I had these at home for about a month before they were sold on. The relationship with them can probably be described as a kind of hatred. The sound is incredibly transparent and detailed throughout the entire registry. In particular, the middle register really sounds amazing. The base is a bit backed up, but it is there and goes really deep.
The big problem I had with them is that the treble became stressful in the long run. Probably they are tuned by any middle-aged old man who has long lost the hearing in high frequencies. For me who are 25 and with good hearing, it simply becomes too much. I literally got into my ears by listening to them for more than 30 minutes.
It's astonished pity, considering how incredibly good they sound otherwise. Thinking of testing the SR60 instead, but until now, with some resistance, I have returned to my old Koss Porta Pro prostitute. I still give them 8 stars, and in about 40 years, maybe I'll give them another chance again :)