I bought three pairs of these to give musicians when I'm simultaneously tracking a whole band or rhythm section in my little drum room.
I expected to only hear mids, but when I tried these little "toys" I was floored!
Firtsly, deep, DEEP low end! Not overwhelming, but present, great for bass players!
The low mids are obviously a bit colored but not much worse than my AKG K-182s, but they are clear and are very pleasing for electric guitars!
The high end is soft and quite linear considering the price, these are not hi-mid or treble-forward headphones, so they are not fatiguing to the ear.
Also the isolation is nice and linear in the high-end and the ear cup material seems quite stiff and durable, unlike AKG and Mackie ones I've tried.
The only thing I don't like is that they are small, I've got a big head and they do fit but barely, I'd like them to have been more adjustable, but for the price I'm glad they have very few moving parts.
Conclusion:
They are fantastic for tracking if the musicians don't have huge heads, for me these are better tracking headphones than my Beyer DT-770s, they focus on the important frequencies for hearing instruments and proximity effect when tracking vocals, no one needs piercing high-end when tracking.
I'll definitely buy more.