@lw I use GarageBand for most of this. Although GB only takes one input device, that device can have multiple sources, or can be an aggregate created in Audio Midi Setup.A nice alternative is SoundDesk, available in the App Store.
EDC ๐บ๐ฆ๐ฎ๐ฑ๐จ๐ฆ๐ฌ๐ง๐ฆ๐บ๐ซ๐ท๐ฉ๐ช๐ณ๐ด๐ซ๐ฎ๐ธ๐ช (@simplyedc.bsky.social)https://bsky.app/profile/simplyedc.bsky.social/post/3mamagh3igk2g> Old Skool #Audio Stack. #Audiophile