The team of sennheiser has engineered the closed-back hd 25, which is a well-designed, professional monitoring headphone. It grants high attenuation of background noise. Such headphones features extremely strong construction and are efficient enough to manage very high sound pressure levels. This pair of headphones can perform exceptionally brilliant in high-noise environments, like studio monitoring, sound reinforcement, and audio equipment testing. The rotatable capsule is for one-ear listening. The sennheiser hd-25 acts as an impeccable monitoring headphone for cameramen and djs. Lightweight and comfortable The hd 25 is very light in weight and comfortable to wear for long periods. With 120 db maximum sound pressure level and 70 ohms of nominal impedance, this device enables for universal compatibility. Lightweight aluminum voice coils joined with a tough and detachable, single steel cable provide long years of reliable performance. Widely compatible The sennheiser hd 25 ensures to work well with ipod, mp3, dvd, and cd players as well as mobile phones supporting a 3.5mm jack plug. It is also compatible with the home stereos, and recording or studio equipment that uses a 1/4" plug.