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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Click on the "General Information" button (top button above) for an overview and general information on this category of hearing aid.


Vacuum Tube Hearing Aids: 1921-1953

Beltone Model 50 Vacuum Tube Hearing Aid

The Beltone Model 50 vacuum tube two-piece hearing aid was produced by the Beltone Electronics Corp. of Chicago, IL in 1943. This was only the second hearing aid Beltone produced.

It measured 3¾” by 2¼” by ⅞” and weighed 5 oz without the batteries. It used 3 vacuum tubes.

The circular microphone grill consisted of 2 rows of 4 slots behind the vertical ribs on the front of the case.

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Rear view of the Beltone Model 50. The volume control/on-off wheel is at the top center.

Notice the crude V-shaped wire pocket clip.

Above the "V" molded into the bakelite case are the words "Beltone  Chicago  Model" and scratched into the bakelite is the model number "50" and the serial number 2476.

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The Model 50 came with a crystal receiver (right).


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This was called a 2-piece hearing aid because the batteries were external. If you want to get technical about it, it is actually a 3-piece because there were two batteries. The two-pronged plug (upper right) plugged into a 1½ volt "A" battery, while the 3-pronged plug (lower left) plugged into a 45 volt "B" battery.



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