So I finally got to test these bad boys out and I'm surprised, not in a good way. Those who said these are excessively heavy on bass were absolutely correct. I'm surprised these get recommended as often as they do. The sound that is they present on the high end and mids are OK but they get overpowered by the bass. Simply put, they feel imbalanced and this is very apparent when you have music that may be a little bit heavy on bass but also carries various other elements (for example Dance music with vocals). I would have thought that it would make bass heavy music sound better but no, it just makes everything muddy.
Keep in mind I am coming off of Sony MDR-7506's which I've owned for about 10 yrs. I know the Sony's are sharp but the DT-770s sound very muddy in comparison. In fact, not even comparing to the Sony's, I took a break all together, listened straight ahead to the DT-770s with fresh ears and once again, they just simply feel imbalanced and EQ'd. Its as if someone took the 100-250mhz and bumped it up a couple of notches. Only if, they wouldn't had done that and balanced the bass out with the mids and treble..hmm.
Anyway, I will give them a couple more goes before giving up on them.