Same problem with the M1Max just appeared for me a few days ago. Crackling on certain frequencies while on low volume, doesn't matter if I listen to Spotify or Youtube. Tried everything here already, from resetting NVRAM to deleting those audio settings plist files, restarting a bunch of time, deleting custom audio drivers, updating to the latest OS. It's a persistent issue and I can't get rid of it.
candyflip
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