Audio-Technica ATH-ANC7B Noise Canceling Headphones
Audio-Technica's ATH-ANC7b headphones feature QuietPoint technology that can reduce background noise by up to 20 dB. These over-the-ear headphone use 40mm drivers with neodymium magnets for high efficiency. Like most A-T products, the ATH-ANC7B have a smooth and balanced frequency response and create a fairly big soundstage, better for fans of acoustic, classical, and jazz. But, if you frequently find yourself in very noisy environments, these will not cancel noise to the extent that other choices will. Plus, these are known to leak a little more sound out too. So if you don't want to disturb others, this may not be the best choice.
We should note that these do work in full passive mode, and even if no battery is installed. That's a nice plus. Overall, these noise cancelling headphones from Audio-Technica do a decent job at noise cancellation, and better job at being good reproducers of hi-fi sound. They are comfortable enough for extended listening sessions, and priced very reasonably.