I used a Tripplite Isolation Transformer on my system. However, after it started to hum after a few years, I went wild and purchased a Shunyata Everest Power Conditioner, which honestly, not only protected my gear from a lightning strike that fried our generator and HVAC, but elevated my system to a new level of satisfaction. The Everest added a 3D quality to the soundstage that I felt was lacking and now the system is just synergistically perfect! An expensive but highly recommended purchase!
