• Unique and amazing combination: integrated ST-01 PRO amplifier with VU meter into whole in such a mini size, the pointer dancing in the warm light with strong vintage feelings when enjoy HiFi music, dynamically decorates the audio system space.
• HiFi clear sound with tone control: resonable circuit and concise wiring, adopts vacuum tubes to soften the sound and filter out the digital feelings, sounds warm and sweet without noise. Also with treble and bass knobs to adjust one's own preferable sound styles, presents HiFi music with rousing highs and deep lows.
• Unleash Hi-Res with XMOS XU316: Asynchronous USB processing handles PCM up to 32-bit/768kHz and DSD512, delivering high-rate audio for capable DACs with greater clarity and stability. I2S Strong output power and special AUX output: use TI's classic power amp IC, each channel can output 100W(4Ω) and easily to drive all 3-8Ω passive speakers, adds 3.5mm AUX output easy to connect another amplifier or active speaker / subwoofer to build multiple channel system and enjoy wonderful home theater experience.carries the highest rates beyond standard S/PDIF bandwidth, keeping your digital front end from becoming the bottleneck.
• With multiple digital audio inputs: Bluetooth 5.0 / USB / Coaxial / Optical / stereo RCA, compatible with most audio device such as phones, computers, tablets, TVs, TV, CD players etc. The perfect combination of DAC and amplifier, very suitale for audiophiles who have various audio devices.
• Practical functions to simplify use: with full-function remote control, all settings can be achieved from the distance; with input selection and indicators, clearly to show the working status in real time; aluminum alloy case is specially designed, cool and unique to decorate your desktop space.

• Brand: Douk Audio
• Model: ST-01 PRO
• Audio input: Bluetooth / USB (PC-USB) / Coaxial / Optical / RCA / U-disk
• Audio output: Banana speaker jacks / 3.5mm AUX
• Max output power: 100W+100W (4Ω)
• Matched impedance: 3-8Ω
• Sampling rate supported:
  USB input: 96KHz/24Bit
  Bluetooth input:48KHz/24Bit
  COAX/OPT inputs: 192KHz/24Bit
• Supported formats of U-disk: MP3 / WAV / WMA / FLAC / APE
• Max capacity of U-disk: 64G
• Treble / Bass adjustment range: ±6dB
• System PC-USB supported: XP/W7/W8/W10/MAC/ Linux
• Frequency response: 20Hz-20kHz(±1dB)
• S/N ratio: ≥98dB
• THD: 0.07%
• Working voltage: DC 18-30V
• Dimensions(W*D*H): 115*98*54mm / 4.53*3.86*2.13in
• Package dimensions(W*D*H): 295*225*85mm / 11.61*8.56*3.35in
• Net weight(ST-01 PRO): 661g / 1.46lb
• Package weight: 1.4kg / 3.09lb

User Manual of Douk Audio SUC-ST-01-PRO

FAQs

Q: What upgrades does the ST-01 PRO offer?
A:  In addition to retaining all the original functions of the ST-01, the ST-01 PRO adds U-disk input for lossless music playback, VU meter sensitivity adjustment on the bottom for better matching with different input signals, and three decorative golden circles around the tubes and VU meter for a more exquisite and luxurious look.

Q: What upgrades does the PRO version offer?​​
A: The upgraded ST-01 PRO adds U-disk input for lossless formats, adjustable VU meter sensitivity for signal matching, and decorative gold rings for a premium look. Enhances usability and aesthetics.

Q: How does the VU meter improve my setup?​​
A: It dynamically dances to music under warm lighting, creating vintage vibes and enhancing room decor. Perfect for immersive HiFi experiences.

Q: Can I customize the sound output?​​
A: Yes! Use treble/bass controls (±6dB) and vacuum tubes to warm audio, eliminating digital harshness. Ideal for personalized, sweet-sounding HiFi with deep lows and clear highs.

Q: What speakers work with this amplifier?​​
A: Drives all 3-8Ω passive speakers with 200W total power. Includes AUX output for connecting subs or additional amps, enabling easy multi-channel home theater setups

Q: Which devices connect to its inputs?​​
A: Compatible with phones, PCs, TVs, and more via Bluetooth 5.0, USB, coaxial/optical, or RCA. Supports high-res audio up to 192KHz/24Bit for audiophiles.