External Effects
You can integrate external effect devices into the sequencer signal flow by setting up external FX busses.
An external FX bus is a combination of outputs (sends) and inputs (returns) on your audio hardware, along with a few additional settings.
All external FX busses you have created are available on the effect pop-up menus. If you select an external effect as an insert effect for an audio track, the audio is sent to the corresponding audio output, processed in your hardware effect, and returned via the specified audio input.