I don’t know if tighten is the right word, and I think it’s difficult for me to describe sound, much more in a language which is not my native language. Let’s try it:
The treble is detailled and sparkling, midrange and vocals sound alive and very present, bass is muscular and beefy. There’s enough reserve power available for short, loud and dynamic peaks without distorsion or clipping. Detail resolution and separation of instruments and voices is very fine and alive, not as analytical and clean and maybe sterile if I compare this to my AKG K701.
Since I switched from the AKG K701 to the Beyerdynamic DT 990 I noticed a lot more goose bumps, foot tapping and pure joy.
Werner.