My audio interface's ground loop took me 4 days to fix, the answer was so dumb
I run a tiny podcast setup in my basement in Columbus, and for the better part of a week I kept getting this weird hum in every recording. I blamed the mic, swapped out XLR cables twice, even borrowed a friend's preamp. Finally, after 4 days of pulling my hair out, I noticed the USB cable was running right next to the power strip on my desk. I moved it about 8 inches away and the hum vanished instantly. It turned out to be a simple ground loop induction issue, not any gear failure. Has anyone else wasted way too many hours on a fix that ended up being just moving a cord a few inches? I feel like I need a support group for that one.