I have a Soundcore 30Q that connects wirelessly to my MacBook Pro running macOS Ventura. But the sound quality went back and forth between great (headphone mode) and awful (headset mode).

After resetting the headphones, unpairing and repairing — all of the things — I finally found that Audio Hijack was causing the problem. I love Audio Hijack, but when I used the Soundcore Life Q30 as an input source it would switch modes, making music and video sound quality untenable.

Awful:

Disabled in AudioHijack, back to great:

So, posting this in hopes that the next person struggling with this admittedly super-edge case issue is able to find an answer!