They are ok, very disappointing to begin with but improve tremendously with a long burn in. The big thing with these phones are that they are bass heavy. You get 4 different bass settings, generally I only use 2 and 3 for most of my listening. The mids are a little withdrawn. The highs are ok. The sound stage takes quite some time to open up but when it does, it sounds quite good. The sound isn't quite as detailed as some other headphones but I found the sound quite warm and nice. I am not sure that these headphone would suit all kinds of listening. for classical and pop, I much prefer the v moda m80 but for trance, which I listen to quite a bit. I prefer the COPs, as I am not a big fan of too much upper mid.
They are a good sounding headphone better than most other fashion headphone, with the exception in some ways of the m80, though the sound is very different between them