I'd call a electrician and run a dedicated ground and a sep line for your audio. He can also fix the grounding issue for the rest of the house. You might have a fire/electrocution hazzard right now...
Clean power & ground issue?
I have a serious ground problem in my home. I have tested the outlets & they all show ungrounded & inverted. It's obvious that whoever did the electrical work in my home missed a few steps. Can I overcome the ground issue with one of the power conditioners on the market? I know this is holding my system back & want to take the next step. Short of rewiring my house or getting an electrician in to run a new line what else can I do?