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

Mears Aurophone Model 200 "Standard" Vacuum Tube Hearing Aid

The Mears Aurophone Model 200 "Standard" vacuum tube hearing aid was made by the Mears Radio-Hearing Device Corp—Micro-Electronic Products, Inc. of Boston, MA in 1947.

This 3-vacuum tube hearing aid measured 4¼” x 2⅝” x ¾” thick (10.8 x 6.8 x 1.9 cm). Without batteries, it weighed  3.7 oz. (106 g).

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Front view of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid showing the attractive microphone grill design of a fleur de lis above a shield design.

The yellow grill cloth indicated that this aid had a magnetic microphone. (A red grill cloth would indicate it contained a crystal microphone.)

The case came in three colors—beige, ivory or black.

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Top view of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid showing the on-off/3-position tone control (left) and the volume control wheel (right).


 

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Top view of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid showing the receiver cord pins unplugged. Note that they were not yet contained in a single plug as became the standard in the following years.


 

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Rear view of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid showing the rare rounded pocket clip.

 


 

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Bottom view of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid showing the piano hinge for the battery compartment.

One unusual feature of this hearing aid was that the front (rather than the back) swung down to reveal the battery compartment.


 

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Inside view of the front cover of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid showing the name and model molded in the plastic near the top.

It reads, "Model 200   Pat. Pend'g/AUROPHONE/Mears Radio-Hearing Device Corp./New York, N.Y.  Made in U.S.A."

The serial number (58435) is stamped into the plastic on the right side of the label.
 

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At the bottom of the battery compartment door is an instruction label. (It appears upside down in the above picture.) It is shown here right side up and enlarged.


 

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Inside view of the battery compartment of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid showing the volume control (top left), the power transformer (top center) and the on-off/tone control (top right). Below that is the square microphone. Underneath the microphone are 3 vacuum tubes.

This hearing aid takes three batteries, one "A" battery on each side of the microphone and the "B" battery below it.

The label at the back of the "B" battery compartment again gives the name and model, "Standard Aurophone Model 200". In addition to the "Standard" model, there were also "Deluxe" and "Super Deluxe" models (not shown).

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Inside view of the left side of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid showing a vacuum tube sandwiched below the large square microphone.

 

 

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Inside view of the right side of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid showing another vacuum tube sandwiched below the microphone.

 

 

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View of the battery compartment of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid. This hearing aid used two 1½ volt "A" batteries such as the Eveready 1015E and a 22½ volt "B" battery such as the Eveready 412E shown in place.

It was not common to have 2 "A" batteries in a hearing aid.

 

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Close-up view of the back of the receiver of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid. Note that the plug almost burieds itself inside the receiver.

 

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Close-up view of the back of the receiver and the plug. Note that the plug has flattened pins rather than the usual round ones.

 

 

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Close-up view looking into the socket of the receiver of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid. In the back, you can just see the jacks for the flat pins.

 

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Close-up view of the front of the receiver of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid showing the nubbin that the ear mold snaps to. The center hole conducts the sound into the ear mold.

Another interesting feature of this receiver is that the nubbin is offset from the center. This is quite rare in receivers.

 

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Side view of the ear mold and receiver of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid shown snapped together.

 

 

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Shown here are the ear mold and receiver of the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid unsnapped.

 

 

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The Mears Aurophone Model 200 "Standard" vacuum tube hearing aid in its original case.

 

 

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Close-up of the imprint on the inside of the lid of the case in which the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid came.

 

 

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Outside view of the case in which the Mears Aurophone Model 200 "Standard" vacuum tube hearing aid came.

The box measured 7⅛" x  3⅛" x 1⅜" (18 x  8.1 x 3.5 cm).

 

 


 

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