Neo-Bechstein or Bechstein-Siemens-Nernst-Flügel were a set of electric grand pianos that were primarily built by Walther Nernst in the 1930s. Improvising upon an electrical prototype by Oskar Vierling, the design was executed around 1922,[1] and the first of the set was marketed in 1931 to critical acclaim.[2] The mechanics of the piano were implemented by the C. Bechstein company and the valve electronics were created by Siemens & Halske. The design belonged to a newer generation of electric pianos that eliminated the presence of any sound board.
Coffey 2008
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