2024-09-13 00:00:00 Sound/Volume booster that works to amplify phone, headphone and speaker audio sound in just one change. Simple and small app to boost volume. In Advance part of sound booster, you can amplify a specific frequency, 3D surround sound, bass booster and equalizer. When watching movies on TV or listening to music using headphones or handsfree, it can works as headphone sound booster, music sound increaser, bluetooth volume booster and movie sound booster. Feature of Sound/Volume booster app.