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| 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! | | | |
| Click on the "General Information" button (top button above) for an overview and general information on this category of hearing aid. | | Sonotone Custom Ear Molds Early custom Sonotone ear mold from around 1933. These early custom ear molds began to replace the stock ear molds. This Sonotone custom ear mold was covered by Patent No. 1893474. |  | Click picture for larger view | | |   | | | | | Another early Sonotone custom black ear mold from the 1930s showing the side that goes into the ear canal. This mold was from a Super Sonotone carbon hearing aid (1933).
|  | Click picture for larger view | | | | | The other side of the above custom ear mold showing the side that snaps on to the receiver.
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