After reading more online it looks like there are certain serial numbers that people are having issues with (It was starting 1234 something like that). Mine was 1235 and did not have the same issues so I think you probably got a bad set. I would have a little talk with them too if I was having issues! :)
Mine is 1234 and I haven't run into the problem yet. At the same time, I don't listen above 80 dB normally.