FWIW, I have Geoff's Promethean Base under my turntable, but use Ken's Neuance shelf as the top platform. I find them both to be exceptional products. The Neuance shelf was an improvement when placed under my Spacedeck on the existing rack. But moving the whole setup to the floor and adding the Promethean garnered a pretty significant improvement in performance. Hats off to both of these gentlemen.
Oz
Oz