I bought this headphone for my homestudio. I record music as a hobby so I wanted a decent headphone without spending the jackpot all at once. My previous headphone was also a Superlux (can't recall what series though) so this seemed to be the right one for the job.
The first thing I did was open a heavy mix in logic an take a listen. What I noticed is that the sound of the headphone is very crisp and clear. Very well balanced sound overall. I played with the bass, mids and highs in the mix and I feld very happy with my purchase right away!
The headphone is very comfortable to wear, the cushions make sure that you don't hear to much noise from 'outside', and after wearing them for a couple of hours they still remain comfortable.
So: the sound is very good, what about the construction quality?
It's mostly made of hardplastics and thats fine, it doesn't feel fragile but it also doesn't feel like it won't ever die on you. The main reason why I gave the quality only 3 stars is because the rubber around the jack cable is already torn on some places...
verdict: It's absolutely a no-brainer to buy this headphone. If you're like me and don't do music professionally you only care about a good sound and a comfortable headphone, and thats exactly what you get!