The range! The gold platted plug! The cord! Blocks out surronding noise! IT'S LOUD!!! devices.

After wearing on high it for awhile you start to get a headache! (I guess that's not really a weakness, it mostly from having so much bass)

Amazing!The sound is superb. The best range I've ever seen, 8hz - 27khz! (you no longer hear the bass, you feel it!!) Extreamly comfortable, Long cord (3M), and 24k gold platted plug. I would like to keep in mind hear that these headphones work better on home audio, because thats what they were made for. The cord is too long for portable use and maximum sound is not usually acheived when using most portable devices. If you came hear looking for a good pair of portable headphones i would recomend the JVC HA-B25 I also have these headphones. There light, durable, and pump out a monster BASS and sound. Definatly recomended for portable audio.