I am completely satisfied with the headphones. The bass listen to very good and the other frequency ranges sounding clean. Fine tuning the equalizer is not necessary. According to the packaging the headphones cover a range from 18Hz to 28kHz from.
The comfort is fine. The ears are completely covered, with me, however, very scarce. People with big ears might get into trouble here.
The price / performance ratio in this Kophörern optimal.