Originally Posted by 12x7
Be careful!!! Don't turn up the headphones too much. You can damage your hearing.
The reason you'd want a pair of the GK Ultraphones (or the cheaper Vic Firth headphones) is that they're true isolating headphones. The GK's are Sony MDR-7506's housed in Peltor Shooter's muffs. When you wear them, they block any incoming sound from the outside, so you don't need to turn them up and can listen at a comfortable level. This is why I don't recommend regular 'home use" headphones for drum use. The chance of hearing damage goes way up.
Or you could get in-ear monitors, like Shure SE215's, which block outside sound out as well.