... and time again.Experience it Item: B-001 , Desktop stereo solution Digital-to-Analog converter, DAC, headphone amplifier, item ... Burr-Brown SRC4392, PCM1792a DAC chips,PCM2707 USB chips. Stereo power amplifier, item AMP1Frequency Response :20Hz-20kHz +- 0.25dB ... . Besides, the power amplifier and speaker provided offer you a complete stereo solution. Listening is believing, sample purchase available. ...