27ENThema:SetupAmpliefier (EQ and Fader setting)The user can present a sound effect: Rock , Pop , Jazz , Classic , Flat , Voice ormanualy adjust the slider to set the value of sound effect: Custom .LoudnessTouch the - sensor key to turn on or off of loudness.Fader and BalanceTouch the - sensor key to enter the sound field mode page. The user can dragthe ball to adjust the sound output mode manually according to the position of thevehicle. Or choose a setting from three presets: Driver , Front or Rear .NavigationChoose the application you want to use for the navigation.