If you get going and maybe looking for an isolation transformer I have one that's been sitting in my closet for 5 years. A plitron 3000VA, at my old house I was having some ac issues and Allen maher recommended I buy this and build my own unit. Well I'm pretty in-handy and never did it.
The transformer is brand new and is a monster. Install at your main ac panel box or can build a box with outlets to put in your audio/theat
6130-V1-003000VA Medical Isolation TransformerOutput: 2 X 120VAC @ 26.09A in parallel,1 X 240VAC @ 13.04A in series,Temperature Rise 60C,Leakage current 8uAQuantity:
I paid $415.99 from Plitron. These are built to order with no returns. Asking $300 obo plus shipping. This thing is heavy.