Sony A845 Operation Manual page 97



Using the Noise Canceling Function

Hint
 You can change between [External Input Mode] and [Quiet Mode] (  p. 98) by
pressing the  button.
 If you disconnect the supplied audio input cable, the Noise Canceling function enters
[Quiet Mode] (  p. 98) automatically.
Note
 Some in-flight entertainment systems may not be connectable to the player.
 When connecting to an audio device, plug the supplied audio input cable into the
headphone jack of the device. Do not plug it into the LINE OUT jack.