Not to sound like a flake, but some of my components sound better on wood, others thrive on different materials. Just putting wood over glass may not get you where you want... might want to put some kind of vibration isolation--rubber pucks (or their more expensive cousins), one of the ball bearing systems (aurios, fim, etc.), air (try a bicycle innertube inflated just enough to raise the wood), even sand (build a small sandbox).
There's lots of room for hours of DIY fun here...
good luck,
brent
There's lots of room for hours of DIY fun here...
good luck,
brent