Myles, In all cases of which I am aware, the platter of a DD turntable is "part" of the rotor, once it's fastened onto the rotor assembly, or, as in the case of the SP10 Mk3, the rotor and platter come off the chassis as a single piece. This is to say that the mere fact that the NVS platter is part of the rotor does not explain why the platter cannot be removed from the chassis. As some may recall, when the NVS first hit the market there were a few problems with shipping, owing to the fact that the TT shipped with the platter installed. I guess this led to some damaged bearings. But these issues were said to have been resolved. Since that brouhaha, I have not heard much of anything about the NVS.