Music Volume Equalizer. This free app offers a five-band equalizer to adjust your Android phone's audio output. The equalizer can be either added to the home screen as a widget or initiated from the icon in the notification bar. It works with most music players (including the default Android one) and the effect is best felt when using headphones. You can choose from various available presets or create your own custom setting. Dedicated dials for bass boost and visualizer are also present to make quick adjustments rather than using presets. The only issue is that the equalizer is ad-supported — ads are visible when adjustments to various levels are being made.
