We still have a nomenclature problem here. A "plinth" is simply any type of base or pedestal. All turntables have a base of some sort. The Simon Yorke's plinth is its' round base. The LP12's plinth is the wood-trimed case that supports the suspension, and the Rega plinth is he rectangular board to which the bearing, motor and arm are mounted. The Technics has a plinth too, it is the plastic case to which all of the guts are mounted. I think the original question really applies the the need for some type of mechanical isolation device for a turntable.
