Equalizer - Bass Booster and Volume Booster can improve the sound quality of your phone, the eq and bass can make music fun. It is a media equalizer which can also change the original sound quality. You can use it for any media player (music player, video player, etc.) Equalizer - Bass Booster and volume booster has 6 volume modes for you to choose, such as music, normal, meeting, outdoor, mute, sleep and custom, you can choose these modes according to your situation. Equalizer - Bass Booste