I just bought RC-63's and the RC-64 Center. I also have the Harman Kardon AVR-354 refurb from Harman Kardon. It has 75 watts of power for all 7 speakers. It is enough to drive the speakers quite well. Not to mention that the sound quality is very, very, good. I plan on geting a amp later. But for now it is a very good set up. Great Highs, Great Lows, and Great Playback! Go For IT!!!! IT will make you feel better!
Brown