.5mm headphone outputs. Easily connect DACs, PCs, phones, CD players. The 3.5mm output can also serve as a preamp output for amplifiers or active speakers.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eHigh-Voltage Circuit for Purer Sound:\u003c\/span\u003e\u003cstrong data-end=\"653\" data-start=\"610\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003eBuilt-in 30V voltage boost enhances headroom, reduces distortion, and improves dynamics. Enjoy purer sound with greater detail and smoother transients—perfect for HiFi and studio listening. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSwap Op-Amps for Custom Sound: Comes with dual NE5532 op-amps in pluggable sockets. Fine-tune the sound signature to your liking, ideal for audiophiles, DIY enthusiasts, or anyone exploring different tones. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eCompact Build, Big Performance: Built with a mini aluminum enclosure, the P10 blends seamlessly into any desktop audio setup. With an included power adapter, it offers stable performance and clean output.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eWarm tips\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e1. Please use the supplied DC 5V\/2A power adapter to ensure optimal performance of the P10. If using other power supply, make sure it provides at least 1A current. Otherwise, the P10 may not function properly. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e2. The RCA and AUX inputs, as well as the 3.5mm and 6.35mm outputs, work at the same time. Please don’t connect the two inputs at the same time, or else audio signals will be mixed.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e3. P10 adopts 2PCS pluggable NE5532 op-amps, which can be upgraded by LME49720NA-DIP-8 or any other dual op-amp in an 8-pin package with an output current exceeding 50mA.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e4. P10 can easily drive all headphones even with high-impedance such as HD580\/HD600\/HD650\/K701\/K702\/Q701\/DT880\/T70\/T90\/SR225\/SR325\/RS1e etc.\u003c\/span\u003e\u003c\/div\u003e\n\u003chr\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eParameters\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eBrand: Nobsound \u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eModel: P10\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eAudio input: Stereo RCA\/3.5mm AUX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eAudio output: 3.5mm\/6.35mm headphone jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eOutput power: ≥1100mW (32Ω)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-end=\"1965\" data-start=\"1626\"\u003e\u003cspan\u003eMatched headphone impedance: 24-600Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: 20-30KHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: ≥ 110dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOutput voltage swing: 30V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInput voltage: DC 5V\/≥ 1A (5.5*2.5mm)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W*D*H): 78*82*32mm \/ 3.07*3.23*1.26in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage dimensions (W*D*H): 135*85*90mm \/ 5.31*3.34*3.54in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet weight: 210g \/ 0.46lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 400g \/ 0.88lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdiv\u003e\u003cspan\u003ePacking list\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* P10 Headphone Amp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* DC 5V Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47751464616168,"sku":"XZ-P10-US","price":39.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47751464648936,"sku":"XZ-P10-UK","price":39.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47751464681704,"sku":"XZ-P10-DE","price":39.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47751464714472,"sku":"XZ-P10-AU","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47751464747240,"sku":"XZ-P10","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_091fd387-0280-4ee0-9fb2-426aa4589903.jpg?v=1760938965"},{"product_id":"douk-audio-t12-hifi-tube-phono-preamp-for-mm-mc-turntables-headphone-amp-with-vu-meter","title":"Douk Audio T12 Tube Phono Preamp MM\/MC Turntable Headphone Amp","description":"\u003cdiv\u003e\u003cspan\u003eFeatures\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli data-end=\"435\" data-start=\"194\"\u003e\u003cspan\u003eDisplay-Worthy Vintage Design: Real walnut housing, glowing tubes, and retro sliders give T12 the warm, nostalgic look of classic audio gear, turning a practical tube preamp into a refined HiFi piece that feels at home beside turntables, speakers, and records.