Turn on input monitoring for audio tracks
You can turn on input monitoring to monitor audio tracks that are not enabled for recording. This is useful for setting audio levels or practicing parts before you commit to recording.
Tip: You can leave input monitoring turned on before, after, and during recording. When input monitoring is on, the Record Enable button and the Auto Input Monitoring feature do not affect software monitoring—that is, you can always hear incoming audio signals. When you’re punch recording, however, you should use Auto Input Monitoring rather than the Input Monitoring buttons. For more information about Auto Input Monitoring, see Punch in and out of audio recordings.
Turn on input monitoring for an audio track
Click the Input Monitoring button (with the “I” icon) in the track header.
Click the Input Monitoring button again to turn off input monitoring for the track.
Note: Input monitoring always involves some latency. The amount of latency depends on the audio hardware and the driver settings. In certain configurations, it may be best not to turn on input monitoring, to obtain the best possible timing. Route the signal you want to record directly to headphones or a monitoring amplifier—and to the audio interface inputs, for recording. You won’t accidentally overdrive your A/D converters, because the input level meters display a clipping warning if an overload occurs.