I just get these headphone and they sound amazing . I be actually quite surprised consider only pay a measly $ 35 for these bad boy . this be the very first day i use they and there be no sign or crack yet . they do fit a bit too snug though , so it be quite possible they will crack with some use . I be definitely reinforce they before that happen ! I highly recommend these headphone . by the way , it take no time to pair the transmitter and headphone . and I be currently run the transmitter while it be plug in . hopefully the transmitter be power directly from the plug as oppose to the battery .