Sennheiser HD 7 DJ Headphones Elliptical, closed back circumaural design for maximum comfort and reduces background noise to a minimum in even the loudest of listening environments. Capable of very loud, high SPL (115 dB) suitable for loud DJ environments, but high noise isolation mitigates the need to max out the volume for safer listening. Swiveling ear cups (up to 210 Degree, both ear cups) with three wearing positions. 95 ohm impedance for optimum compatibility with DJ equipment. Single-sided coiled cable can be attached to either ear cup; straight cable included (both up to 3m). Premium protective case included. Two year warranty.