Please beware that not all ANC headphones can block out the noise completely. While it might be a good thing because when you are traveling outside or crossing the road, then you should beware of the happenings of your surrounding. The models that we have listed come with a solid ANC feature that can block noise completely. You can’t hear anything, once you have turned on the ANC feature. Makers like Sennheiser, Sony, and Bose, have improved the technology, so their noise-canceling works eloquently.