Two Connect Amps dated 1504. One works, the other doesn't
I bought a house with two Connects, both dated 1504. Using S2, one of them connects seamlessly with Airplay, one does not. I've heard that 2015 is the year that certain compatibilities changed, perhaps even in April of ‘15. Is it possible that I have one device that's "modern," another that isn't? Or is there a different/better explanation?
