Hello all, I have a question concerning the nad c272 and it's iec connector... On the 120v model the iec has only 2 prongs...no ground.... The lack of a ground prong confuses me, while not essential I would imagine it to be useful... I contacted yawa and talked to a guy there (not the usual one I talk to) and he stated that the lack of the third prong would reduce..interference or distortion, something along those lines.... I also remember someone commenting on audioasylum that the nad c372 has a 3 pronged iec...both integrated and power amp do but only on the 230v versions.... What say all of you about this??