Is there a particular reason you're looking only at Rotel? Nothing wrong with that, just curious. Alot depends on the size of the room and how loud you like to listen. I have Nautilus 805s as my main HT speakers, but I listen to music with them, too. I'm using the RMB-1075 Rotel amp, which is 120 watts x 5. It does the job just fine in my 13 x 22 feet living room. We sit about 12 feet away from the TV console and usually listen at no more than -10db below reference.