Audio Hijack 4
Capture any audio streams on your Mac
$64 From Frogueamoeba.com
Needs macOS 10.14 or later
You start with a session — which can be picked from a variety of templates — then add your input blocks.
Audio Hijack is a clever app that can intercept and record any audio playing on your Mac, be it from a microphone, a Skype call or a video playing in Safari. One use for it would be to record a conference call but you could also record a multi–mic podcast, or digitize your vinyl collection.