I found it just too flat across the spectrum. kick drums lacked impact when the mallet hit the skin. Mids were cold, distant, sterile and I thought lacked life and energy. Not too many headphones can make an SRV guitar solo flat and lifeless... but the HD280 does. IMHO of course. Treble sparkled nicely and was ambient and lively, but this combined with the lack of midrange excitement / energy made for a very strange presentation. Like the drummer was hitting his crash cymbals and high hat 2-3 times harder than his snare and toms.
IMHO of course