Cipherjuris - long ago and excellent post. The dedicated A/V circuit from the circuit breaker is a great "front end" to power conditioning. I'm in NE Florida where lightening is on the cooks short order menu.
Some strikes are hard to stop. On a partly cloudy day, I saw the freak lightening stike that hit a tree from a window I was looking out 15 feet away. It killed a 25 foot Sable palm.
It jumped from the tree over about 10 feet to an outdoor speaker, and returned through the outdoor speaker lead to blow out a 12 channel amp, 2 indoor wall volume units 80 feet away, two sets of ceiling speakers, and a variety of non-audio items.
My higher end products are now completely separated. I'm now using a lower priced reciever and multi-channel amp for the whole house. It works fine for background music.
I have a dedicated 110 and 220 for a hot tub right outside my indoor A/V area. I'm having a electrician look at converting them to a dedicated, indoor A/V circuit.
Thanks for the info.