1: Dual-channel CS43131 flagship decoding chip. 2: The decoder supports 3.5mm headphone jack and 4.4mm headphone jack. 3: The side button supports volume adjustment. 4: It has a high gain mode and provides a powerful thrust of up to 2Vrms. 5: Ultra-low noise power supply and high-precision femtosecond crystal oscillator are . 6: (volume +, play/pause, volume -) button compatible design, convenient for listening to music control. 7: Support Win7/8/10/11, Os, Android, ios systems. Win7/8/ must install a dedicated ASIO driver, and Android devices must support OTG and UAC2.0. Model: HA03 Decoding capability: PCM 32Bit/384kHz/DSD256 Frequency response: 20-80Khz Matched output impedance: 16-600 Output power: 63mW@32 Signal-to-noise ratio : (3.5mm,120dB)/(4.4mm,125dB) Dynamic range DNR: (3.5mm,120dB)/(4.4mm,125dB) Distortion +N: (3.5mm,-100dB)/(3.5mm,-105dB) Color: Space gray Material: aluminum alloy Package Contents: 1 x HA03 Hi-Fi decoder 1 x USB-C single crystal copper silver-plated cable 1 x USB-A to USB-C adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.