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"662\" data-start=\"437\"\u003e\u003cspan\u003ePhono and Line-In Flexibility: Works with MM and MC turntable setups for vinyl playback, while the RCA line input connects CD players, DACs, streamers, or other analog sources, letting T12 serve as both a phono stage and tube preamp for everyday HiFi listening.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"881\" data-start=\"664\"\u003e\u003cspan\u003eBring Out the Tube Warmth: A 120V tube stage helps the 6J5B-Q tubes open up with a smoother, fuller analog tone. Along with low THD and high SNR, T12 gives vocals more body, music a warmer flow, and playback a cleaner foundation.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eTune Sound by Sight and Touch: Bass and treble adjust up to ±10dB, with center-detent sliders for an easy return to neutral. The visible slider positions are easy to read at a glance, helping you fine-tune sound for different records, speakers, rooms, or personal taste.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"1112\" data-start=\"883\"\u003e\u003cspan\u003eOutput Switching Made Easy: Dual RCA outputs let you switch between two amplifier or powered speaker systems for quick comparison or daily listening, without the hassle of repeated unplugging. The 3.5mm headphone output makes late-night personal listening easier.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":48585375449320,"sku":"XX-T12-US","price":109.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":48585375482088,"sku":"XX-T12-UK","price":109.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":48585375514856,"sku":"XX-T12-DE","price":109.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":48585375547624,"sku":"XX-T12-AU","price":109.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":48585375580392,"sku":"XX-T12","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/0_efd1e6c3-2780-4d30-b746-bc5b2f2f53b0.jpg?v=1779698141"},{"product_id":"douk-audio-gaming-headphone-amplifier-with-ess9039-dac-chip","title":"Douk Audio Z1 Gaming Headphone Amplifier with ESS9039 DAC Chip","description":"\u003cdiv\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGaming-Optimized Audio Hub: Enjoy crystal-clear team voice and spatial audio for competitive gameplay. Z1 works seamlessly with PC, PS5, and mobile devices. Also functions as a high-fidelity headphone DAC for immersive music and everyday use.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHiFi Sound for Everyday Listening: Equipped with top-tier ESS9039Q2M DAC for ultra-low noise, wide dynamic range, and detailed sound reproduction. The 4.4mm balanced output delivers 430mW\/32Ω power with excellent channel separation for demanding headphones. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSupport for Pro-Grade Microphones: Connect dynamic or condenser mics via XLR or 3.5mm jacks, with built-in 48V phantom power. Use physical knobs for real-time mic volume and mute control. Perfect for voice chat, meetings, gaming, karaoke, or content creation.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eUSB Mixing with Voice Return: In USB input mode, Z1 lets you mix audio from USB, AUX, and mic inputs into one stream via the Mix button. The mixed signal is output through headphones, AUX out, and returned to the USB host for monitoring or routing. MIC OUT delivers only your voice.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eTactile Controls with Premium Build: Adjust treble, midrange, and bass with dedicated knobs, and fine-tune sound with 8 selectable DAC filter modes. Clear LED indicators and physical switches make source and mic control fast and intuitive. The aluminum chassis adds a touch of durability and desktop style.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp data-end=\"372\" data-start=\"50\"\u003e\u003cspan\u003e\u003cstrong data-end=\"155\" data-start=\"50\"\u003eQ: Why is there no sound from the 3.5 mm output when both 4.4 mm and 3.5 mm headphones are connected?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-end=\"158\" data-start=\"155\"\u003e\u003cspan\u003eA: The Z1 only supports one headphone output at a time. When both jacks are connected, the 4.4mm output takes priority. To use the 3.5mm headphone output, please make sure the 4.4mm headphone has been disconnected.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"473\" data-start=\"374\"\u003e\u003cspan\u003e\u003cstrong data-end=\"463\" data-start=\"374\"\u003eQ: Do tone, volume and filter controls simultaneously apply to all outputs on the Z1?