I currently have a Sony 675 receiver that supposedly does 100 x 5. I just picked up an entire Axiom speaker setup that I really like and now want to replace my receiver. I'm looking at the Yamaha 5560 because I can get a great price on it and it has pre-outs. I'll be adding an amp in a few months but for now will have to use the receivers amps. Thing is that the Yamaha is rated at 80 x 5. Am I going to lose alot of output going from 100 to 80?