The Funk Firms own smoothing DC power supply!
Smoothie has been designed for all DC powered turntables, not just Vector, LSD and Gett!
Why a power supply? It reduces the work the servo performs, allowing for a smoother drive of the platter. It is normally supplied as 12V and delivers 1A of lab standard clean, fully regulated low distortion power.
Smoothie is also available in 24V for Technics decks, thus removing the on-board transformers and associated field.