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.

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　　Douk Audio ST-01 Bluetooth 5.0 Tube Amplifier VU Meter USB DAC COAX/OPT Amp 100W

　　Item description

　　Shipping from USA Warehouse, you will receive it within 1-6 bz days.

　　Warm tips:

　　In addition to retaining all the original functions, ST-01 PRO is the latest upgraded version of ST-01:

　　1. Add a M1 button on the remote control of ST-01 and ST-01 PRO, to turn on and off the function that it will auto enter mute mode when there is no signal input for 10S.2. ST-01 PRO supports U-disk input to play lossless formats music.3. Add sensitivity adjustment of VU meter on its bottom, easy to set and match better with different input signals.4. Add three decorative golden circles around tubes and VU meter, looks more exquisite and luxury.

　　Features

　　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.

　　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.

　　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.

　　Warm tips:

　　1. 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. 2. Pluggable tube socket, default 6K4 vacuum tubes, can be replaced by 6J1 / 6J2 / 6*1n / 5654 / 6J4 / 6J5 / 6K5 / 6A2 etc.3. Default comes with 24V/5A power adapter enough for common use, if you want higher power output to drive your speaker better, please click LINK to buy DC 36V/5A power adapter.

　　Parameters

　　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/24BitBluetooth input: 48KHz/24BitCOAX/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: 661g / 1.46lb

　　Package weight: 1.4kg / 3.09lb

　　Packing List

　　1*ST-01 PRO Amplifier

　　1*DC 24V Power Adapter

　　1*Remote Control (without 2*AAA batteries)

　　1*USB Cable

　　1*Bluetooth Antenna

　　1*User Manual

　　Payment

　　Fast Shipping

　　Return Policy

　　About us

　　Contact us

　　Payment

　　Safe and secure payment by PayPal.

　　Fast Shipping

　　The items are located in US, and will be shipped within 1 working day, 2-6 working days to deliver.

　　Return Policy

　　Free Return Within 30 Days

　　We provide free return with 30 days for all items you bought on eBay, full refund and return shipping will be provided.

　　1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes).

　　If you are satisfied with our products and service please leave a 5-star .

　　Feedback is very important to us just like our lives, please DO contact us before you leave a neutral

　　or negative

　　feedback, we will provide better solutions until you are satisfied.

　　About us

　　Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc.  As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable.  We will spare no efforts to bring great products and service for customers and extremely to improve our customers’ listening experience.

　　Contact us

　　Please don't hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at:   Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM  During holiday, please allow us to response you early next week. Please don't leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation.

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