The Adcom 750 is a low cost preamp $1,400 that has a remote controlled switch for inserting an outboard processor or home theater preamp into the signal chain... so the main speakers run by the Adcom and your main 2 channel amp could be "inserted" into the home theater preamps setup. If the Adcom is switched into the bypass the home theaters volume runs the show., but the connections go from the Adcom to your regular 2 channel amp as before, so if you want 2 channel.. then you got good (decent?) 2 channel.
Other good music preamps may also have this feature??
Other good music preamps may also have this feature??