Multi Noise Sensor technology With four microphones on each earcup, this is our biggest ever step forward in noise cancelling. Ambient sound is captured even more accurately for a dramatic reduction in high frequency noise. Thanks to Auto NC Optimizer, noise cancelling performance is always and automatically optimised based on wearing conditions and external environmental factors such as atmospheric pressure. Incomparable noise cancelling Specially developed by Sony, the Integrated Processor V1 unlocks the full potential of our HD Noise Cancelling Processor QN1. This unique combination of technology controls eight microphones to deliver unprecedented noise cancelling quality.