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: 1921-1953

Duratron Model R Vacuum Tube Hearing Aid

The Duratron Model R one-piece vacuum tube hearing aid was one of the early all-in-one hearing aids to appear on the market. The Model R was produced about 1946.

The "Duratron" trade name was used by the C. L. Hoffman Corporation of Pittsburgh, PA.

The Duratron Model R used a "C" size 1.5 Volt A battery and a 30 Volt (type 430) B Battery. The relatively large batteries made this hearing aid rather large, measuring 5¾” by 2½” by 1¼” deep. With the batteries inside it weighed 10 oz.

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The Duratron Model R in its original box. The receiver and ear mold are at the top left.

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The batteries used by the Duratron Model R. The smaller (blue) battery is the "A" battery, while the larger (gold) battery is the "B" battery. As you can see, the batteries took up most of the space in this hearing aid.

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