hi guys, maybe its sounds like a stupid question, but its worth a few low blows. if there is already a discussion somewhere or a link to conserve your energy, no problem. what is the difference between the built in circuitry in a/v recievers and a seperate amp and preamp setup? i thought it was better to keep the signals shorter, no? i could see that a more powerful amp could very well help sound quality, but the preamp? thanks in advance.