Hearing Aid Guide

What makes a hearing aid?

Hearing aids are essentially a small voice amplifier with four fundamental parts: a microphone, an amplifier, a speaker (receiver) and a power supply. All hearing aids are made up of these four parts, no matter what type or size.
Types of Hearing Aids
hearing aids

Here’s a basic breakdown of how a hearing aid works:

  1. The microphone collects sound and transforms it into an electrical signal.
  2. The receiver collects the electrical signals from the amplifier and transforms them back into sound.
  3. The amplifier between the microphone and the receiver raises the signal of the sound before sending to the receiver.
  4. The recipient then sends the sound to your ears.

Digital hearing aids

The emergence of digital signal processing has totally reinvented hearing aids, allowing researchers and producers to considerably improve the experience of wearing hearing aids.

These contemporary hearing aids form the majority of the instruments available today and have several advantages, including:

  • Improved voice comprehension in busy environments
  • Increased feedback-free gain
  • Better speech comprehension
  • The ability to adjust instrument settings to suit particular hearing needs

different styles of devices

Types of hearing aids

There are many types of hearing aids and sometimes the amount of choice can be overwhelming. In order to help you decide which type is right for you are some of the most common types and the benefits they provide.

Behind-the-ear (BTE)

Behind-the-ear (BTE): Most of the components of the BTE hearing aid are contained in a small plastic case that rests behind the ear; the case is linked to the earmold or earpiece by a transparent tube. Favored by those who need higher-power hearing aids, BTE hearing aids are simple to clean and manage, making them a useful option for those with dexterity problems.

Receiver-In-Canal (RIC) / Receiver-In-Ear (RITE)

Receiver-In-Canal (RIC) and Receiver-In-Ear (RITE): The RIC and RITE hearing aids are both pretty similar to the behind-the-ear hearing aid, but they have a small wire which connects the case and the receiver, instead of a tube. They still have the greater amplification and a battery life you would expect from a BTE hearing aid, but they are housed in a much more discreet package.

In-the-ear (ITE)

In-the-ear (ITE): The ITE type comes in two types. One is designed to fit the whole bottom half of the ear, while then other only partially covers the bottom half of the ear. Since this is a full-size hearing aid compared to the in-the-canal offerings, you will begin to find additional features such as volume control and increased amplification for those with higher levels of hearing loss. Hearing aids of this size are also easier to handle and have a longer battery life than smaller types. This means they are often seen as a good balance between size and features.

In-the-canal (ITC) / completely-in-the-canal (CIC)

In-the-canal (ITC) and completely-in-the-canal (CIC): These hearing aids are some of the smallest around. All the working components fit partially or entirely into the ear canal. This makes them among the most discreet type, perfect for those who would prefer not to draw any attention to their hearing loss. Since their microphones are in the ear canal, they also provide a more natural listening experience.

Hearing Aid Batteries

Two kinds of hearing aid batteries are available – rechargeable and disposable.

Rechargeable hearing aid batteries


Whatever the type, model or manufacturer, a wide range of hearing aid accessories are available to improve the hearing aid experience.

  • Most contemporary hearing aids are Bluetooth-enabled which means that the hearing aid can be connected to other electronic devices such as your smartphone or TV.
  • Remote controls can enable users to set and alter hearing aid settings without using a tiny dial or button. This is especially useful for smaller types of hearing aids.
  • Small, wireless microphones can really help improve speech comprehension during important conversations in noisy environments.

We offer a complete range of hearing aid accessories to help you get the best out of your hearing aid.

assistive listening devices