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.Specification:Headphone amplifier output maximum power: 100mW / 32 ohmsColor: Black / Silver (Optional)Power supply: DC5V1AFrequency response range: 20Hz-20kHz (3dB)Signal to Noise Ratio (SNR): 105dBTreble adjustment range: 6dBBass adjustment range: 6dBSampling rate: USB-24bit/96kHz, Coaxial/Optical-24bit/192kHzControl mode: tact switch + potentiometer knobInput interface: fiber / coaxial; PC-USBOutput interface: gold-plated for RCA; 3.5MM headphone jackPackage List:Decoder *1Charging cable *1Fiber optic cable *1Data line *1Instruction manual*1.