A free program for Android, by Alana Robins.
Equalizer – Bass Booster, Volume Booster is an Equalizer for Android that can boost the sound of your Android phone. The app allows you to make adjustments to the sound, such as bass, surround sound, and more.
You can choose from five presets like normal, classic, dance, folk, and heavy metal. You can use your own music instead of the presets.
You can adjust the sound effect levels so that you get the best out of your music and audio play. You can adjust the effect on the music and video. You can add extra volume to your music and video.