I have a normal MP3 player, where I plugged the headphones. My old headphones had broken cable, making them broke down, so I thought, I order this one, as they have a flat cable. That's what I find very positive to the headphones - the flat cable, the last not even tangled constantly and can not go as fast something breaks. However - and I am speaking personally only by me - I find the plug ears, despite the possibility of 3 "to infect" the different sizes very uncomfortable in the ear. On the one hand I have a feeling this balloon-like Stöpselaufstätze suck right in my ear firmly, so I absolutely nothing more hear the other from the outside, just my breathing or other, "the body's internal" noise when I just the cable a little loose or if I go over my jacket. When I was underwater, but somehow uncomfortable. Because the plugs sit so tightly in the ear canal, this press and do me a short time really hurt in the ear (found in any size paper). Maybe I just have very small ears but it's still not fun. As for the sound, I am now not so much demanding but with these headphones sound the music of my sensation after quite dull and very bassy (even if I took away the bass of the song). I must confess I was of my "plastic" -Ohrenstöpseln without any attachments enthusiastic, even with NEM ollen foam cup headphones everything sounded better and clearer. : - / Well, will keep the product might still, maybe you get used to the time off? : -7