Equalizer FX : Cool EQ funtion change the music quality and improve the sound quality of your phone. Volume booster: Music Equalizer with Bass Booster , the voice of your phone that can be used becomes louder Bass booster: Enhance the bass effect of music. Speaker Booster and Sound increaser can boost volume when you play music. Sound effect presets: A variety of different sound effect presets make music more interesting You can use music player, video player, etc , the equalizer change t