It will work but how will it sound?? Try it out! If it doesnt sound good there are plenty of options. Some recievers always pump a signal to the tape out, I used that trick to set up a system in a friends restaurant. 3 kenwood recievers lol!

With good quality RCA Y Adapters why not? The NAD C 272 has a variable input so that should help getting things equalized between the amps.