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How Do Hearing Aids Work?

person placing hearing aids in ear

If you have trouble hearing, you may often wonder to yourself, “How do hearing aids work?” This is an understandable question, as hearing aids are incredible innovations that are life-changing for many people.

Here at Otofonix, we want you to have a clear understanding of how digital hearing aids work. This will also help you to better understand your hearing loss. Our guide can make it easier to find the best unit for your needs if you have yet to invest in a hearing aid.

If the type of hearing loss you have makes it difficult to understand those in front of you, our Sona hearing aid may benefit you well. If you find that you need all sound louder, our Encore hearing aid is our loudest unit available.

After you have learned about how hearing aids work, we encourage you to explore our website for details on the many models we offer.

How Do Hearing Aids Work?

Digital hearing aids are designed to be customized to a person’s hearing loss. Hearing aids help to improve sound quality by using a microphone amplifier. This amplifier increases the sound waves around you and delivers them directly into your ear canal.

Understanding Hearing Loss

Before you choose a hearing aid, you should speak with a professional audiologist or take a hearing test. After you have completed a hearing test, you will have a better idea of what kind of hearing aid you need.

Hearing aids are programmed to meet the needs of various hearing loss levels. Digital hearing aids come with automatic features that let you adjust the volume to make sounds louder or set programs that are designed to improve your hearing in certain environments, such as eliminating background noise.

Benefits of Otofonix Hearing Aids

Our behind-the-ear (BTE) hearing aids come with many advantages. As such, our hearing aids help you to enjoy a better hearing experience through advanced sound technology and helpful features.

Listening Programs

Our hearing aids are equipped with multiple listening programs that are designed to customize your listening experience. Our Apex hearing aid is most suitable for people with mild hearing trouble.

It has 3 listening programs and 8 volume levels. With this, a person can enjoy normal hearing thanks to a combination of the Apex’s advanced and basic components.

If you require optimal background noise cancelation, our Encore and Helix hearing aids may serve you best. These digital units are equipped with a computer chip that helps regulate the sound waves into electrical signals for clear hearing.

What’s more, the Helix comes with a built-in rechargeable battery. Now you don’t have to worry about replacing your battery. Simply place your Helix devices in the included dock for easy recharging.

Directional Microphone

Directional microphone technology ensures that you will be able to detect sounds clearly without interference from background noise. If you often struggle to hear people in front of you, you need hearing aids with a directional microphone.

Thanks to a built-in amplifier, increases in volume help you to hear sounds that you would normally find difficult to detect.

Online Hearing Aids

Our hearing aids don’t require a doctor’s prescription, thus giving you the freedom to pick out the hearing amplifier that suits you best. What’s more, our hearing aids cost a fraction of what you would pay for prescription devices.

The styles of our hearing devices are designed to fit comfortably behind your ear, with an ear mold delivering the sound directly into your inner ear. Whether you need a left or right hearing aid, or both, you can look forward to saving a significant sum of money while enjoying inconspicuous hearing improvement.

Free Hearing Test

That’s right; we are pleased to offer a free hearing test via our website. We encourage you to take this test at your leisure to help you determine the level of your hearing loss. Once you get a better understanding of the different types of hearing loss, it will be easier to select the best hearing aid for your needs.

And remember, you don’t need to see a doctor (although we do recommend it). Simply browse our catalog of different styles to compare and find which hearing aids will benefit you.

What Are the Side Effects of a Hearing Aid?

Hearing aids may cause intermittent headaches as your body adjusts to them. This should eventually subside as you get used to wearing your hearing aids.

Some hearing aid wearers feel an itching sensation in their ear canal, as well as minor discomfort. The more you use your hearing aids, however, the less this will be an issue.

How Do You Know if a Hearing Aid Is Working Properly?

The best way to check your hearing aids to ensure that the receiver is functioning properly is to gently rub the microphones. If the microphones are on and active, you will hear a scratching sound in your ear.

Otofonix Sona Hearing Aid

The microphone is located on the receiver itself. To locate your microphone, check the receiver for what looks like a small speaker, typically 2 or 3 small, horizontal or vertical lines. If you need further help with this, check the diagram above.

You can find a wealth of information about our digital hearing devices and other related topics throughout our website, so feel free to explore. If you have any questions, our sound specialists are happy to assist!

Meet Our Family of Hearing Solutions


Reduce unwanted background noise so you can focus on what you really want to hear.

$490   $245


Discrete and nearly invisible, simple and easy to create a personalized experience.

$1,490   $595



All the benefits of the Encore, plus the convenience of being rechargeable.


$1,390  $695



Create a personalized experience to meet your unique hearing needs. 


$1,590   $795
Dual Color Otofonix Hearing Aids


Digital Hearing Aids

Starting At


Per Ear

or $124

was $249

Elite-Best-Value Otofonix Hearing Aid


Digital Hearing Aids

Starting At



or $199

was $399

Most Popular Otofonix Hearing Aids


Digital Hearing Aids

Starting At


Per ear

or $299

was $499

Otofonix Hearing Aids


Rechargeable Hearing Aid

Starting At


Per Pair

"Only Sold in pairs"

or $745

was $1299

Not sure which hearing aid is best for you?

Compare different models to find the one that suits your needs







as low as $495

as low as $695

as low as $595

as low as $795

Sound Environment Settings
Programs or environmental settings that allow you to optimize performance for noisy, quiet, or social situations
Digital Sound Processor
All Otofonix Hearing Aids are 100% Digital because they all use a DSP Chip. Without a DSP, noise-canceling is not possible.
Noise Canceling
Uses a digital algorithm to reduce background noise more effectively in noisy and challenging environments.
Directional Microphone
Makes it easier to focus on sounds coming from in front of you, and allows for more advanced and effective noise cancellation
A telecoil acts as a receiving antenna for your hearing aids. When you connect with a sound system of a theater or church, you get amplified sounds delivered directly into your hearing aids. So no matter where you are in the theater, you automatically have the best seat in the house. Only the sound from the hearing loop's microphone is amplified, while background noise is shut out.
Wear your device all day and charge when you go to bed. No need to handle tiny hearing aid batteries
Smartphone Compatible
Adjust your Otofonix Bluetooth Hearing Aid with your smartphone via the Otofonix App. No need to draw attention to your hearing aid; you can adjust it by using only your phone.
Personalized Hearing
Using the Otofonix App, you can customize your hearing aid to meet your unique hearing loss profile. It's like having an audiologist in your living room.


Volume ControlRocker SwitchRocker SwitchSmartphone AppSmartphone App
Battery Size312Rechargeable13Rechargeable
Battery Life6-8 Days18 Hours4 - 6 Days18 Hours
Device Dimensions1.2" x .55" x .28"1.5" x .31" x .5"1.2" x .31" x .48"1.2" x .31" x .48"





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