For sale is a VPI SDS with less than 20 hours use. I purchased it new in January and am selling for financial reasons. Shipping and PayPal fee included in asking price.
$800 from 98332
See my feedback on Audiogon under jeff_ss
The Synchronous Drive System (SDS) combines a turntable motor speed controller and a line isolator into one convenient 16" x 3" x 12" (W x H x D) package. The SDS allows for the adjustment of both the voltage and frequency fed to the turntable motor. Adjustments are easily made from the front panel using intuitive, soft touch controls. The selected output voltage and frequency are shown using large, easy to read LED displays. The SDS slowly ramps the voltage and frequency up or down to the selected value in order to prevent premature motor wear due to abrupt changes. During motor startup, the SDS increases its output voltage in order to bring the platter up to speed quickly. Once the desired platter speed has been reached, the SDS ramps the output voltage down in order to reduce motor vibration and, therefore, the systems noise floor. The SDS works best with synchronous motor driven 115-volt turntables such as those from VPI, but can be used with other turntable motors as well.
