This is a VPI Synchronus Drive System. I used it with a Rega P25, VPI Classic and VPI Prime. It really helps to keep the speed of the turntable solid and locked in. The unit is in excellent operational/cosmetic condition.
From the VPI Manual:
"The SDS provides the line voltage that all domestic turntable equipment requires. The difference between the SDS's conditioned output and that provided by your local electric company is that the SDS gives you a highly stable, pure sine wave instead of the often "dirty," and unstable line frequency you get from your wall outlet. While there are other devices that filter spikes, surges, and R.F. noise, only the SDS provides a pure, double filtered, stable line frequency and voltage. The SDS is like a“Black Hole” for noise."
Asking
$850 $800 shipped in the USA.
