Features: Adopt MS8412+SA9023+NE5532+97220 chipset: better performance. DAC height Decoding: Enhances digital sound. With headphone amp function: support 3.5MM headphones. High and low sound adjustment: more convenient to use. Fiber/Coax + PC-USB input: High transmission rate. Gold-plated for RCA output: More stable operation. S pecification: Headphone amplifier output maximum power: 100mW / 32 ohms Color: Black / Silver (Optional) Power supply: DC5V1A Frequency response range: 20Hz-20kHz (±3dB) Signal to Noise Ratio (SNR): ≥105dB Treble adjustment range: ±6dB Bass adjustment range: ±6dB Sampling rate: USB-24bit/96kHz, Coaxial/Optical-24bit/192kHz Control mode: tact switch + potentiometer knob Input interface: fiber / coaxial; PC-USB Output interface: gold-plated for RCA; 3.5MM headphone jack P ackage List: Decoder *1 Charging cable *1 Fiber optic cable *1 Data line *1 Instruction manual*1 .