Whole House Audio controllers


Senior Member
Is there a list anyplace of whole house audio controllers/brains/receivers that can be interfaced with a home automation system?

I am wanting to see what my options are for something that has at least 4 sources, 4 zones and an RS-232 port with an open protocol. I would also want something that has keypad with direct selection of the sources via labeled buttons OR some sort of display that names the sources. I do NOT want to have to step through the sources or try to remember which source is which.

Here is what I found, but I haven't verified if their protocol is open/available.
Xantech MRC88
Nuvo Essentia
Russound CAV6.6