Butcher BLock Acoustics under turntable

layer corium with sorbothane sheets

Congratulations on the new table, the butcher block shelves are nice but found them to come up a bit short on performance by themselves. I own a VPI Prime with the SDS and peripheral ring clamp, started out with the Timbernations 24" X 18" X 3" maple shelf placed on top of my Arcci Lead Balloon turntabe stand minus the lead, the biggest improvement came when I added Symposiums Acoustics footer inserts the outcome was great which caused me to trust Symposium Acoustics again and purchased their 24" X 18" Symposium ISO  platform which is specifically designed for unsuspended turntables and this is where I am stopping, nothing more needed on the isolation front. I have just added a Single Motor Flywheel Assembly to my Prime and just took possession of a 2 8" X 20" Symposium ISO and a 28" X 20" X 3" maple platform to have enough room to support the new SMFA. Please check my current add in tweeks for the shelf and the Symposium ISO. 

I have used 4" maple under my ScoutMaster when I had it. I prefer a sandbox. I have one under my Teres now. Having done a lot of experiment with footers, etc, mostly under my cdp, I can tell you that the material makes a difference in the sound. I suspect it also does with a TT.  IE, I use roller blocks under my CDP. The harder the ball's material, the more high frequencies are pronounced. Conversely, softer material, IE wooden balls extend the lower frequencies. My wife was surprised when I showed her the difference between the materials used. I say all that to voice my concern for stone. One caveat to my concern however is the weight of 165 lbs will certainly remove unwanted vibrations. AND IF your system tends to lack the high frequency extension, then maybe stone is a reasonable material. Everything is system/room dependent. There is no one size fits all.

There is a pretty comprehensive thread discussing maple butcher block under a VPI table.  Very recent.  Might want to search for it.  

@OP  Your VPI SP will fit on this maple butcher block.recently listed on AG....

https://www.audiogon.com/listings/lis94792-butcher-block-acoustics-24-x-18-x-3-maple-edge-grain-audio-platform-speaker-stands-mounts