All hearing aids
consist of the four basic components: a microphone, an amplifier, a receiver (which is essentially a speaker) and a battery.
The hearing aid picks up sound through its microphone, which converts the sound into electrical impulses before being send to the amplifier.
The amplifier then increases the power of these signals and passes them through the receiver to your ear.
But not all hearing aids offer the same listening experience and comfort. Modern hearing aids have a computer chip, which is programmed by the hearing care professional to fit your needs.