Critically acclaimed sonic performance praised by top audio engineers and pro audio reviewers Proprietary 45 millimeter large-aperture drivers with rare earth magnets and copper-clad aluminum wire voice coils Exceptional clarity throughout an extended frequency range, with deep, accurate bass response Circumaural design contours around the ears for excellent sound isolation in loud environments 90° swiveling ear cups for easy, one-ear monitoring, professional-grade ear pad and headband material delivers more durability and comfort. Detachable cable.