Basic Mixing : Inserts
 
Inserts
 
Track Output Format and Plug-Ins
Plug-In Formats
Pro Tools | First lets you insert up to four plug-ins on each audio, Auxiliary Input, Master Fader, or Instrument track.
Inserts provide the following features:
Plug-Ins inserts route the signal from the track through the effect of your choice, and automatically return it to the same track.
Some Instrument plug-ins accept audio from the track input (letting you use them as processing plug-ins).
Inserts on audio, Auxiliary Input, and Instrument tracks are pre-fader.
Inserts on Master Faders are post-fader.
Inserts can be bypassed or made inactive.
Most plug-in controls are fully automatable.