macOS audio preset manager — switch input/output devices and volumes with a single command.

Download a binary from the releases page.

Requires Go 1.26+ and macOS (CoreAudio).

go install github.com/sixlive/mux@latest

Run mux with no arguments to launch the interactive preset picker with fuzzy search.

mux              Interactive preset picker
mux create       Create a new preset (guided wizard)
mux apply NAME   Apply a preset by name
mux edit NAME    Edit an existing preset
mux delete NAME  Delete a preset
mux list         List all presets
mux devices      List all audio devices

# Create a preset for your desk setup
mux create

# Switch to it later
mux apply desk-speakers

# Or pick interactively
mux

Presets are stored in ~/.config/mux/config.json.

Each preset can configure:

• Output device and volume
• Input device and volume

Devices are matched by name, so presets survive USB reconnections that change device UIDs.

A Raycast extension lives in raycast/ — pick and apply presets with fuzzy search, without opening a terminal. It reads the same ~/.config/mux/config.json, so presets you create with the CLI show up automatically.

See raycast/README.md for setup.

MIT