Mackie MC-250, Studio Headphones, Circumaural, 50 mm reference-quality drivers provide high overdrive safety and accurate playback across the entire frequency spectrum, A soft-padded, adjustable headband and comfortable earpads offer an ergonomic fit for hours of comfort, at the same time ensuring optimal bass reproduction and attenuation of external noise, Collapsible for easy and space-saving storage, Detachable straight cable with locking bayonet connector, Swivel earcups, Frequency range: 8 - 20000 Hz, Impedance: 32 Ohm, Sensitivity: 100 dB, Replaceable ear pads, Cable length: 3 metres, Weight: 265 g, Includes gold-plated 6.3 mm jack adapter and carrying case