Does the receipt say Used on it anywhere? Amazon Warehouse policy states there is no manufacturers warranty on used items. But you'be got a warranty card and if the receipt is "clean" how would AKG / Harmon know? Maybe by the price and that it's from A.W.?
Have you ever sent an A.W. purchase in for warranty repairs?
never had to send any "premium" TOTL headphone in for repairs. I take pretty good care of my stuff. and the receipt says used. so who knows.
yeah the HD650 are awesome cans.... such lush mids. Look pools of syrup where you just drown in them.