From SoundSource’s menu bar icon, you can instantly configure the
audio devices your Mac uses for Input, Output and Sound Effects.
In seconds, you can adjust the volume for each of your audio
devices or switch between connected devices. SoundSource can also
enable the soft play-thru of audio from input devices. Use the
Play-Thru window to monitor any connected input, such as a
microphone, right through your headphones or other output.
SoundSource is a superior sound control in a tremendously
convenient package. It tucks out of your way in the menu bar until
you need it, then provides easy access to swap audio devices,
adjust volumes, and more. It’s the sound control that should be
built into MacOS, now available from Rogue Amoeba.
$10 (cheap!) but even better: if you have a current license to any other Rogue Amoeba product, you get a license for SoundSource free of charge.