We have a lot of power glitches in our area. I have my AVR, BD player, TV, and smaller electronics (crossover, game systems, etc.) on a 1500 VA APC UPS unit. The power amps, including the subwoofers, go direct into the wall. We also have a couple of whole-house units at the main service, one for transient protection and one for lightning (had a strike hit a tree about 50' from the house a few years ago).
I have most all the major electronics in the house, including other TVs and computers, on their own little APC units.
"After silence, that which best expresses the inexpressible, is music" - Aldous Huxley