A free program for Android, by Valentine Video Maker.
Volume Booster Sound Booster Music Equalizer is a professional audio app that is designed to boost volume and play music at the same time. It allows you to set volume levels for different sources such as music, games, ringtone, notifications, and alarms.
You can choose from 5 different bands and 10 different presets to make it easier for you to adjust the sound to your personal preference. The sound quality is excellent, and you can adjust it with the help of a slider.
With the Bass Booster function, you can amplify the bass of your music and audio files. You can also boost the sound of your media files with the Volume Booster function.