Hi Franklin:
We do not have a dedicated Speaker Selector box that will work for your application. I believe you can create your own Speaker selector panel using our individual Volume Controls and Mounting brackets (we have brackets for 1, 2, 3, and 4 controls). These would be for the Rooms/Zones that do not already have a Volume Control wired in-line. You may need to purchase a Decora panel cover plate depending on the mounting bracket selected (1, 2, 3, or 4 hole opening). Since your application does not call for Impedance matching because, your zones are being powered by its own dedicated stereo amplifier (2 channels of the ELAN), We would recommend using out VKR120 kit which is a Resister Based Volume Control. In theory it has a broader Frequency Response and better overall sound quality. Let me know if I can be of further assistance.
TL - 1407