Well I have had them playing for a few days continuosly in the shuffle mode on my ipod and I must say that the sound has improved and the sound now is brilliant they are really worth considering I can see why they got five stars on here the sound is so clear in comparison to the other headphones that I own and thats quite a few namely RHA, Soundmagic. Shure I believe that they sound better than all of them. I can hear things that I have never heard before in the music that I like. I am happy now with my choice.