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-end=\"466\" data-start=\"463\"\u003e\u003cspan\u003eA: Yes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"804\" data-start=\"475\"\u003e\u003cspan\u003e\u003cstrong data-end=\"558\" data-start=\"475\"\u003eQ: Why can't I use the microphone or Mix function when using the Optical input?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-end=\"561\" data-start=\"558\"\u003e\u003cspan\u003eA: This is normal. In Optical input mode, the Z1 works only as a DAC. All microphone-related functions (such as Mic input, Mix, and Mic Mute) are disabled in this mode. To use the microphone or mixing features, please switch to USB input mode.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1106\" data-start=\"806\"\u003e\u003cspan\u003e\u003cstrong data-end=\"877\" data-start=\"806\"\u003eQ: Why is there no microphone sound after connecting the AUX input?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-end=\"880\" data-start=\"877\"\u003e\u003cspan\u003eA: Please check whether the AUX cable is fully inserted and confirm it is a 4-pole (TRRS) cable. If a 3-pole (TRS) cable is used, the internal microphone circuit will be shorted and the microphone signal cannot be transmitted.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1496\" data-start=\"1108\"\u003e\u003cspan\u003e\u003cstrong data-end=\"1197\" data-start=\"1108\"\u003eQ: Why does the connection to my phone keep disconnecting or fail to stay recognized?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-end=\"1200\" data-start=\"1197\"\u003e\u003cspan\u003eA: The is usually caused by insufficient power from the PC-USB connection. This may happen when using a phone as the USB audio source or when connecting to a USB port on a computer. Please use a DC 5V\/≥2A external power supply for stable operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: Z1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio input: USB-C \/ Optical \/ AUX \/ 3.5mm\u0026amp;XLR Microphone\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio output: 3.5mm \u0026amp; 4.4mm headphone jack \/ AUX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChip: ESS9039Q2M\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMax. sampling rate\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePC-USB: PCM 48KHz\/16Bit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOptical: PCM 192KHz\/24Bit\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eRated output power\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e3.5mm headphone: 300mW\/32Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e4.4mm headphone: 430mW\/32Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: 20Hz-20KHz (±0.5dB)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTHD+N: 0.001%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: ≥110dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatched headphone impedance: 16-300Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAUX rated output level: 2V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eInput sensitivity\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAUX: 850mV\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eXLR MIC: 40mV\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e3.5mm MIC: 60mV\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eUSB\/Optical: 0dBFS\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eUSB compatible systems: \u003c\/span\u003e\u003cspan\u003eWindows\/macOS\/Linux\/Android\/iOS\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eTreble\/Mid\/Bass range:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBass:±10dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTreble\/Mid:±6dB\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMixing: \u003c\/span\u003e\u003cspan\u003eSupported (USB mode only)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMicrophone mute: \u003c\/span\u003e\u003cspan\u003eSupported (USB mode only)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFilter modes: \u003c\/span\u003e\u003cspan\u003e8 modes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eInput voltage: \u003c\/span\u003e\u003cspan\u003eDC 5V \/ ≥2A\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W*D*H): 160*118*40mm \/ 6.30*4.65*1.57in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePackage dimensions (W*D*H): \u003c\/span\u003e\u003cspan\u003e320*190*80mm \/ 12.59*7.48*3.14in\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNet weight: 655g \/ 1.44lb\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePackage weight: \u003c\/span\u003e\u003cspan\u003e1.51kg \/ 3.33lb\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePacking List\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* Z1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Metal Stand\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* DC 5V Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* USB Power Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* USB Data Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* 3.5mm AUX Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"Black \/ NE5532 \/ US","offer_id":48710402212072,"sku":"SUC-Z1-H-NE-US","price":219.