I'm still trying to understand HT a bit more. I only want a 5.1 system in my home. However, most of the pre/pro these days are either 6.1 or 7.1. Would I still be able to use these in a 5.1 system? I am currently in the process of picking up a Parasound 2205A. Please point me in the right direction. I don't mind buying a used component so any suggestions of a new or used pre/pro for a 5.1 system would be greatly appreciated. Thanks.