One guy discovered them, and I recently had a chance to borrow it.
And you know, they are damn awesome. I dont like 770-880-990 modern line at all, but this thing is totally different.
Very clear, fast and detailed. Possibly one of the best Beyer's out there. I choose this over T1 any day.
Bass can be overwhelming sometimes, but it is so clear, that it does not affect middle at all. This does not sound like a typical closed can. While soundstage in not wide, its not feel restraint also.
Overall I can describe it as "in you face" energetic sound, in a good way.
note: bass distortion is not accurate, it is caused by environment conditions.
Also, earcups are elongated, and so at certain fit can lose seal. I tried to emulate this on measurement stand and got this: