Wilhelm Kempff
1925 saw the arrival of electronic recordings with the Reisz-Kohl microphone, which replaced the previous acoustic horn microphones. Three years later the first condenser microphone was introduced, from General Electric and Neumann. From 1939 the Zentral-Theaters in Alten Jakobstrasse was also used as a recording location. It was here that the first recordings from Herbert von Karajan took place. Other artists included Wilhelm Kempff, Elly Ney, Georg Kulenkampff, Erna Berger and Heinrich Schlusnus.