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

Champion Model 215 "Featherweight" Vacuum Tube Hearing Aid

 The Champion Model 215 "Featherweight" vacuum tube hearing aid was the second and final hearing aid made by Max & Prindle of Fort Worth, Texas in 1952.

This hearing aid has a gold-colored anodized aluminum case. It measures 2¼" x 2" x ¾" thick. Without batteries it weighs 2¼ oz.

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Top view of the Champion 215 showing the receiver cord jack (middle) and the on/off-volume control wheel (right).


 

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Rear view of the Champion 215 showing how the back slides off in two sections revealing the battery compartment (right) and electronics (left).

 

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Inside view of the Champion 215 with the plastic cover over the electronics section removed revealing the three tiny Raytheon vacuum tubes.

It was powered by a 404E (or 0814)15 volt "B" battery, and an RM-1 1.4 volt "A" battery.

The red tab (top right) served two purposed. First, it was an easy way to pull the batteries out to change them. Second, the metal band part served as the positive lead for the "A" battery.  The "B" battery went in the top left corner and the "A" battery in the top right corner.

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The Champion 215 in its original case.

 

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The case (closed) for the Champion 215.

 


 

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