Acousticon Model A-610 "Privat Ear" Behind-the-Ear Hearing Aid The Acousticon Model A-610 "Privat Ear" behind-the-ear hearing aid was produced by Dictograph Products Inc. of New York, NY in 1958. This 3-transistor hearing aid was designed with an external receiver (missing) rather than an internal receiver which was far more common. This hearing aid measured 1 9/16" x 9/16" x ˝" (4.0 x 1.4 x 1.2 cm). |  | Click picture for larger view | | |  | | |
| Top view of the Acousticon Model A-610 "Privat Ear" behind-the-ear hearing aid showing how the external receiver cord plugged into the top of the hearing aid. The external receiver was similar to those used on body aids of this time. It would have looked similar to the external receiver on this Dahlberg Model D-13 aid. |  | Click picture for larger view | | | |
| Upper back view of the Acousticon Model A-610 "Privat Ear" behind-the-ear hearing aid showing the microphone port (small hole near center). |  | Click picture for larger view | | | |
Lower back view of the Acousticon Model A-610 "Privat Ear" behind-the-ear hearing aid showing the volume control slider in the "loud" position (bottom right) and the on-off switch (left side).
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| Bottom view of the Acousticon Model A-610 "Privat Ear" behind-the-ear hearing aid showing the battery compartment door (center right) in it's closed position. |  | Click picture for larger view | | | |
| Bottom view of the Acousticon Model A-610 "Privat Ear" behind-the-ear hearing aid showing the battery compartment door opened. It swung up from the bottom. This hearing aid used a No. 675 mercury battery.
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| Close-up view of lower back of the Acousticon Model A-610 "Privat Ear" behind-the-ear hearing aid showing the model (A610) and name (Privat Ear" of this hearing aid (top center) and the Acousticon logo (right). Below the logo is the serial number (75603). Acousticon referred to this hearing aid as the "Privat Ear". This name was also used for models A-600 and A-620. |  | Click picture for larger view | | | |
| Back side view of the Acousticon Model A-610 "Privat Ear" behind-the-ear hearing aid. The case was held together by 5 tiny screws.
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