Douk Audio St-01 Pro Bluetooth 5.0 Tube and similar items

Douk Audio St-01 Pro Bluetooth 5.0 Tube Amplifier Vu Meter Usb Dac Coax/Opt Amp. 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. Parameters Brand: Douk Audio Model: ST-01 PRO Audio input: Bluetooth / USB (PC-USB) / Coaxial / Optical / RCA / U-disk (only ST-01 PRO supported) Audio output: Banana speaker jacks / 3.5mm AUX Max output power: 100W+100W (4?) Matched impedance: 3-8? 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: 661g / 1.46lb Package weight: 1.4kg / 3.09lb Packing List 1*ST-01 PRO Amplifier 1*DC 24V Power Adapter 1*Remote Control 1*USB Cable 1*Bluetooth Antenna 1*User Manual Product Features Full Upgraded Version of ST-01: 1. Supports U-disk input to play lossless formats music. 2. Add sensitivity adjustment of VU meter on its bottom, easy to set and match better with different input signals. 3. Add three decorative golden circles around tubes and VU meter, looks more exquisite and luxury. Unique and amazing combination: 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(4?) and easily to drive all 3-8? 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. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!