It’s called Sound Amplifier. If your Google Pixel is running Android 6.0 or higher, you may have noticed a green icon with an ear, but you may not have known what it does. The Sound Amplifier ...

The Sound Amplifier app for Android lets you reduce noise, amplify quiet sounds, and boost high or low frequencies, and you can apply different settings to each ear. It requires headphones ...

The amplifier cranks the audio signal to a level so that your ... you should seriously consider buying one of the portable DAC amps for your iPhone or Android. From left (top) to right (bottom): ...