Our Over Ear Noise Canceling headphones are uniquely designed to enhance your musical experience while eliminating any distractions. Close your eyes for just a moment and let your iTunes take you to concerts all over the world, without the crowd. These headphones are specifically engineered to actively eliminate over 95% of ambient noise.In order to deliver this superior sound quality, two microphones measure noise levels from inside the ear cup, while an additional two microphones measuring the level of ambient noise. Using this measurement generates a canceling signal, which effectively attenuates any interfering noise. This then delivers the effect of listening to your music in complete isolation.