I went to a local cabinet shop, they had 3'x9' plank about 4 inches thick. $100. God, what a beautiful piece of wood. It makes walnut look like plywood. I had the guy cut large slabs/blocks to put under my units. Another $25. I now have the most beautiful cutting board in my kitchen as an unexpected bonus.
I did this for aesthetics, not sound. My 53 year old ears don't notice any real sound difference, maybe it's my gear and my old ears. But it looks great, and I know that if there is a difference, I've done it top of the line. Looking at it makes my listening experience more enjoyable.
