The sound quality for music is pretty balanced all around. The only time I felt they were lacking slightly was in the hip-hop and rap genre. The bass was there and noticeable, but it sounded like it really made the drivers struggle. They didn't crackle, but I did notice this sort of off-color vibration at the heavy parts. But I can't really ding the headset for this because...well...they're not exactly made for that. Still, facts are facts and I think it's important to speak to this point.
The wire for these headphones is a little different than most people are probably used to. The wires don't hang straight down, they curl up over your ear and drape down the backside. This may be strange for those who aren't use to it, but it definitely helps the earbuds stay in place during more active times. Although I received this product in exchange for an honest review, all opinions expressed are my own and reflect my personal experience with the product.