What's under YOUR turntable?

I'm using Black Diamond Racing's carbon fiber Source Shelf under my Michell Orbe SE, and it sounds marvelous. BDR cones support the Source Shelf which sits on an Plateau MDF rack. I think carbon-fiber has tremendous potential as a damping sink for turntables and other components. If you can swing the price, I'm sure you'll be impressed with its performance. The stuff looks impressive too -- so very high-tech. :)

Genesis168 makes a good point -- the BDR carbon fiber pucks and cones are very cost effective and will give you a large percentage of the performance of the more expensive Source Shelf.

The Mapleshade solid maple platforms and brass cones also seem to have merit. Although I haven't used them in my system, I've heard from other folks that they perform very well.

Since I've turned 50, I've been thinking twice about buying very heavy components that weigh well over 100lbs. I'm sure some of these things work great, but I'd hate to sustain a permanent injury in hauling some massive slab into position. I'll leave that to you younger folks. I know it's funny to joke about such things, but if one does actually manage to get injured the humor quickly fades.