The Pioneer HDJ-2000 professional DJ headphones have a high-quality frequency response that ensures clarity with crisp separation. The fully enclosed design of these Pioneer headphones reduces external noise, retaining the original quality of your music. Each earcup of the Pioneer HDJ-2000 swivels a full 90 degrees using i-hinge with auto-return for added flexibility. With a frequency response of 5 Hz to 30 kHz, these professional DJ headphones output a wide range of sounds clearly. These professional DJ headphones sport a rugged, lightweight magnesium construction making it easy to transport. Moreover, these Pioneer headphones are precision matched for Pioneer's DJM mixers.