Ground Gremlins

Anyone ever spend a week chasing a ground loop around the home studio? I got it now with the help of an electrician friend, but damnit Jim, dat dang gremlin was on the WING, on the WING!! It wasn't super loud but I knew it was there and I couldn't make music until it was gone, my console is so inherently quiet

here's to gremlin slaying!

How'd you squash it?

ISO transformers and lift on the console output, moved the console and rack wall grounds around the available conditioners and outlets until they stopped buzzing with a lot of helpful suggestions from my buddy who was a journeyman union electrician every piece has gorund continuity on my meter so it should be safe... god knows what happens when i add in the rest of the gear! This is just the basics.