The ESP950 from Koss is a high-quality electrostatic stereophone headphone system designed to provide stellar audio quality in a comfortable package. The system uses electrostatic transducers with cross-matched mechanical damping and semi-conductive coating to provide an incredibly flat frequency response across the entire audible range for accurate monitoring.
The headphones have an adjustable headband to fit virtually any head size. The closed-back design and around-ear vinyl cushions provide a comfortable fit and help to naturally block out ambient noise. The cable is 4' long and has a detachable 6' extension for extra slack. The system comes complete with the headphones, an energizer, battery pack, leather carrying case, connection cables, and a 120VAC power adapter.