The noise cancellation feature is rated at 89% reduction in linear noise pressure, 99% reduction in linear noise energy and up to 19dB logarithmic reduction in noise pressure. For those less technically inclined, just snap your fingers inches away from the ear cups with and without the noise cancellation on. Or turn them on when the missus is on the war path.The headphones fit quite comfortably and the padded ear cups just about covered the pinnas and the pressure was not too uncomfortable.The connector is a 3.5mm with a quarter-inch connector that fits over it. An airline adapter is also included along with a case.Its rated frequency response is 20Hz to 20kHz and its impedence is 32Ohm which makes it easy to drive.
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