The premium closed back headphones offer unbeatable audio performance for listeners. They are ideal for professional engineers, musicians and audiophiles.40mm neodymium drivers. Drivers deliver excellent quality acoustic performance, clear extended highs and warm bass. Closed back design. Lightweight construction. Enhanced durability. Steel driver frame. Ergonomic dual frame padded headband. Oxygen free copper cable (OFC). Cable includes a reinforced Kevlarâ„¢ jacket. Dual exit cables. Gold plated MMCX connectors. Replacement earpads. Diaphragm developed with APTIVâ„¢ film for improved linearity and lower THD (total harmonic distortion)Headphone Style = Over Ear (Circumaural)Frequency Response = 5 - 25000 HzImpedance = 46OhmsSound Pressure Level = 99dBCable Connector = 3.5 mm Plug, 6.35 mm AdapterCable Length = 1.83mConnector Adapter Included = YesWeight = 286gMaximum Frequency Response = 25000 HzMinimum Frequency Response = 5 Hz