Ther'ye coming out with Multiwave ll # which I will be receiving today. Supposed to clean up power supplies and transformers and more increments for turntable motor control. I can't imagine using the P-300 as a motor speed control with a VPI SDS and the Walker. Wish I could afford a P-1000 as my amps draw 600 watts. Have a High Current Ultamite Outlet for that.