Hi Smoker Man, That makes a lot of sense. This must be why most people seem to have 4-channel amps, or multiple amps. I dont really think using one 6channel will do the trick in effectivly power all 4 speakers and 1or2 subs. The 6-ch. amp I was considering had 4x55W and 2x110W. The 4-ch. is 4x50. The 6-ch. looks more powerful, but I know know jack about wattage and what's needed. But speak with the installer, he/she knows whats best They suggested a 5-channel. I suppose this is a 6-channel with 2 of them bridged for the sub, right?