Magnetic recording tape was invented in 1935 by the German company BASF and the first reel-to-reel recording device, the Magnetophon K1, was presented in the same year by AEG.
https://de.m.wikipedia.org/wiki/Tonband#/languages
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Magnetic recording tape was invented in 1935 by the German company BASF and the first reel-to-reel recording device, the Magnetophon K1, was presented in the same year by AEG.
https://de.m.wikipedia.org/wiki/Tonband#/languages