The Sennheiser HD202 closed, dynamic hi-fi stereo headphones feature good insulation against ambient noise and a deep bass response. This makes them the ideal companion for DJs - or anyone who likes to listen to modern, powerful music without disturbing others. The high-efficiency drivers deliver maximum performance. 1/8 inch connector with 1/4 inch adapter. Impedance: 32 ohms. Frequency range: 18Hz - 18kHz.Sennheiser At A GlanceFor 60 years, the name Sennheiser has been synonymous with top-quality products and tailor-made complete solutions for every aspect of the recording, transmission and reproduction of sound. In 1945, Dr. Fritz Sennheiser together with seven engineers and technicians set out on the venture to found a new company. The research and development specialists converted their university institute, which had been moved during the war to the small village of Wennebostel, into what became known as "Labor W", and it was there that they began to build measuring instruments. Less than a year later, microphones were added to their product range, and soon the resourceful team became extremely successful in numerous fields of audio technology.Those were the humble beginnings of Sennheiser electronic, now a worldwide group of companies with more than 1,600 employees and one of the world"s leading manufacturers of complete audio solutions. Still a family-owned company, Sennheiser has made a name for itself above all in the development and manufacture of high-quality microphones, wireless RF technology and headphones. Conference and information technology, infrared systems, products for the hearing impaired and aviation headsets round off the comprehensive product portfolio. The Sennheiser Group also includes the studio microphone specialist Georg Neumann GmbH, Berlin, K+H Vertriebs- und Entwicklungsgesellschaft (loudspeakers and studio monitors) and the Denmark-based joint venture Sennheiser Communications, which develops h