Demo VPI SDS Synchronous Drive System

In Stock	An In Stock item is available to ship normally within 24 business hours.
Preorder	A Preorder is an item that has not yet been released. Typically the label will set a projected release date (that is subject to change). If a projected release date is known, we will include this in the description in red. Other Preorders are set to release 'TBA.' This means that release date is yet 'To Be Announced'. The Preorder can be released anywhere between weeks, months or years from its initial announcement.
Backordered	An Out Of Stock item is an item that we normally have available to ship but we are temporarily out of. We do not have a specific date when it will be coming.
Awaiting Repress	Awaiting repress titles are in the process of being repressed by the label. No ETA is available at this time.
Expected On	When an item is Out Of Stock and we have an estimated date when our stock should arrive, we list that date on our website in the part's description. It is not guaranteed.
Special Order	A Special Order item is an item that we do not stock but can order from the manufacturer. Typical order times are located within the product description.

In Stock

An In Stock item is available to ship normally within 24 business hours.

Preorder

A Preorder is an item that has not yet been released. Typically the label will set a projected release date (that is subject to change). If a projected release date is known, we will include this in the description in red. Other Preorders are set to release 'TBA.' This means that release date is yet 'To Be Announced'. The Preorder can be released anywhere between weeks, months or years from its initial announcement.

Backordered

An Out Of Stock item is an item that we normally have available to ship but we are temporarily out of. We do not have a specific date when it will be coming.

Awaiting Repress

Awaiting repress titles are in the process of being repressed by the label. No ETA is available at this time.

Expected On

When an item is Out Of Stock and we have an estimated date when our stock should arrive, we list that date on our website in the part's description. It is not guaranteed.

Special Order

A Special Order item is an item that we do not stock but can order from the manufacturer. Typical order times are located within the product description.

Description

Save 15% on this Demo VPI SDS!
90 day warranty!
Only 1 available at this price!

The SDS is the perfect match for most VPI turntables! The SDS will NOT work with the Newer Versions of the VPI Classic 1, Classic 2 & Traveler Turntables with a 100-240V Switch-Mode Power Supply and Male Plug with 2-Prongs.

This unit works with any country's input voltage! (100 to 240v AC) and outputs 120v AC (your turntable must have a 120v AC motor!)

User friendly design, the SDS combines a turntable motor controller and line isolator into one 16" X 3" X 12" package. The SDS breaks new ground in clean accurate power delivery using advanced computer digital technology and quartz crystal accuracy.

The ability to adjust voltage and frequency being fed into a turntable motor was considered paramount in the design of the SDS. Both functions are adjustable from the front panel and results are shown in large, easy to read L.E.D. displays. All switching of speeds and voltages are done in a ramping fashion. There is no shock applied to the motor as the voltage or frequency is changed when moving between 33 and 45 rpm.

The circuit used in the SDS provides an incredibly accurate line frequency of great stability. Additionally, the electronic circuitry effectively isolates the output voltage from the input voltage, doing away with voltage spikes, low level fluctuations, RFI, and frequency variations.

Instead of merely filtering the power line, the SDS first changes it into pure DC voltage and then digitally regenerates its own clean signal. This approach is superior to that used in many of the other power line conditioners on the market.

The SDS works best with synchronous motor driven tumtables, such as those from VPI. The speed of a synchronous motor is determined by the frequency it is fed. It is only logical then, that a device whose speed is based on the line frequency will always function better when a stable frequency is delivered. A constant motor speed translates into a quieter, more faithful musical presentation.

Many historical recordings were not transferred onto modern records at the proper speed. Using the SDS, you can now correct the musical pitch of these recordings by varying the speed of your turntable. In addition, collectors who have VPI tumtables that run at 78 RPM will be able to accurately adjust them to compensate for the wide variation in recording speed used in the 78 RPM era.

The SDS is the perfect match for most VPI turntables! The SDS will NOT work with the Newer Versions of the VPI Classic 1, Classic 2 & Traveler Turntables with a 100-240V Switch-Mode Power Supply and Male Plug with 2-Prongs.

So, how do you know if your Classic or Traveler is a newer version? New Classic & Traveler Turntables have a male plug with 2 prongs, female plug that goes into the back of the table and a 'Switch-Mode' Power Supply Box in the middle of the power cord Original Classic & Traveler Turntables have a male plug with 3 prongs and the female plug goes directly into the motor.