Sit back and enjoy your music on the Koss QZ Pro headphones that deliver excellent noise reducing capabilities. The soft vinyl closed cushions create a seal around the ear, warding off any kind of ambient noise that may be present. The tiny microphone attached to this headphone senses low frequency signals in the surrounding environment and creates an anti wave. When the sound wave and the anti-wave collide, it reduces the low frequency noise, thereby enhancing the user's listening experience.