Ableton/Live/UG/17 Routing and IO/05 Internal Routings/01 Internal Routing Points
- When a track's Audio From is another track, the Input Channel chooser picks where the signal is tapped:
- Pre FX — straight from the track, before its devices and mixer.
- Post FX — after the devices, before the mixer.
- Post Mixer — the track's final output after volume and pan.
- Soloing the tapping track lets you hear the tapped track at Pre FX and Post FX, but not at Post Mixer.
17.5.1.1 Routing Points in Racks
- Every chain of an Instrument or Effect Rack, and every return chain of a Drum Rack, offers the same three tap points, listed as
Rack | Chain | Pre FX, Post FX or Post Mixer. Post Mixer is the chain's output just before the chains are summed. 
- Soloing a track that taps a chain still lets you hear that point.