FX Rack Live

FX Rack Live is a compact macOS app for live effects routing with Audio Unit plug-ins. It is designed for practical live and rack setups where predictable audio routing matters more than the complexity of a full DAW session.
Instead of simply choosing the first available audio device, FX Rack Live remembers the device selected by the user and waits until that device becomes available again. Combined with automatic restoration of the last session state, this makes the app especially useful for headless or remotely managed setups, for example a Mac mounted permanently in a mixing-rack installation.
Key features
- up to 4 parallel effect chains
- mono or stereo input routing per chain
- stereo output routing per chain
- Audio Unit effect plug-in hosting
- plugin bypass and editor access directly from the rack
- input and output metering per chain
- stable recall of the selected audio device
- adjustable audio buffer size
- save and reopen sessions as JSON documents
- autosave recovery after restart
- optional preset folder access for sandboxed App Store builds
Designed for live use
FX Rack Live is intended for situations where you need to return quickly to the exact same routing and effects configuration. It works well as an external FX host next to a mixing console, in fixed installations, and in compact live setups where stability and predictable recall are more important than sequencer or recording features.

Screenshots
The expanded rack view shows two active chains with audio routing, metering, plugin controls, buffer status and preset folder access.
The collapsed rack view keeps the active chains visible while hiding empty chains and slots for a cleaner live workflow.

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