These headphones were respectable for the several types of music I played (rock, jazz, folk, and classical). They didn’t stand out in any area, but they performed well in all ranges. Treble wasn’t tinny, midrange wasn’t stifling, and bass was solid but not overdone.
I was willing to give these headphones a bit of a break since they were wireless, but I didn’t need to grade them on a curve. They sounded just as good as several corded headphones I’ve tried. I’d rate them as much better than most sport headphones you can find at your local electronics store, but nowhere near the quality of higher-end ear-cup headphones. For example, the $134 Bose TriPort headphones have much better sound in all ranges. They are corded, however, and do cost a bit more.
All in all, I’d have to say they were better than most of the semi-open headphones I’ve tried and pretty close to the ear cup headphones in the $60-100 range. If you have to go wireless, you probably will be happy with the sound.