Douk Audio ST-01 PRO HiFi Bluetooth 5.0 Tube Amplifier USB DAC COAX/OPT Digital Audio Amp w/VU Meter

Warm tips: In addition to retaining all the original functions, ST-01 PRO is the latest upgraded version of ST-01:1. ST-01 PRO 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. 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 p