Far superior to my old Sennheiser's, in many ways, though i spose they are double the price. Bass is very full, drowns out alot of mid range and mid range and high end if you are not careful with the EQ, but i found that when i used them with my Ipod if i turned the EQ off the sound was perfect. Takes time to wear them in, and kinda painful clamping sensation for the first wee while, but as you wear them in it is very comfortable. This is somewhat cancelled out by the lightness of them, because aside from the clamping you could not tell you had them on. ive had them round my neck before and went looking for them because i forgot they were there because they are so light. Lastly, you have to compliment the noise cancelling. I cant hear myself speak with them on and my ipod at half volume. it really takes some serious loudness to penetrate them. And this also works in reverse, unless you take them off, a person can pretty much put their ear to a cup and not hear what your listening too. All in all, a really great set of cans and im glad ive bought them.