Zenith "Ambassador" Behind-the-Ear Hearing Aid The Zenith "Ambassador" behind-the-ear hearing aid was manufactured by the hearing aid division of the Zenith Radio Corp in 1958. It was a 3-transistor aid. The ear mold tube connected at the top center of the aid. This was Zenith's first behind-the-ear hearing aid with the receiver built into the aid. The sound traveled down the tube to the ear mold. |  | Click picture for larger view | | |   | | |
| Rear view of the Zenith "Ambassador" showing the on/off switch was near the top to the right. As a matter of interest, this hearing aid did not have a volume control. The two slits one one each "shoulder" about 2/3 of the way down are the microphone ports.
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| Side view of the Zenith "Ambassador" showing the opened battery door. This hearing aid used a No. 675 battery. |  | Click picture for larger view | | | |
| View of the Zenith "Ambassador" showing its size. |  | Click picture for larger view | | | |
| The Zenith "Ambassador" in its original carrying case. |  | Click picture for larger view | | | |
| Top view of the carrying case for the Zenith "Ambassador".
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