I need to overhaul an old 6x4 component based video distribution system where 2 of the 4 zones have surround sound with AVRs, and two zones just play TV audio through the TV speakers.

I’m thinking of either SnapAV or J&P. In either case, how do I get audio from the sources to the AVRs? Is the best practice to add an RX for each AVR?

The control system is Control4.

Thanks.