FEATURES ? Closed diffuse field studio headphone ? Innovative bass reflex system ? Robust spring steel headband ? Single sided cable ? Soft inner headband ? Gold plated jack plug (3.5 mm) and adapter (6.35 mm) technical data Transmission type Wired Headphone design (operating principle) Closed Headphone impedance 80 ohms Headphone frequency response 5 - 35.000 Hz Nominal sound pressure level 96 dB Construction Circumaural (around the ear) Cable & plug Straight connecting cable with mini-jack plug (3.5 mm) & ?? adapter (6.35 mm) Net weight without packaging 270 g