The InSound noise-cancellation headphones were on display at CES: ShowStoppers 2012, and we took them home with us to put them to the test. After opening the protective case, it contained the headset, two audio cables (one red, one black), and an in flight adapter. Unlike conventional headphones, they require two AAA batteries to operate - noise-cancellation engaged or not. After installing the batteries, I tested to see how effective the noise-cancellation setting actually were.
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