Legendary DT 880 Premium, 600 ohm version; Stereo Headphone for high power requirements, headphone amps. Innovative "Bass reflex" system for excellent audio performance. Semi-open headphone, Single-sided cable with gold vaporized stereo mini jack & 1/4" adapter. Semi-open headphone, Single-sided cable with gold vaporized stereo mini jack & 1/4" adapter. Frequency response 5 - 35,000 Hz