Model: M80
29 x 13.5 x 42 cm, ca. 10 kg
Wooden box with leather finish, metal, external microphone, wire coils, built-in loudspeaker, tube amplifier

This means of conserving sound is based on thetransverse-magnetization of a steel wire drawn across a recording head. This steel wire system was used as early as around 1900 by the Danish inventor Valdemar Poulsen, whose device was originally intended as a dictation machine. The Webster wire recorder was the first affordable recording device, and with a wire 2,200 meters long and a speed of 60.96 cm (24 inches) per second, could store up to one hour of sound.

 
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