It cannot be denied if the function of the sense of hearing is very influential in social activities. Hearing aids is one solution if you experience hearing loss. To evaluate the condition of the sense of hearing, it is necessary to have a hearing test. If the examination results indicate hearing loss or deafness. Then the doctor may suggest the use of hearing aids. Hearing aids are not able to restore your hearing to normal, but this tool can strengthen the reception of unclear sounds and reduce loud background noise. That way, you can hear better. This electronic device is able to help someone who has a hearing loss, to be able to hear and communicate better. This tool consists of three main components, namely the microphone, amplifier and speaker. The working principle of this tool, the sound will enter through the microphone which then converts it into an electrical signal and sends it to the amplifier. Furthermore, the amplifier is tasked with increasing the signal strength