SoundSource

SoundSource provides audio controls for your Mac from the menu bar. It lets you adjust system audio devices and manage sound separately for individual applications.

• Change volume for individual apps, mute them, or redirect their audio to a different output device.
• Adjust settings for system output, input, and sound-effects devices, including volume, input levels, balance, and sample rate.
• Apply built-in audio effects, including a 10-band equalizer, or use Audio Units for app-specific or system-wide processing.
• Send audio from selected apps to AirPlay devices, including multiple devices grouped for playback.
• Use Mac keyboard volume keys with outputs that do not support those keys, and trigger audio adjustments through Shortcuts workflows.

Install this Homebrew test cask with brew install --cask soundsource@test. The cask requires macOS 15 or later and conflicts with the soundsource cask. The official download is offered as both a free trial and the full version; the full version is unlocked with a purchased license key. The Homebrew cask installs SoundSource.app in /Applications.

Official SoundSource page · Homebrew cask definition