The four basic types of hearing aids

There are four basic types of hearing aids common to most manufacturers. These types are: Behind the ear, In the-ear, In-the-canal, and Completely-in-the-canal. All four will help with mild to moderate hearing loss, but if loss is more severe, choices can be more limited. While aid size is the most obvious difference, each style has different attributes that are important to consider. Hearing aids worn behind-the-ear or in-the-ear can carry more sophisticated technology and more powerful amplifiers; they are also more durable. In contrast, new smaller models reside closer to the eardrum, and that proximity to the inner ear can help deliver a more natural sound quality. Your hearing professional will provide you with a recommendation and rationale that's based on your specific needs and physiology.

Behind the ear (BTE) Behind-the-ear aids have a plastic housing for the components which rests behind the ear. A clear plastic tube funnels amplified sound into an earmold in the ear canal. This model, though developed decades ago, can be every bit as sophisticated as smaller hearing aids. In fact, it can hold more circuitry and amplify sounds to a greater degree than in-the-ear types. BTE aids can be more durable than other types and a few are even waterproof.

In the ear (ITE) In-the-ear (ITE) aids house components in a custom-formed earmold that fits within the outer portion of the ear. Its size and easy-to-use controls also may be helpful for those with limited manual dexterity.

In the Canal (ITC) In-the-canal (ITC) aids are smaller still, with an earmold that fits down into the ear canal, and a smaller portion facing out into the outer ear. They are discreet, yet still visible within the outer ear.

Completely In the Canal (CIC) The newest generation of hearing aids are those that fit completely in the canal (CIC). Barely visible — and then only if someone's peering into your ear — the only clue to their existence is the head of a tiny plastic line with which you place or remove the aid. CICs are popular for their aesthetic appeal, but the physiology of some individuals' ears (i.e., a very narrow canal) may make this style unsuitable for them.

Click here to continue reading about Hearing Aid technology and the differences between Digital and Analog, and Conventional and Programmable hearing aids.