OK, let me clarify. As you can see, I am a newbie at this...sorry. My Onkyo does have "A/B" speakers. It also has "A/B" zones. So, yes, I know that I can watch a movie with main speakers and listen to CD with AB speakers (outside) at the same time. My question is how to add a volume control outside so I don't have to come in the house to control volume. Will a simple volume control switch mouted on an outside wall work by sending the speaker wires through this control box or am I missing something? Sorry I didn't clarify from the start. Thanks for the replies.