Then I looked into it, saw all the available "causes" for it(most of them are wrong)
After looking through and trying everything... quitting chocolate made it go away, completely. Four days with no chocolate, and it's better. A month, and I don't even have it anymore.
Try it... it worked for me, might work for you. Hearing artifacts in music is a lot easier now, I remember it being hard to ABX anything above -q3 Ogg Vorbis, today I did so easily to a -q4 on the same song. It's great not to have the ringing anymore... but I want my chocolate back.