sorry for the extremely long reply. Yes I want to run multichannel outside. I don't care about controlling speaker switching from outside. I temporarily bought a speaker switch, And it does work fine, however the impedance poses a problem as it will over heat my receiver running 4 fronts.. Unless I leave off my interior front speakers.(but the rears and centre, sub are still on).... As per the pre outs on the back, I tried hooking up an older 2.1 amp to the pre outs via the CD input on the older amp. But I get no sound. It says they are for front height and surround back speakers. can someone explain pre outs? I might look at getting a better speaker selector switch, Unless you can think of something else. Returning the receiver is not an option.