1800 watts is exactly the maximum that can be drawn from a 120 Volt, 15 Amp circuit. A Watt is a Volt Amp... so 1800 Watts = 120 Volts * 15 Amps.

I'm not familiar with those power conditioners, but pretty much by definition they should be able to do the job. Personally, my 7500 is plugged into a shared 15 amp circuit with a lot of equipment including a Martin Logan Descent subwoofer, 46" LCD, 990, DVD player, CD player, Tivo HD, etc. I often play it quite loud with very dynamic sources, and it's never tripped a breaker or anything like that. A hair dryer or vacuum will always do that though, so at least I know the breakers work.

- Jason