Thanks for the reply
So, If I understand correctly, I will have my main A/V receiver, and amp for zone 3, and volume control for all the rooms I am calling zone 3, with the amp supplying as many speakers as it can to be effective in zone 3? The receiver and its built in amp will control as many speakers in zone 1 and zone 2 as it will allow?
The remote you mention (IR) - is it the remote type where they are built into the wall (like a light switch) and each zone (or room) would have this remote panel where I can 1) switch audio sources and control volume manually at the panel and/or 2) use universeal remote to control the remote panel, and all remote panels are connected to main AV receiver?