Rick, although I don't have personal experience with the NR-900, I'd be astonished if two things weren't true: 1)the Net-Tune does work when set up correctly(the separate Net-Tune manual is complicated); 2)the receiver definitely doesn't "lack power". There's a volume-limiting setting in one of the menus, are you sure that you didn't accidentally set it? If not, maybe in the basic level calibration how about starting out at +3or4db on the left-front speaker instead of 0? The shelves should be bare and plaster should be falling from the ceiling. Don't give up on the NR-900 yet.
