Sound Booster that Works! Liliana Gunn 3 years ago The first and only Volume booster, that works with Youtube, Soundcloud, Pandora and so on. Supports HTML5 and flash video Volume boosting. NB! To switch on full screen mode – you need to press F11 key! Features Level up sound more than 800% in 3 steps You need only one click to boost the sound Switch off automatically in normal mode