"When electrical equipment manufacturer AEG introduced the Magnetophon K1 in Berlin in 1935, more than five decades had passed since Thomas Edison's groundbreaking phonograph.
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Walter Weber, working for Hans Joachim von Braunmühl at the RRG, discovered the AC biasing technique, which radically improved sound quality. In 1936 the first-ever concert was committed to magnetic tape in Ludwigshafen: a recording of the London Symphony Orchestra
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1939, Magnetophon «TON-Sb» from a German radio station:
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Walter Weber, working for Hans Joachim von Braunmühl at the RRG, discovered the AC biasing technique, which radically improved sound quality. In 1936 the first-ever concert was committed to magnetic tape in Ludwigshafen: a recording of the London Symphony Orchestra
…
…
1939, Magnetophon «TON-Sb» from a German radio station:
