Sennheiser electronics — History

History 1976 — 1985

http://sennheiser.com.ua/about/history/

1977	Opening of a second production plant in Burgdorf.
1977	Launch of the unipolar 2000, the world’s first open electret headphones.
1978	In 1978, Sennheiser launched the VSM 201 sound effect vocoder. Following the huge success of electronic instruments, the VSM 201 took the human voice into the same world of electronic sound.
1978	The first professional multi-channel rack receiver significantly improves transmission reliability.
1979	Development of the HiDyn compander system.
1982	The Sennheiser RF wireless classic SKM 4031-TV lays the foundation for the success of Sennheiser RF wireless systems in the follow-ing years.
1982	Prof. Dr. Fritz Sennheiser hands over the management to his son, Prof. Dr. Jörg Sennheiser.
1983	Development of the first directional clip-on microphone, the MKE 40.
1983	Development of the smallest studio clip-on microphone, the MKE 2.