Hello Tried to find some clear answers to this question but the responses got me more confused. OK, so here is what I want to do: current setup a NAD 375BEE integrated driving rear speaker and Parasound 2250v2 amp driving front towers connected to the NAD via pre-outs. This set up is used currently for music only. So I want to add a video preamp/processor (975 Outlaw Audio) so I can add a center channel and subwoofer for movies. I also have a small amp that I can use to drive the center channel. I want to switch between music or movies but for music I don't want the center channel. I guess i will need some kind of switch box, but what type? I would like to still use the NAD as the main source for music (I have all the sources connected to it) current sources: music player, turntable, sonos, computer, wireless input Can anybody clarify what i need to do? Thanks!