Summary: These are probably the worst headphones I have ever listened to. The "noise cancellation system" blocks nothing; in actuality all it does is produce a high-pitched whirring noise that undercuts anything you listen to with them. The sound quality is muddy at best, and cord is too short (4') for anyone who doesn't like to remain attached to their stereo system or computer.
S. Parshley "Cooked (pronounced like crooked)", Amazon
15 January 2007
Summary: The sound is mediocre to subpar and the fit is painful. The noise cancelation depends on a skull-crushing fit to be effective. I got these as a gift and I'm certain I wouldn't have purchased them on my own (without random and extremely manipulative council or, winning them with a 28% interest credit card). The AAA battery-powered noise cancellation is a pain in the arse because it is easy to leave it switched on after you take them off.