I have a Yamaha RX-V2700 A/V receiver. I want to use its zone 2, connected to a separate amp, the output of which is directed to a Niles Audio speaker selector. The idea is to be able to direct the Yamaha's zone 2 output to any one of four (4) other speaker pairs in remote locations.
For the second amp (zone 2), I want to use an old Sony STR-D1011S receiver I have laying around that's not doing much of anything. The problem is, the Sony doesn't have separate preamp IN/OUT connectors on its rear panel. Could I bring the zone 2 signal from the Yamaha into some other input on the Sony, such as its CD input, and just leave the Sony in CD mode?