Is there a way to control SoundSwitch from the command line?

Yes — SoundSwitch ships with an official CLI (SoundSwitch.CLI). It is bundled with the installer and added to your PATH so you can call it from any terminal:

SoundSwitch.CLI.exe switch --type Playback
SoundSwitch.CLI.exe switch --type Recording
SoundSwitch.CLI.exe mute --toggle
SoundSwitch.CLI.exe profile --list --json
SoundSwitch.CLI.exe status
SoundSwitch.CLI.exe devices

All commands accept --json for machine-readable output; failures in JSON mode print a JSON object with an error field and exit with code 1.

See the CLI usage page for the full command reference.

Third-party tools

Historically, before SoundSwitch shipped with its own CLI, the recommended workaround was NirCMD, which can change the default playback device from a script. It is still useful for very advanced scenarios that the SoundSwitch CLI doesn't cover.

---

Source: #1081