And now, what about exactingness, with the Nubia Z7 Max, the bass is a little muffled and the detail starts to limp (but it’s understandable, smart without a DAC), but on x3 2nd (not to be confused with x3 3nd) the bass appears + on the player you can indulge with the gain (switching the gain from Low to High) there will be a different sound Has some pros Sound and detachable wires The ability to sit for hours (maybe it's just for me). Versatility (believe me, I have everything in my arsenal, from classics to any power metal (in the form of Dragonforce), everything is lossless (some were bought by me personally) Cons below: Demanding on the source and material, see comments. Yes, they have problems with sound, in the form of a little extra bass, but when you get them for 9400 (Amazon) you just turn a blind eye to it. The headphone fit is adult oriented. I would classify them as semi-closed, not for the subway / plane (I already flew in them on the plane), i. E. outside people do not hear (if you do not turn up the volume too much), and at the same time when you sit in them, you can hear the surrounding sounds a little.