best support shelf/isolation device for a rega p9?

I have a p9 and it is in a softwood (cedar and pine) cabinet. I am looking for suggestions as to what others have tried for support and isolation. I've heard heavy granite may be worse than an ikea honeycomb lack shelf, I've heard aurios may work well on a maple cutting board, I've heard nueance shelves may be excellent. I have heard that sorbothane is not good. As you can see, I have heard ABOUT many things, but have not been able to try them yet. Would love to maximize the potential of the table.
I can't mount it on a wall shelf.
All advice welcome.
Thanks
f