SMSL SD-1955 DIR9001 AD1955 DAC Optical Coaxial Decoder & Power Adapter Black NE Data input: 1,usb 2 ,Optical , 3,coaxial sample rate : 44.1K-96K/16Bit-24Bit AO: Stereo output (3V RMS) dynamic: &gt;120db Distortion :0.0005% Power supply: DC9V