I recently received a HFx Count Dooku FX saber, and I'm already planning to convert it.

To any of you electronic experts, what would be a small device/circuit that would amplify the voltage from the MR board to like 12v what a LEDengin 10 W red needs?

Also, I would need to know what would be the best 10 W red since there are many on Mouser.

Thanks..