Pros: loud, convenient, light, collapsible, rugged/durable, sounds better without pads
Cons: too much bass, weak pads, poor stereo imaging
These make everything sound huge, loud, big & boomy. But its an artificial bass sweetening that is not right for mixing, monitoring, vocals or classical music. You can decrease the bass by removing the cheap weak foam, but it still won't be flat enough for mixing. I suppose its nice for bass players, drummers or djs that want the rhythm section of a song maximized in noisy environments for beat matching and such. All the harmonics and overtones of middle and high frequencies are lost though, making vocals and strings sound like they are compressed or cut short with a pass filter or parametric eq. You'll never hear anything with reverb or spacial stereo properly either. They are very rugged and loud but not good for proper listening.