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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. | | In the Ear (ITE) Transistor Hearing Aids | Starkey CE ITE Bi-CROS Hearing Aid The Starkey CE ITE Bi-CROS was manufactured by Starkey Labs, Inc. in 1973. A Bi-CROS hearing aid is used by someone with a hearing loss in one ear and no hearing in the other. A hearing aid shell with a microphone is placed in the deaf ear and wired across to a hearing aid in the hearing impaired ear in order to pick up sound on the deaf side and transfer it to impaired ear. In this way, sound is amplified by the hearing aid for the impaired ear and mixed with the sound from the microphone at the deaf ear. |  | Click picture for larger view | | |  | | |
| | This is the part that is worn in the hard of hearing ear. It is both a hearing aid for that side and the receiver for the sound coming from the deaf side. The vent hole is at the very top. The volume control is the large dark circle in the center. The CE used a #13 battery.
|  | Click picture for larger view | | | | | This is the part that is worn in the deaf ear. It basically consists of an ear mold containing a microphone. The sound is sent to the hearing ear via the cord connecting them. If you look carefully, you can see the hole for the microphone in the center of the vertical "wall" of the ear mold.
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