This mod enables you to adjust the volume on most Stern SAM, SPIKE, SPIKE 2 & SPIKE 3 system pinball machines without opening the coin door. The unobtrusive switch is mounted in the extra opening just below the start button (if a tournament button is installed in this opening it will have to be removed). This button can be used anytime when the game is on or being played. Installation is simple and no permanent modifications to your game are required. Complete instructions are included.

• This volume controller WILL work on all Stern SPIKE, SPIKE 2 & SPIKE 3 machines, both exported & USA domestic.
• This volume controller only works on Stern machines that have an existing square recess or plugged hole just below the start button on the front of the machine.
• NOT compatible with non-USA (exported) SAM system machines!