I'm going crazy; I can't decide at all between the Superlux HD668b, SOMiC HM463 or the Takstar Pro 80
I haven't actually heard the Pro 80, but tried the other 2 and currently owning a pair of Takstar HI 2050. So I'm going to share my view on those 3 below
- To me, the MH463 seems to be the better built one out of the bunch (but is the heaviest, you could feel like something is put above your head and it may make you feel tired after a long listening session), but unfortunately the least competent sounding phone. The pair I auditioned sounded mellow but somewhat grainy. The pads were very shallow and didn't provide large space for the ears. Overall, I wasn't much impressed by them.
- Move on to the 668b, its built looks ridiculously cheap with all those black pastic, and the stock pads were super annoying, my ears got really sweaty after a short time wearing them (and it was during a cold winter day). It, however, sounded very exciting, bass and treble extended nicely, quite similar to the DT990 without pushing the mids too far away, though the high were slightly on the hot side.
- Finally, the Takstar HI 2050, the one I'm wearing at the time of writing this comment. Its built quality is between 668b and MH463, leaning more towards the latter. This phone has a mostly neutral soundsig, 3 ranges sound equally loud , but some upper mid and treble frequencies can sound very, and I strongly emphasize the word "very", piercing to sensitive ears with the bad mastered recordings. Over time I have developed a love/hate relationship with this phone. It excels in genres like instrumental, classical guitar, some rock/metal etc. but doesn't quite do it with EDM stuff (Due to the lack of sub bass and the jaggy treble) and female vocal (the mid sound analytical and 'dry'). Talking about comfort, for my average Asian head size I personally think they are very comfortable, very close to the level of Beyerdynamic, but I have seen some western people complaining about the headband unable to stretch further.
Note that I draw this comparison out of my memory, at different time, different places and different setups, and I'm not at all a true audiophile (and possibly never will be with my current income), therefore please don't take my words seriously. I strongly suggest that you audition all of them before making purchase decision. Best of luck!