Hugh Hetherington Hearing Aid Museum
Hugh Hetherington Hearing Aid Museum

The Hearing Aid Museum

Hearing Aids of all types—Ear Trumpets, Carbon Hearing Aids, Vacuum Tube Hearing Aids, Transistor Hearing Aids, Body Hearing Aids, Eyeglass Hearing Aids and much more!

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Vacuum Tube Hearing Aids: 1946-1953

Otarion Model E4 Vacuum Tube Hearing Aid

The Otarion Model E4 vacuum tube hearing aid was a 1-piece hearing aid manufactured by Otarion Electronics, Inc. of Chicago in 1947.






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It housed 3 vacuum tubes (2 top left and 1 bottom left) in an anodized aluminum case. It was powered by a 22˝ volt 412E “B” battery (bottom right), and a round RM-4 mercury “A” cell (top right). It measured 4⅛” by 2⅜” by ⅞”, and weighed about 7 oz. with batteries.



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