Feature:1. USB DAC and Tube Headphone Amplifier: The MH-02 is a small USB decoding tube headphone amplifier that functions as a USB DAC and tube headphone amplifier, providing users with audio decoding capabilities.2. High Sampling Rate Support: Supports a maximum sampling rate of PCM 32bit or 384kHz and DSD256, utilizing the high-spec CS43131 DAC chip to deliver clearer and higher quality analog signals for an enhanced listening experience.3. Tube Preamp and Transistor Class A Buffer: Equipped with dual 6J1 tubes in the front preamp for delicate and smooth audio processing, a transistor Class A buffer in the rear amplifier with strong load capacity to drive various headphones effortlessly.4. AUX Output with Tube Processing: Features an AUX output that is processed through tubes and controllable via the volume knob, allowing for easy connection to active speakers and enhancing the overall sound quality of your speaker setup.5. 12V DC Power Input: Powered by a 12V DC input, which not only maximizes the amplifier's capabilities but also significantly reduces the weight and size of the device, making it more lightweight and portable for convenient use.Specification:Specifications:Power Supply: DC 12V or 2ACompliant OS: Compatible With for Win, for Linux, for Os X, for Android SystemsAmpling Rate Support: PCM 16-32Bit or 44.1KHz-384KHz, DSD64-256Output Power: 1300MW (32 Load)Frequency Response: 10Hz-60KHz(0.5dB)Gain: and12 or 18dBTHDandN: 0.8 percent (1KHz, 32 Load)S or N: 118dBCrosstalk: 70dBItem Size: Approx. 12x7.8x4.0cm or 4.72x3.07x1.57inItem Weight: Approx. 350g or 12.34ozPackage Size: Approx. 13x11x7cm or 5.12x4.33x2.75inPackage Weight: Approx. 450g or 15.87oz.Package List:TT-V12011