Right now I have a Yammha RXV795, which I like but I'm in search of a new amp with a much desired feature. Problem is I have no idea what this feature would be called or how to search for it. I use my amp for home theater and general listening and have a set of outside speakers wired to the the B channel. The amp I'm looking for would automatically shut off the center channel and rear speakers and turn all effects off when I just have the B channel speakers on. Does an amp with this feature exist? Is there a name for this feature. Hope you guys can help.