I'm having a similar problem with my MacBook Pro automatically connecting to a "USB audio CODEC" when I join Zoom Calls. I have no idea where this CODEC came from, but I'd like to remove it.
When I search System/Library/Audio/Plug-Ins/HAL this is what I see:
When I log into each of those folders, I don't see anything titled "USB audio CODEC" and when I search in Finder I don't see an exact match.
I'm don't want to go deleting files only to find out I messed up my MBP in a major way.
Also made an account here to say thanks! Had a "Squirrels audio" audio device after uninstalling Airparrot2. Found a folder called SquirrelsLoopbackAudioDriver.driver which in the HAL folder and after removing the device was gone.
ik its a good few years late but bro I've tried all the steps you guys have said and its still there 😭 i went into the hal folder thingy and deleted the files but its still showing up 🙁 also how do you do the file visibility thingy? PLEASE IF ANYONE READS THIS HELP PLZ 😭