I have had two pairs of these. Like everyone says, there is a subwolfer that rattles your head and is great if you like listening to music with heavy bass, as I do. Unfortunatly, the amp will go out without warning as it did with two(!) pairs that I owned. The plastic is wack as well and will break in more places than one. I snowboarded in them and they took on that challenge fine. They fit perfect with goggles and kept snug on my ears, but the quality is just too cheap for the price. I strongly reccommend another high bass headphone other than these as they are cheaply made and are sure to dissapoint sooner than later.