A free app for Android, by Polyvox Tecnologia Digital.

The Polyvox Audio Control app is the easiest and best way to control your audio playback from your mobile phone. It allows you to adjust music volume, bass, mid, and treble.

The app is also an equalizer and allows you to adjust the intensity of each band. You can choose the colors of the light effect, turn them off, or set them to a particular level.

You can also turn on or off music from your USB card or SD card.

The Polyvox Audio Control app also allows you to save the best radio stations in the region as favorites.