Super Volume Booster – Speaker Sound Booster for android from iJoysoft

Volume Booster & Sound Booster: Powerful, simple, and user-friendly:

This program is very easy to use. Its user interface is intuitive and easy to understand. You can easily adjust your sound settings and increase the volume with a single tap. If you don’t want to use the built-in sound effect, you can use it as an external sound amplifier or a speaker. This app doesn’t need to be installed on your smartphone or tablet, you can use it as a virtual sound booster for your desktop as well. You don’t have to connect anything to your device or set up your sound system. Just open the program, choose your preferred output device (speakers, headphones, etc.) and start the app. Now you can hear sounds better than before. If you’re listening to music, you can use the built-in MP3 player to listen at higher volume. If you’re watching movies or videos online, the audio will be louder than before.