SMSL M6 32Bit/384KHz DAC USB Optical Decoder,Digital to Analog Converter with Headphone Amplifier Silver Supports up to 32bit 384KHZ a high cost decoder for decoding amp machine - M6 Inputs include USB, fiber optic and coaxial. Outputs include RCA analog outputs and headphone jack 6.35. USB asynchronous transfer up to 32bit / 384kHz.