I've got an Onkyo TX-SR607 receiver that has Zone 2 capability. I'm adding a pair of speakers to my dining room, my kitchen, and my outdoor deck, all that I want to be controlled by the Zone 2. I need a box where I can tell it to, for example, put just the kitchen on, or put the kitchen and the dining room on, or even all 3 (and any other possible combination). I'd imagine a standard A/B switch would be fine for turning one on at a time, but would be under-powered for putting all 3 on. Am I correct in my thinking? If so, what would I need to buy to pull this off?
Second related question. I read a user review for my amp where he seemed to imply that Zone 2 doesn't work with any digital input sources. Every one of my sources is HDMI currently. Is what he's saying correct/typical? If so, do I have any other options for pulling off what I'm trying to pull off?