Volume booster that works to amplify phone audio in just one change. In Advance part of Volume booster, you can amplify a specific frequency, 3D surround sound, bass booster and equalizer with high quality. When watching movies or listening to music using headphones or handsfree, it can works as volume booster for headphones, music volume increaser, volume booster for bluetooth and volume booster for watching movies. By using this app, you agree that the developer is not responsible for any damage to the device or to your hearing. Use at your own risk. We'd love to hear from you! [email protected]