I bi-amped my system and am very happy with the results. Now it sounds even cleaner than before. It's very simple to do, and "affordable" with Outlaw amps. I suggest bi-amping 6 channels with a 770 plus a 755. (You really only need a 6.1 system with one rear center speaker.) You don't need any more crossovers, just your Y or piggyback adapters on the amp inputs.