{"product_id":"hifi-bluetooth-5-0-digital-power-amplifier-stereo-2-4-channel-audio-amp-50w-4","title":"Douk Audio M4 HiFi Bluetooth 5.0 Digital Amplifier Stereo 4 Channel Multi-room Audio Amp 50W×4","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\n\u003cul\u003e\n\u003cli\u003eOne group of stereo RCA (CH3 and CH4) can be used as audio input or output by switching the selector, to acheive different demands:\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cblockquote\u003e\n\u003cdiv style=\"text-align: left;\" id=\"pastingspan1\"\u003eCH3\/CH4 as audio output: 4 groups of speaker sockets can connect to 2 pair of speakers. Besides connect to active speakers, CH3\/CH4 also can connect to another M4 amplifier to connect more speakers, in this way multiple amplifiers and multiple speakers can be connected in turn, to achieve one audio signal be shared in several rooms.\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003eCH3\/CH4 as audio input: one input corresponds to one output (ex. CH1 speaker socket will output the audio signal that CH1 inputs), which means that two groups of stereo audio signal (or 4 groups of mono audio signal) can be input at the same time.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/blockquote\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\n\u003cul\u003e\n\u003cli\u003eSupporting wired 2 groups of stereo RCA and wireless Bluetooth 5.0 input, compatible with most common audio device such as phones, computers, TVs, MP3, TV, CD players etc. With U-disk input, it can be used as a digital music player, supporting MP3, WAV, APE, FLAC and WMA lossless formats.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eWith 4 groups of speaker sockets output, they can output at the same time and each channel with independent volume control. Its max output power can reach 50W×4, and equipped with high-quality 24V\/4.5A power supply, enough to drive most home speakers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eReasonable circuit layout, concise wiring and high-quality components to ensure HiFi clear sound and long time stable work. Separate design of small and \u003cspan\u003e\u003cspan\u003elarge signal circuit for better circuit protection. \u003c!-- x-tinymce\/html --\u003eBluetooth 5.0 version with high-gain antenna, ensure more stable and faster transmission.\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePropersize with exquisite appearance, aluminum alloy case is CNC machined and with anodizing process, more fashionable and durable, very suitable for home, office 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\u003cdiv\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eNotice:\u003c\/strong\u003e U-disk input is prior to Bluetooth input, so please make sure U-disk has been pulled out if you want Bluetooth input.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eParameters\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003eModel: Douk Audio M4\u003c\/li\u003e\n\u003cli\u003eChannel: 2.0 \/ 4.0\u003c\/li\u003e\n\u003cli\u003eAudio input: Bluetooth\/Stereo RCA\/U-disk\u003c\/li\u003e\n\u003cli\u003eAudio output: speaker sockets\u003c\/li\u003e\n\u003cli\u003eU-disk support format: MP3, WMA, APE, FLAC, WAV...\u003c\/li\u003e\n\u003cli\u003eU-disk capacity: max 32G\u003c\/li\u003e\n\u003cli\u003eBluetooth version: 5.0\u003c\/li\u003e\n\u003cli\u003eSpeaker impedance: 4-8Ω\u003c\/li\u003e\n\u003cli\u003eMax output power: 50W*4 (4Ω load)\u003c\/li\u003e\n\u003cli\u003eSNR: ≥98dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.775V\u003c\/li\u003e\n\u003cli\u003eTHD: 0.05%(1kHz 1W)\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 20Hz-20KHz(±3dB)\u003c\/li\u003e\n\u003cli\u003eWorking voltage: DC 12-24V\u003c\/li\u003e\n\u003cli\u003eColor: Black\u003c\/li\u003e\n\u003cli\u003eDimensions(W*D*H): 128*134*33mm \/ 5.04*5.28*1.30in\u003c\/li\u003e\n\u003cli\u003eNet weight: 533g \/ 1.18lb\u003c\/li\u003e\n\u003cli\u003ePackage weight: 1100g \/ 2.43lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003ePacking List\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e1*M4 Amplifier\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e1*24V\/4.5A Power Supply\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e1 Set*Raw Cable Speaker Jacks\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e1*Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"doukaudio","offers":[{"title":"US","offer_id":47198649778408,"sku":"SUC-M4-24V-US","price":79.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47406895038696,"sku":"SUC-M4-24V-UK","price":79.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47406895071464,"sku":"SUC-M4-24V-DE","price":79.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47406895104232,"sku":"SUC-M4-24V-AU","price":79.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47406895137000,"sku":"SUC-M4-24V","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/SUC-M4-newlogo_7.jpg?v=1703569686","url":"https:\/\/doukaudibestseller.com\/products\/hifi-bluetooth-5-0-digital-power-amplifier-stereo-2-4-channel-audio-amp-50w-4","provider":"Douk Audio","version":"1.0","type":"link"}