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Stefan Kudelski

Stefan Kudelski
(Photo by Erling Mandelmann)
Born (1929-02-27)February 27, 1929
Warsaw, Poland
Died January 26, 2013(2013-01-26) (aged 83)
Cheseaux-sur-Lausanne, Switzerland
Occupation Founder of the Kudelski Group (1951–1991)
Known for Creating the Nagra audio recorders

Stefan Kudelski (February 27, 1929 – January 26, 2013)[1] was a Polish audio engineer known for creating the Nagra series of professional audio recorders.

Life and career

Kudelski was born in Warsaw into a family with engineering background. In September 1939 the family fled Poland during the Nazi German and Soviet Invasion of Poland. They escaped to Romania, then moved to Hungary, and on to France. When the Germans occupied southern Vichy France, the family escaped to Switzerland in 1943. He studied at the Swiss Federal Institute of Technology in Lausanne and constructed his first tape recorder there, as a student project. The recorder was supposed to drive a machine tool, but was good enough to record audio as well.

  • 1951 - Kudelski built his first Nagra tape recorder
  • 1957 - The Nagra III, a transistorized tape recorder with electronic speed control, is launched

Kudelski received many awards during his career:

Photo of Kudelski receiving one of his very many Oscars
The detailed description on monument.

Kudelski retired in 1991 and was succeeded by his son, André, as a Chairman and CEO of the Kudelski Group.

He died on January 26, 2013, in Switzerland.[1][4]


  1. ^ a b Death of Mr Stefan Kudelski , Nagra
  2. ^ Academy Awards Data Base [3] "Stefan Kudelski"
  3. ^ NATIONAL ACADEMY OF TELEVISION ARTS AND SCIENCES, Outstanding Achievement in Technical/Engineering Development Awards [4] "page 5"
  4. ^ Thomas Mulier (Jan 28, 2013). "Stefan Kudelski, Sound-Recording Equipment Inventor, Dies at 84". Bloomberg. 

External links

  • June 1966 American Cinematographer article about Kudelski's first Oscar
  • French language article about Kudelski's work
  • Short biography at
  • Nagra history
  • Wings Award
  • AES gold medal Award
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