Negative Positive
Title: Works almost too well - shuts out sound completely.
Review: When they say this isolates sound they're not kidding. I bought these ear phones for use on the New York subway, and they really do block out everything. When I use them at the office people have to tap me on my shoulder to get my attention because I can't hear when they call me.Much better than balky noise cancellation ear-phones that cover half your head.The only warning is that if you don't like ear-plugs or the feeling of the earphones in your ear, you might find these irritating.
Is the review positive or negative? 