I have a simular problem. Got a David Clark H10-56 (with the ANR). Bought the headset in the states, on return to the UK, I wasn't sure if it would work. However, worked fine on the AS355 but not on the AS332? Could hear, but mic wouldn't work. Couldn't figure that one out. Surely if it works in one, it should work in the other?
Any guesses welcomed