... 6.35 for two headphone plug;TI’s main power amplifier with a noise 5uVrms; low distortion 0.00014%THD+N ... : is sealed relays to do the amplifier output protection; sealed with low-noise ALPS potentiometer.Internal audio buffer amplification BB OPA2134: FET ... .APPLE base, achieve iPod, iPhone the line out of output amplifier, charging device, connected to the computer through USB synchronization data ...