A free app for Android, by superstudio10.app.

Super High Volume Booster is an all-in-one speaker with headphones volume, equalizer, and music player. It’s very user-friendly due to its simple interface, and also comes with very amazing graphical designs.

The application has a built-in amplifier that will increase the volume of your smartphone by 30% to 40%. The amazing thing about this is that the quality of the sound is still amazing despite being so loud. You can also modify the sound by using the 5 Band Equalizer with Bass and Treble effect.

Experience and enjoy this amazing app! Maximize the boost sound volume of your phone with just a simple touch.