Graphic Equalizer Controls
You can customize your listening experience with the built-in five-band equalizer found at the right of the music controls.
Want a little more bass, drag the far left 31Hz bar up to the top. As you drag the gray bar, it will indicate how many levels you are going above or below the default setting.
If you want to return to the default level, just drag each bar to the middle setting, where the indicator box shows a zero next to the frequency range, instead of +1 or -3.