Hey folks. I just took delivery on an RR2150, plugged everything thing in, and much to my dismay, there is a significant imbalance in the output levels between the right and left channels. At first I thought something wasn't hooked up correctly, or that I had somehow screwed up the settings, but after careful review and meticulous attention to detail with the settings and set up, I believe the problem is internal to the receiver. It is the same with all signal sources into the system, leading me to guess the problem is in the power amp section. I am thinking I will probably have to send it back - bummer!!