Best wood under audio components?

@korakotta: I made my bookcase/ stereo rack out of maple because that is the hardwood species I had on hand.  In retrospect, I should have made it out of cherry to match the rest of the furniture.  My view is that this is an aesthetic choice not something that influences the sound of a system.  I would go with what you have available.

  

Depends what components and whether you are trying to damp the sound. Check out the comparitive hardness of woods here.
The harder the wood, the "harder" the sound. By harder, I mean more focussed, detailed and perhaps brighter. The softer woods will sound more mellow. But, as with anything, YMMV and different wooods can impart their own subtle color. 

There are 2 levels only on my rack. The top is the TT (VPI Classic 1), the phono (Gold Note PH-10) is under. Both of them are sitting on sandbox. Each sandbox has a tile placed directly on the sand. The middle layer is a tube, and I am trying to find the top layer`s material
I managed to get a maple board (Shun Mook) under my TT, so I am looking for the wood under my phono.

+Both of my studio monitors (Dynaudio BM5 Mk3) under their factory stand (sittin on sand)
 
What would be the wood of your choice? -not maple, not baltic birch ply-

Yeah, ideally depends on components and on what you try to accomplish. But the OP is not going to listen to dozens of woods under all his components. I would just choose Michigan Maple or maybe Black Arkansas Walnut and call it a day. In any case, what's under turntable is of course most important. I prefer natural materials, generally speaking.