It's funny that people are trying to hard to advance tech in active noise cancelling. The real secret is in the materials -- I don't know how but my favorite pa

It's funny that people are trying to hard to advance tech in active noise cancelling. The real secret is in the materials -- I don't know how but my favorite passive headphones knock out ambient noise better than most of the active cans (Bose or other) I've demoed at tech stores. Plus, they cost less and reproduce music more accurately (which may or may not be to everyone's liking)