Hearing aids are like superheroes in the world of hearing, bringing hope and strength to those with hearing loss. They enable them to rediscover laughter, music, and the love of family and friends. So, how does this guardian of sound achieve the effects of hearing assistance? Today, let's explore together!

The Core Components of Hearing Aids

First, let's take a look at the "four essentials" of hearing aids, which constitute the basic components of all digital signal hearing aids.


The microphone picks up sounds from the surrounding environment and converts them into electrical signals.


The amplifier filters and processes the electrical signals from the microphone, amplifying the sounds that are meaningful to the user.


Also known as a speaker, the receiver converts the electrical signals into acoustic signals that the user can hear.


The battery is the power source for hearing aids, with a typical lifespan of 5 to 14 days. In recent years, with advancements in battery and charging technology, more rechargeable hearing aids have emerged.

Other Components of Hearing Aids

Due to variations in size and model, some hearing aids come equipped with additional functional hardware. These features are determined based on the user's lifestyle, needs, degree of hearing loss, and after consultation with hearing experts. Here are some examples:

Ear Hook

Ear hooks are common in behind-the-ear hearing aids and have a crescent shape. They connect to the hearing aid earmold or earpiece, serving the dual purpose of transmitting sound and providing stability.

Earmold (Earplug)

The earmold is an acoustical accessory crafted based on the user's ear canal and outer ear shape. It channels the output sound from the hearing aid's receiver to the ear canal. Since everyone's ear canal and auricle structures differ, earmolds need to be customized, and consultation with a hearing care professional is necessary to determine suitability.


Vents are often found in custom hearing aids or earmolds. With this small opening, air can freely flow in and out of the ear, aiding in infection prevention, reducing the feeling of ear blockage, and minimizing feedback.

Wax Guard

The wax guard is a tiny filter located at the sound outlet of the hearing aid. It helps prevent dust, earwax, and other foreign objects from entering the hearing aid, avoiding damage to the electronic components. Regular replacement is necessary.

Volume Control

Users can adjust the volume of the hearing aid through a volume control button, though not all models include this feature. Nowadays, many hearing aids offer volume control through a smartphone app or wireless accessories.

Program Control

Users can manually press a button to switch between preset programs. Not all hearing aid models include this feature, and many modern hearing aids allow program switching through a smartphone app or wireless accessories.


The telecoil is used to pick up magnetic signals. In environments with alternating magnetic fields, such as stadiums and theaters, it transmits sound to the hearing aid through magnetic signals.

Consult with Hearing Experts for Personalized "Superhero" Assistance

With a variety of hearing aid types available, it's crucial to choose one that suits your needs. Feel free to consult with your local authorized Chosgo dealer and hearing experts. They will tailor a personalized hearing solution based on your individual needs, preferences, and lifestyle. Empower yourself to capture everyday sound details, nurture your hearing, and let it become your personal "superhero."

Discover the range of Chosgo hearing aids at Chosgo. Explore specific products like the SmartU Rechargeable Hearing Aids and browse the entire selection of Chosgo hearing aids, including cic rechargeable hearing aids.