Douk Audio ST-01 PRO 200W Bluetooth Amplifier, 2 Channel Vacuum Tube Power Amp with USB DAC/Coaxial Optical Inputs/VU Meter/Treble Bass Control for Home Theater/Stereo Speakers (Upgrade Version)

Heat Ideas
1. PC-USB enter additionally helps cell phones that with OTG features, however Android system wants OTG cable and IOS system wants digicam equipment, please put together by your self.
2. Pluggable tube socket, default 6K4 vacuum tubes, will be changed by 6J1 / 6J2 / 6*1n / 5654 / 6J4 / 6J5 / 6K5 / 6A2 and so forth.

Parameters
Model: Douk Audio
Mannequin: ST-01 PRO
Audio enter: Bluetooth / USB (PC-USB) / Coaxial / Optical / RCA / U-disk (solely ST-01 PRO supported)
Audio output: Banana speaker jacks / 3.5mm AUX
Max output energy: 100W+100W (4Ω)
Matched impedance: 3-8Ω
Sampling charge supported:
USB enter: 96KHz/24Bit
Bluetooth enter: 48KHz/24Bit
COAX/OPT inputs: 192KHz/24Bit
Supported codecs of U-disk: MP3 / WAV / WMA / FLAC / APE
Max capability of U-disk: 64G
Treble / Bass adjustment vary: ±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
Bundle dimensions(W*D*H): 295*225*85mm / 11.61*8.56*3.35in
Web weight: 661g / 1.46lb
Bundle weight: 1.4kg / 3.09lb

Packing Listing
1*ST-01 PRO Amplifier
1*DC 24V Energy Adapter
1*Distant Management
1*USB Cable
1*Bluetooth Antenna
1*Consumer Handbook

Full Upgraded Model of ST-01: 1. Helps U-disk enter to play lossless codecs music. 2. Add sensitivity adjustment of VU meter on its backside, simple to set and match higher with completely different enter indicators. 3. Add three ornamental golden circles round tubes and VU meter, seems to be extra beautiful and luxurious.
Distinctive and wonderful mixture: With VU meter into complete in such a mini measurement, the pointer dancing within the heat mild with robust classic emotions when get pleasure from HiFi music, dynamically decorates the audio system area.
HiFi clear sound with tone management: resonable circuit and concise wiring, adopts vacuum tubes to melt the sound and filter out the digital emotions, sounds heat and candy with out noise. Additionally with treble and bass knobs to regulate one’s personal preferable sound types, presents HiFi music with rousing highs and deep lows.
Sturdy output energy and particular AUX output: use TI’s traditional energy amp IC, every channel can output 100W(4Ω) and simply to drive all 3-8Ω passive audio system, provides 3.5mm AUX output simple to attach one other amplifier or energetic speaker / subwoofer to construct a number of channel system and revel in fantastic residence theater expertise.
With a number of digital audio inputs: Bluetooth 5.0 / USB / Coaxial / Optical / stereo RCA, appropriate with most audio system similar to telephones, computer systems, tablets, TVs, TV, CD gamers and so forth. The proper mixture of DAC and amplifier, very suitale for audiophiles who’ve varied audio units.