Douk Audio ST-01 PRO 200W Bluetooth Vacuum Tube Amplifier USB DAC Coaxial Optical Inputs VU Meter

The Douk Audio ST-01 PRO is an upgraded 2-channel vacuum tube amplifier designed for home theater and stereo speaker systems, delivering 200W (100W per channel at 4Ω). This versatile amplifier combines a high-fidelity sound experience with a vintage aesthetic, featuring a dynamic VU meter and tone controls.

Key Features:
* Upgraded ST-01 PRO Version: Includes U-disk input for lossless music playback (MP3/WAV/WMA/FLAC/APE up to 64G), adjustable VU meter sensitivity, and enhanced aesthetic with decorative golden circles.
* Unique VU Meter Design: A dynamically dancing pointer in warm light provides a vintage feel, enhancing your audio system's visual appeal.
* HiFi Sound with Tone Control: Utilizes vacuum tubes to soften digital sound, providing a warm, sweet, and noise-free audio experience. Features independent treble and bass adjustment (±6dB) for personalized sound.
* Powerful Output & Versatile Output Options: Delivers 100W per channel (4Ω) using TI's classic power amp IC, driving 3-8Ω passive speakers with ease. Includes a 3.5mm AUX output for connecting additional amplifiers, active speakers, or subwoofers for a multi-channel setup.
* Multiple Digital Audio Inputs: Supports Bluetooth 5.0, USB (PC-USB), Coaxial, Optical, and stereo RCA inputs, ensuring compatibility with a wide range of devices like phones, computers, tablets, TVs, and CD players. Functions as a perfect DAC and amplifier combination.

Specifications:
* Max Output Power: 100W + 100W (4Ω)
* Matched Impedance: 3-8Ω
* Sampling Rate Support: USB 96KHz/24Bit, Bluetooth 48KHz/24Bit, COAX/OPT 192KHz/24Bit
* PC-USB System Support: XP/W7/W8/W10/MAC/Linux
* Frequency Response: 20Hz-20kHz(±1dB)
* Signal-to-Noise Ratio: ≥98dB
* Total Harmonic Distortion (THD): 0.07%
* Working Voltage: DC 18-30V
* Dimensions (W*D*H): 115*98*54mm (4.53*3.86*2.13in)