Clearly I'm not a pro at this but here goes something...    After not feeling 100% satisfied with my T 70's I wanted a little more Umph in the bottom end so I found great deals on the DT 770/80 ($149 new eBay- Contact me if you want the link they have more plus a 60 day return policy... Yes 60 days no questions asked) and the COP ($189 Amazon-Currently you can get them for $162). I'm still not finished with the testing but so far I do agree with what some have said so far. The DT770/80's have a much crisper sound...

Wasn't sure what to expect out of the box because of all the mixed reviews. By mixed you would see 9 that love and totally swear by Ultrasone but then there was always one troll hating on em and as bummy as their attitude was you always need to think about the bad reviews. That being said I took a risk and my goodness did it pay off!! Now I listen to all kinds of music. I don't mean different types of hip hop or Dub I mean I have music that ranges from Slipknot to Enya!! I live music all sorts of it except new age rap and country. Sorry, can't do...