The DT 990 PRO is an open dynamic headphone for studio applications. Due to a weight reduction of the diaphragm an excellent sound reproduction quality is achieved. Its rugged design with a spring steel headband ensures a secure fit and withstands all demands. Soft headband and ear cushioning systems ensure a high comfort over long periods of time. Features Open diffuse-field studio headphone 250 ohms Professional version of the many times awarded DT 990 Extremely lightweight diaphragm for superb impulse performance Excellent sound reproduction Robust, easy serviceable construction as all parts are replaceable 3.0 m (9.8 ft.) coiled cable (single sided) Includes drawstring bag Specifications Transmission Type: Wired Headphone Design (Operating Principle): Open 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) and 1/4" adapter (6.35 mm) Net Weight without Packaging: 250 g