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Review title: You get what you pay for...
Product review: These sound OK, but they barely reduce any outside noise. I fly a lot and I bought these for on the plane, but after one flight I returned them. The noise-cancelling technology seems to be just an audible hiss and an elevation in the volume. Aircraft and ambient cabin noise is reduced only marginally; I still had to crank the volume to hear my music effectively. Even at home I put these on in front of my computer and I could still hear the hum from my CPU. If you want noise cancelling, spend the extra money and get the Bose.
