[WARNING!]

This app is optimized for Android version 8.1 (API 27) and higher versions. It may work in some phones with lower android version.
Your device needs to support Google's AAudio API for proper functionality. Most devices running Android 8.1 or higher are expected to support it.
Your device needs to support Google's AAudio API for proper functionality. Most devices running Android 8.1 or higher are expected to support it.

If you use a sound amplifier without a doctor's prescription, your hearing can get worse.
Be sure to pair your car speaker with your mobile phone before starting the app.

It is a 64-channel personal sound amplifier app that minimizes the delay between external sound input and amplified sound heard through earphones using the latest technology.

AlgorKorea's hearing aid firmware & app development technology created Personal Sound Amplifier (PSA) app that includes all of the same four features as a smart hearing aid. The Personal Sound Amplifier app produces loud volume for profound hearing loss.

64 Channel Nonlinear precise Compression, Noise Reduction based on probabilistic analysis and Feedback Cancellation are the main features of AlgorKorea sophisticated Personal Sound Amplifier app. All of the three algorithms are implemented in real-time with high sound quality for hearing impairments.

The output audio level may be slightly different based on mobile phone’s volume settings, microphone and earphone/headset types.
In addition, due to the nature of using car speakers, it is difficult to perform calibration with professional equipment. Therefore, the user’s own audiogram is used for calibration.