These headphones have been nothing short of fantastic. Just like many of the other reviews will tell you, they are incredibly clear, detailed, full-bodied with a slightly forward sound, which is really live. (without being artificial) Easily powered by my Cowon S9, X-Fi Xtreme Music, and Kurzweil SP2X. Construction is solid, those cables will never break. Ridiculously comfortable, even with my glasses for hours. Top notch buy.

In shorter words: Like a more lively and detailed Beyerdynamic BT990.