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Together with the Xperia Z2 and the Xperia Z2 Tablet, Sony showcased a new pair of in-ear headphones. They have microphone built-in, but unlike traditional active noise-canceling headphones, the DSP processing is done in the phone/tablet instead of in the headphones themselves. This makes the 'phones cheaper, they don't have to have batteries, and Sony claims that the results are better. We tested them at the show, and they are good.