Pioneer AVIC-S2 - Manual (Page 22)

4. To return to the control panel, tap .
2.5 Equalizer
The program provides 11 preset audio profiles. Tap to open the equalizer
panel.
Tap or to cycle through the available options: Default, Hall, 3D,
Soft, Disco, Heavy, Dance, Jazz, Classic, Pop and Rock.
Tap to save your selection and return to the control panel. Tap to
cancel your selection and return to the control panel.
To select the Default profile, tap .
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