: A free and open-source menu bar app that provides professional-grade audio routing and independent volume control for different applications.
: Pair specific input and output devices (e.g., a headset and its microphone) and switch to the entire profile with a single hotkey. AudioSwitcher 3 for Mac Free Download
If you are specifically looking for a free solution to manage Mac audio, consider these alternatives: : A free and open-source menu bar app