MaxBoost (Volume Booster & Sound Booster) is an extra volume booster for all Android devices. It is able to increase the phone volume up higher than the max volume of media and system, and give you the hifi quality sound. No matter you're playing games, watching movies, listening to music, or listening to audiobooks, MaxBoost (Volume Booster & Sound Booster) can increase all the sound volume up to 200%. 🎺 Enhance the volume of media and system The MaxBoost (Volume Booster & Sound Booster)