Its very rare that a speed control doesn't enhance sound quality. It should be a nice upgrade. If you don't want to spend $1000, Sutherland makes a really good one for $400. Cable Company is a Sutherland dealer, They'll send send you a demo unit to try in your system.
https://www.thecableco.com/Product/Timeline
If you want to know the difference between the sds and the and the ads, call Hollywood Sound in Hollywood Florida. 90 percent of his business is TT related. I can't think of anyone more qualified. He's also known for good deals.
https://www.thecableco.com/Product/Timeline
If you want to know the difference between the sds and the and the ads, call Hollywood Sound in Hollywood Florida. 90 percent of his business is TT related. I can't think of anyone more qualified. He's also known for good deals.