If you want to restore the Vocalist® Live 4 to the state it was in when first delivered, you can use the Factory Reset function. This will:
1) Copy all Factory presets to the corresponding User presets, overwriting all changes you may have made to the user presets.
2) Restore the state of the Utility parameters to the factory defaults (FXFS ALL, HARMFS TOG, GTRSENS LO).
3) Set the Stereo/Mono state to Stereo.

To perform a Factory Reset procedure
If you are editing a preset, press the Up or Down footswitch to exit edit mode.
Press and hold the Major/Minor button and then press and release the Store button.
The display will read FAC RESET- WILL ERASE ALL YOUR PRESETS… , then STORE=RST.
Press the Store button again to continue with the factory reset.
If you don’t want to do the factory reset, just wait 5 seconds, or press almost any other button, to cancel.