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Parts of a hearing aid explained

Understanding the different hearing aid parts is of interest for anyone considering, or already using, these life-changing devices. By knowing how each component works, you can look after your hearing aids more effectively, ensure they perform at their best, and recognise when it may be time to replace a part or add an accessory.

Main hearing aids parts

Modern hearing aids are compact yet highly sophisticated. The parts of hearing aid technology include both external and internal elements, each serving a specific role. Whether you use a Behind-the-Ear (BTE), Receiver-in-Canal (RIC) or In-the-Ear (ITE) device, all models share common features that work together to improve your hearing.

Microphone

It captures surrounding sounds and converts them into digital signals.

Amplifier

It processes and strengthens the sound, making it easier to hear.

Receiver (speaker)

It delivers the processed sound directly into the ear canal.

Battery or rechargeable unit

It powers the device throughout the day.

Shell or casing

It protects delicate electronic components

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Behind the ear parts

BTE models are among the most common types of hearing aids. The behind the ear parts typically include the casing, microphone, amplifier, and battery placed discreetly behind the ear. A thin tube or wire connects to the earmould or dome, which sits inside the ear canal to deliver sound. Knowing the BTE hearing aid parts helps users maintain comfort and detect when professional adjustments may be needed.

In the ear hearing aid parts

For those who prefer smaller, more discreet devices, there are in the ear hearing aids. Their partsconsist of a custom-made shell housing the microphone, receiver and amplifier. The compact design offers ease of use but requires careful maintenance to prevent wax or moisture damage.

Receiver in canal hearing aid parts

Receiver in canal (RIC) hearing aid parts share similarities with BTE models but use a receiver positioned directly in the ear canal, connected by a thin wire. This arrangement often provides clearer sound quality and a more natural listening experience.

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Additional hearing aid parts and accessories

In addition to the essential components, many devices can be personalised with optional hearing aid parts and accessories that enhance comfort and usability. These may include custom earmoulds for a better fit, retention clips to keep the aids secure during physical activity, or sports locks designed for active lifestyles. Advanced users may also benefit from Bluetooth streamers, remote microphones and TV connectors, which make it easier to enjoy clear sound in noisy environments or during entertainment. While these parts are not required for the basic function of a hearing aid, they can significantly improve day-to-day convenience and overall hearing experience.

Hearing aid replacement parts and accessories

Over time, certain elements may need to be replaced. Hearing aid replacement parts include tubing, domes, earmoulds, wax guards and batteries. Regular maintenance and timely replacement of these small components can greatly extend the life of your device.

Many providers also supply hearing aid parts and accessories, such as remote controls, wireless streamers, cleaning tools and protective cases. These extras enhance comfort, usability and connectivity.

What if a hearing aid part gets stuck in the ear?

On rare occasions, a hearing aid part stuck in ear may occur, usually involving a dome or wax guard. If this happens, it is important not to try removing it yourself, as you could push it further inside. Instead, seek immediate professional assistance from an audiologist or healthcare provider.

Parts of hearing aids and their functions

To summarise, the parts of hearing aids and their functions can be grouped as follows:

  • Sound intake – microphones.
  • Sound processing – amplifier and digital processor.
  • Sound delivery – receiver and earmould or dome.
  • Power supply – batteries or rechargeable units.

By understanding what are the parts of a hearing aid and their purpose, users can manage their devices with confidence, improve daily performance, and know when to request professional support.

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FAQs on hearing aids parts

Can I buy hearing aid replacement parts?

Yes, many hearing aid replacement parts such as domes, tubes, wax guards and batteries are available through hearing care providers. However, for more complex repairs, it is recommended to see an audiologist.

Are there different parts in BTE, ITE and RIC hearing aids?

Yes. BTE hearing aid parts include a casing behind the ear with tubing or wires connected to an earmould or dome. In-the-ear hearing aid parts are built into a custom shell placed inside the ear. RIC hearing aid parts position the receiver directly in the ear canal for more natural sound.

How often should hearing aid parts be replaced?

It depends on the component. Domes and wax guards may need replacement every few weeks, while tubing and earmoulds usually last a few months. Batteries vary depending on size and usage, while electronic components can last for years if properly maintained

What accessories can support hearing aid parts?

Hearing aid parts and accessories such as cleaning tools, drying kits, remote controls, Bluetooth streamers and protective cases help improve performance and extend the life of your device.

Are hearing aid parts covered under warranty?

Many providers offer warranties that cover repairs or replacement of certain hearing aid parts within a set period. It is worth checking with your audiologist or hearing aid provider to understand the exact terms.
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