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ NE5532 \/ UK","offer_id":48710402244840,"sku":"SUC-Z1-H-NE-UK","price":219.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ NE5532 \/ EU","offer_id":48710402277608,"sku":"SUC-Z1-H-NE-DE","price":219.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ NE5532 \/ AU","offer_id":48710402310376,"sku":"SUC-Z1-H-NE-AU","price":219.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ NE5532 \/ China","offer_id":48710402343144,"sku":"SUC-Z1-H-NE","price":219.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ MUSE01 \/ US","offer_id":48710402375912,"sku":"SUC-Z1-H-MUSE-US","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ MUSE01 \/ UK","offer_id":48710402408680,"sku":"SUC-Z1-H-MUSE-UK","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ MUSE01 \/ EU","offer_id":48710402441448,"sku":"SUC-Z1-H-MUSE-DE","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ MUSE01 \/ AU","offer_id":48710402474216,"sku":"SUC-Z1-H-MUSE-AU","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ MUSE01 \/ China","offer_id":48710402506984,"sku":"SUC-Z1-H-MUSE","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Silver \/ NE5532 \/ US","offer_id":48710402539752,"sku":"SUC-Z1-S-NE-US","price":219.99,"currency_code":"USD","in_stock":false},{"title":"Silver \/ NE5532 \/ UK","offer_id":48710402572520,"sku":"SUC-Z1-S-NE-US","price":219.99,"currency_code":"USD","in_stock":false},{"title":"Silver \/ NE5532 \/ EU","offer_id":48710402605288,"sku":"SUC-Z1-S-NE-US","price":219.99,"currency_code":"USD","in_stock":false},{"title":"Silver \/ NE5532 \/ AU","offer_id":48710402638056,"sku":"SUC-Z1-S-NE-US","price":219.99,"currency_code":"USD","in_stock":false},{"title":"Silver \/ NE5532 \/ China","offer_id":48710402670824,"sku":"SUC-Z1-S-NE-US","price":219.99,"currency_code":"USD","in_stock":false},{"title":"Silver \/ MUSE01 \/ US","offer_id":48710402703592,"sku":"SUC-Z1-S-MUSE-US","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Silver \/ MUSE01 \/ UK","offer_id":48710402736360,"sku":"SUC-Z1-S-MUSE-UK","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Silver \/ MUSE01 \/ EU","offer_id":48710402769128,"sku":"SUC-Z1-S-MUSE-DE","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Silver \/ MUSE01 \/ AU","offer_id":48710402801896,"sku":"SUC-Z1-S-MUSE-AU","price":219.99,"currency_code":"USD","in_stock":true},{"title":"Silver \/ MUSE01 \/ China","offer_id":48710402834664,"sku":"SUC-Z1-S-MUSE","price":219.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_e46e1a79-0923-46a3-9262-c41d8926c4e1.jpg?v=1783405666"},{"product_id":"ampapa-h1-class-a-headphone-amplifier-with-4000mw-output-trs-rca-preamp","title":"[Pre-Sale] Ampapa H1 Class A Headphone Amplifier 4000mW with TRS\/RCA Preamp","description":"\u003ch4 class=\"STYLE2\"\u003eFeatures\u003c\/h4\u003e\n\u003cp class=\"STYLE2\"\u003e \u003c\/p\u003e\n\u003cul class=\"STYLE2\"\u003e\n\u003cli\u003ePower for Demanding Headphones: Built around a discrete Class A output stage, Ampapa H1 delivers strong current drive and up to 4000mW from its balanced high-gain output, giving 16–600Ω headphones wider headroom, steadier control and smoother dynamics. 4.4mm, 4-pin XLR and 6.35mm outputs fit more full-size HiFi headphone setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul class=\"STYLE2\"\u003e\n\u003cli\u003ePreamp Control for Your Audio System: With 2×RCA and 1×TRS analog I\/O, H1 keeps your DAC, CD player and streamer connected for simple source selection, while its preamp outputs can stay linked to multiple power amps or active speakers for system expansion. Designed to complement Ampapa Q1 and D1, it adds tube preamp control for a more unified stack.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul class=\"STYLE2\"\u003e\n\u003cli\u003eCustom ECC83 Tube Character: Made with exclusive PSVANE × Douk Audio ECC83 tubes, H1 brings a warmer, richer tube character to both headphone listening and preamp output. The custom tube set gives H1 a more distinctive out-of-box identity, while tube rolling support leaves room to fine-tune the sound later.