I cannot directly answer your question, however I have heard that the intercom is better than in the 200. I am currently finishing up the wiring on my a 210 and am wiring the intercom in, and it should be done within a week. I could let you know the result shortly.
From a wiring standpoint it appears not bad, it has low level inputs for audio input, as well as an intercom switch for off and on.
It would be nice to hear from someone who is using it in the air, too see how well it performs with ambient noise.