Sound you can rely on - Superior build quality - Every part is replaceable The DT 770 PRO is a closed dynamic headphone which has been designed for critical music and sound monitoring. The single-sided cable makes the handling of the headphone easy. Characteristics: Closed diffuse-field studio headphone \"Bass reflex\" technology for improved bass response Comfortable fit due to rugged, adjustable, soft padded headband construction Robust, easy serviceable construction as all parts are replaceable Velour, circumaural and replaceable ear pads 3.0 m (9.8 ft.) coiled cable (single-sided) Including drawstring bag Specifcations Transmission type Wired Headphone design (operating principle) Closed Headphone impedance 250 ohms Headphone frequency response 5 - 35.000 Hz Nominal sound pressure level 96 dB Construction Circumaural (around the ear) Cable & plug Coiled connecting cable with mini-jack plug (3.5 mm) & ¼\" adapter (6.35 mm) Net weight without packaging 270 g