I believe that hole is if you want to insert the screw footers so you can connect to component. I have symposium super plus platforms under my speakers and three sets of cera pucs - one set under each amp and another under my phono stage. I do believe still points may be a little better than cera pucs (I have 4 sets of still points) but have not done an AB on the same component.
Finite Elemente Cerabase vs Symposium Rollerblocks
Just wondering if anyone compared these two devices. I am considering using them under my transport. Other ones I am looking at are Equarack Equabearing and Aurios. Thanks in advance.