High-Quality Professional DJ Headphones High-quality and extremely-versatile professional DJ headphones 57 mm dynamic drivers provide wide frequency response (20 Hz - 20 kHz) delivering deep bass and dynamic range Rotatable, reversible and collapsible ear cups provide flexible and comfortable positioning, regardless of monitoring style Over-ear circumaural design with ultra-soft ear cups and fully-adjustable, cushioned headband Closed-back design ensures consistent listening environment with exceptional sound isolation