The closed-back HD 25-1 II is a purpose-designed, professional monitoring headphone offering high attenuation of background noise. Capable of handling very high sound pressure levels and of extremely robust construction, this headphone performs exceptionally well in high-noise environments, e.g. ENG, sound reinforcement, studio monitoring and audio equipment testing. The capsule is rotatable for one-ear listening. Ideal monitoring headphone for cameramen and DJs.