Turntable with stable speed.

I strongly disagree about Clearaudio, the DC motor and servo system is one of the worst wow + flutter I've measured. Servo circuits in general are very difficult, you have to pick an error level and time constant. With audio a fast constant gives flutter, slower gives wow, and slower gives too much long term drift. It is the way it is, and higher torque gives no solution. In the Clearaudio case this is played out poorly, (or we could say the weakness of a system like this is demonstrated well) with high speed instability.