Quatro Wood best feet


What is best isolation fee for Quatro Wood speaker other than stock spike, maybe not granite either since I have stone tile, and concrete underneath. any advise will be appreciated!

Best Regards
Zee 
zensview
I actually did that, and RV suggested 2inch black granite with stock spike other than isolation feet. But I have stone tile floor, and concrete underneath so I though I may just need a pair good feet.
You can try the Iso-Acoustics Gaia and if they don't sound any better send then back through Amazon. 
Start with the Vandersteen spike shoes, machined Aluminum cups the spike fit into
they have a felt pad to protect your tile.
they will also preserve the geometric relationship in the manual for tilt, ear height, distance to speaker.
iMO start there. Award winning sound possible that way.....