Your question seems to be covered here with some limitations. https://github.com/ExistentialAudio/BlackHole/wiki/Multi-Output-Device#4-select-output-devices htt

Your question seems to be covered here with some limitations. https://github.com/ExistentialAudio/BlackHole/wiki/Multi-Output-Device#4-select-output-devices https://github.com/ExistentialAudio/BlackHole/wiki/Multi-Out...