The DT 770-PRO Studio Headphones with 250 Ohms proves its power when connected to a hi-fi system at home or with an Amplifier. The DT 770 PRO is a closed dynamic headphone of exceptional quality suitable for the most demanding professional and audiophile applications. The long term comfort and accurate performance make the DT 770 PRO the perfect monitoring headphone for recording studios, post production or broadcasting situations. The low mass coil and diaphragm assembly produce a transient performance equalled only by electrostatic earphones, and, in combination with a carefully tailored frequency response offer a natural and balanced sound. Soft earpads and adjustable, sliding, earpieces together with a single sided connecting cable ensure listening comfort during extended periods of use. 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) Specifications: Transducer type: Dynamic Operating principle: Closed Nominal frequency response: 5 - 35,000 Hz Nominal impedance: 250 Ohms Nominal SPL: 96 dB SPL Nominal T.H.D: < 0.2% Power handling capacity: 100 mW Sound coupling to ear: Circumaural Ambient noise isolation: 250 Ohms: approx: 18 dbA Nominal headband pressure: approx. 3.5 N Weight (without cable): 270 g Length and type of cable: 3 m / Coiled cable Connection: Gold plated stereo                 jack plug (3.5 mm)                  1/4 adapter (6.35 mm