Otto Birckhahn

German recording engineer. Born 12 January 1877 in Berlin, Germany and died 21 April 1945 in Berlin-Steglitz, Germany. In 1902 he accompanied William S. Darby on a recording expedition to Russia for Grammophon; in 1904, he was head of the Gramophone Co.'s Berlin office. By 1907, he served as a Director for the Favorite Schallplattenfabrik in Hannover, where he signed his matrices with B, a, b, or c. Later, he worked as a recording engineer for Carl Lindström A.-G. in Berlin, signing with a handwritten "OB" that can look like "CB".