What sets sound booster plus from other similar applications is that when a user activates volume boost this app not only amplifies the sound to the end, but also uses the built-in sound android equalizer to optimize the frequency channels by means of a special algorithm. So the result is a stronger and clearer sound. For best results, please plug-in your external speakers or headsets. Why you will have to download and install sound booster Plus app on your android Smartphone or tablet instead