I'm comming from a m50x and a fidelio x2 and after I got my hands and ears in those german beauties OMG, my jaw dropped hard and I will never be able to put it back to its original location ever again.
The bass is unbelievable detailed, fast and, with B pads installed, very punchy and wide, but far from overwhelming.
Mids are dry, warm, fast and present, I can hear every guitar note and the fingers sliding, voices are only laid back in songs that were made to be recessed and the only thing that I don't get is why people are calling them overly bright?
Holy moly, Highs are increadibly better than my previous HPs, they are much more detailed, present, accurate, to be fair the m50x's highs are murderous compared to these, on the x2's they are a little better than the ATs but much more sibilant than the Beyers.
Soundstage is really spot on (I don't like very wide soundstage because some songs loses it's natural sound) and imaging is out of this world, I can hear every drum hit and can pinpoint the exact location where it is being played, it's like being 2 meters away from the drummer.
Comfort is pretty much nailed with those, I can wear them for how long as I want to, again, I don't get why people say that it's clamp force is very strong and uncomfortable, it's simply not true!
They are my favorite HPs so far and I got them new for 400 bucks, I couldn't be happier, my search for open back cans is over for now.