I am an original owner of 5A's and was going to send them back for the update. My wife and I listened to the 5A Carbons and although the electronics were different, and maybe an unfair evaluation - but we both agreed they sounded so similar, it wouldn't have justified the cost. MAYBE....a bit more clarity in the mids, but not sure. If I were to buy new, I would probably get the 5A C's, but I'm quite contented with the speakers I have.
