Assigning a Default Audio Output Preset for New Sequences
If you use a particular audio output preset regularly, you can make it the default audio
output preset for all new sequences by choosing it in the Audio Outputs tab of the
User Preferences window.
To change the default audio output preset assigned to all new sequences:
Choose Final Cut Pro > User Preferences, then click the Audio Outputs tab.
Select an Audio Output preset from the Presets list by clicking in the column next to
the preset’s name.
The selected audio output preset is automatically assigned to all new sequences
Assigning Output Channels and External Audio Monitors