A truly great pair of noise-canceling headphones will do more than just play your favorite tunes without any interference ...

how much noise they block with their active noise canceling. My top pick are the Bose QuietComfort Ultra headphones. They don't just sound epic, but their noise canceling is the best I've ever seen.

they use some kind of material to absorb or scatter noise, or they use active cancellation that creates a signal to oppose the noise signal. As you’ve probably noticed, both of these approaches ...