Can you adjust db for each surround separately? I have a 5590 (rx-v1300 I believe is the equivalent) and I can't adjust them separately...with my room setup my two surrounds end up having to be different distances from the listening position so I may want to upgrade...btw, is the auto-equilibrater thingy "better" than using a sound meter? I'm trying to see if overall an upgrade would be useful...