I don't know if anyone else has found this, but when I use stereo headphones (of any type) with the Quest, then the quest sometimes works, but more often than not goes into a constant refresh cycle. Now I'm not electrically / electronically savvy, so please ignore my ignorance.
However I found the solution was to use a mono to stereo convererter (from maplins). This seems to stop whatever interference was causing the problem.
Now I got my (stereo) speakers as a freebie when I bought the quest 1, and it took 4 sets of speakers (all replaced FOC by the vendor), before they eventually delivered a mono headset that worked. This gave me the clue, so I bought the adapter, and hey presto - job done.
So if you plug in some stereo speakers, and the quest works then great. If you run into the constant reboot cycle that affects my quest - then try an adapter)
Cheers
Dave#...