Very impressed with these headphones. Least importantly, they never tangle which is a nice touch. The sound is very crisp and I find it hard to believe you could get any more bass out of a set of in-ear headphones - but if you could, a little more wouldn't hurt. I could never go back to el cheapo headphones after these. Everyone who has used them has been particularly impressed by sound quality, comfort and the sense of noise canceling they create when using them in a noisy environment.