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul class=\"STYLE2\"\u003e\n\u003cli\u003eEffortless Control Across Your Setup: Low, mid and high gain help H1 match sensitive headphones, everyday models and harder-to-drive pairs with less guesswork. HP, Line and HP+Line output modes cover headphone, preamp output or both, while the 1.5-inch OLED keeps key status clear and 12V Trigger helps compatible gear power on\/off together.  \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"STYLE2\"\u003eBuilt for Refined HiFi Use: Japan NJW1195 volume IC keeps channel balance stable, while pluggable op-amps leave room for sound tuning. 0.04% THD+N and ≥113dB SNR support clean signal performance, and the low-noise relays, isolated tube power shielding and CNC aluminum chassis add quieter operation and lasting build quality for demanding headphone listeners or serious HiFi users.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eParameters\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan class=\"STYLE14\"\u003e\u003cspan class=\"STYLE15\"\u003e\u003cspan class=\"STYLE16\"\u003e\u003cstrong data-end=\"104\" data-start=\"94\"\u003eBrand:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAmpapa\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"124\" data-start=\"114\"\u003eModel:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eH1\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"148\" data-start=\"131\"\u003eAudio Inputs:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e2 × RCA Inputs \/ 1 × TRS Input\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"201\" data-start=\"183\"\u003eAudio Outputs:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e2 × RCA Outputs \/ 1 × TRS Output\u003c\/li\u003e\n\u003cli\u003e4-Pin XLR \/ 6.35mm \/ 4.4mm Headphone Outputs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"295\" data-start=\"285\"\u003eTHD+N:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e0.04%\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"313\" data-start=\"305\"\u003eSNR:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e≥113dB\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"347\" data-start=\"324\"\u003eFrequency Response:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e20Hz–20kHz (±0.7dB)\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"391\" data-start=\"369\"\u003eInput Sensitivity:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eRCA: 1V ; TRS: 2V\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong\u003eRated Output Level (by Gain): \u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"456\" data-start=\"441\"\u003eRCA Output:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eHigh-3.0V ; Mid-2.1V ; Low-1.5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"525\" data-start=\"510\"\u003eTRS Output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHigh-6.0V ; Mid-4.3V ; Low-3.0V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli class=\"STYLE2\" data-end=\"615\" data-start=\"584\" data-section-id=\"1f8qvx3\"\u003e\n\u003cstrong\u003eRated Headphone Output Power (by Gain):\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"637\" data-start=\"617\"\u003eBalanced Output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHigh-4W ; Mid-2W ; Low-1W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-end=\"709\" data-start=\"685\"\u003eSingle-Ended Output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHigh-1000mW ; Mid-500mW ; Low-250mW\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"799\" data-start=\"767\"\u003eMatched Headphone Impedance:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e16–600Ω\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"854\" data-start=\"838\"\u003ePower Input:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eDC 12V \/ ≥2A, 5.5 × 2.1mm\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong\u003eDimensions (W*D*H)\u003c\/strong\u003e: 155 × 124 × 42mm \/ 6.10 × 4.88 × 1.65in \u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"907\" data-start=\"884\"\u003ePackage Dimensions:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e268 × 192 × 95mm \/ 10.55 × 7.56 × 3.74in\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong\u003eNet Weight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e750g \/ 1.64lb\u003c\/li\u003e\n\u003cli class=\"STYLE2\"\u003e\n\u003cstrong data-end=\"971\" data-start=\"952\"\u003ePackage Weight:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e1.28kg \/ 2.82lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"STYLE3\"\u003ePacking List\u003c\/p\u003e\n\u003cdiv class=\"STYLE2\"\u003e\n\u003cul\u003e\n\u003cli\u003e1 × H1\u003c\/li\u003e\n\u003cli\u003e2 × ECC83 Tubes\u003c\/li\u003e\n\u003cli\u003e1 × DC 12V Power Adapter\u003c\/li\u003e\n\u003cli\u003e1 × 6.35mm to 3.5mm Adapter\u003c\/li\u003e\n\u003cli\u003e1 × 3.5mm Trigger Cable\u003c\/li\u003e\n\u003cli\u003e1 × Certificate\u003c\/li\u003e\n\u003cli\u003e1 × Warranty\u003c\/li\u003e\n\u003cli\u003e1 × Cleaning Cloth\u003c\/li\u003e\n\u003cli\u003e1 × User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFAQs\u003c\/p\u003e\n\u003cdiv class=\"qa-container\"\u003e\n\u003cdiv class=\"qa-question\"\u003e\n\u003cdiv class=\"icon question-icon\"\u003eQ: Can I use multiple headphone outputs at the same time?\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa-answer\"\u003e\n\u003cdiv class=\"icon answer-icon\"\u003eA: \u003cspan class=\"STYLE15\"\u003eThe 6.35mm output has priority. When a 6.35mm plug or adapter is inserted, the 4.4mm and 4-pin XLR outputs are disabled. For best performance, we recommend using one headphone output at a time.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa-container\"\u003e\n\u003cdiv class=\"qa-question\"\u003e\n\u003cdiv class=\"icon question-icon\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"icon question-icon\"\u003eQ: \u003cspan class=\"STYLE15\"\u003eHow should I choose the gain setting?\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa-answer\"\u003e\n\u003cdiv class=\"icon answer-icon\"\u003eA: \u003cspan class=\"STYLE15\"\u003eUse Low Gain for sensitive or low-impedance headphones, Mid Gain for most daily listening, and High Gain for high-impedance or harder-to-drive headphones. Start low, then increase the gain if more volume or drive is needed.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa-container\"\u003e\n\u003cdiv class=\"qa-question\"\u003e\n\u003cdiv class=\"icon question-icon\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"icon question-icon\"\u003eQ: \u003cspan class=\"STYLE15\"\u003eCan I replace the tubes?\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa-answer\"\u003e\n\u003cdiv class=\"icon answer-icon\"\u003eA: \u003cspan class=\"STYLE15\"\u003eYes. H1 uses ECC83 tubes and supports compatible tube rolling with 12AX7, 7205, 6N4 and 5751 tubes. Always power off the H1 before replacing tubes, and confirm compatibility before trying other tube models.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa-container\"\u003e\n\u003cdiv class=\"qa-question\"\u003e\n\u003cdiv class=\"icon question-icon\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"icon question-icon\"\u003eQ: \u003cspan class=\"STYLE15\"\u003eCan I replace the op-amps?\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa-answer\"\u003e\n\u003cdiv class=\"icon answer-icon\"\u003eA: \u003cspan class=\"STYLE15\"\u003eYes. H1 uses two pluggable LME49720 op-amps and supports replacement with standard DIP-8 dual op-amps such as OPA2604, OPA2134 and MUSES02. Please power off the H1 before replacement and check chip orientation carefully.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa-container\"\u003e\n\u003cdiv class=\"qa-question\"\u003e\n\u003cdiv class=\"icon question-icon\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"icon question-icon\"\u003eQ: \u003cspan class=\"STYLE15\"\u003eWhat power adapter should I use?\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qa-answer\"\u003e\n\u003cdiv class=\"icon answer-icon\"\u003eA: \u003cspan class=\"STYLE15\"\u003ePlease use the included DC 12V\/2A power adapter. If using another adapter, choose a high-quality DC 12V adapter rated at 2A or higher. Do not use an adapter with excessive voltage.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"STYLE3\"\u003e \u003c\/p\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":48735679742184,"sku":"SUC-H1-US","price":179.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":48735679774952,"sku":"SUC-H1-UK","price":179.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":48735679807720,"sku":"SUC-H1-DE","price":179.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":48735679840488,"sku":"SUC-H1-AU","price":179.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":48735679873256,"sku":"SUC-H1","price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_bf5f9db8-3dcd-410d-b973-a16af285dd95.jpg?v=1783930279"}],"url":"https:\/\/doukaudibestseller.com\/en-ca\/collections\/headphone-amplifier.oembed?page=2","provider":"Douk Audio","version":"1.0","type":"link"}