A free program for Android, by Lv App Studio.

In this free app for Android phones and tablets, you can get the best sound effect for your device. It has a built-in equalizer that lets you adjust the sound effect levels so you can listen to great music. You can also choose the frequency for each band. You can set the frequency to a value that you want. The app also lets you turn the effects on and off.

The app works with music players and audio streaming services like Pandora, Spotify, Saavn, Gaana, etc. With a system-wide equalizer, you can enjoy professional audio quality on your Android device.