I have the entire system on an isolated circuit from the power company (isolation transformer with separate ground), each speaker with its own dedicated 20 amp line and industrial strength surge protection (its a professional unit that does not restrict voltage or power). Any "dirty" uses such as the motors in my seats in the theater are on their own special "dirty" power line which is not on this power line at all. So everything is sufficiently isolated....

best regards,
Jerry

Best regards,
Jerry
Main System: 861v6, DSP8000s in corners, DSP7000s Center and Sides, 1-9 humans.