Granite under wood for better isolation?

I went the granite route under my table as well, and then discovered what a mistake it was. Granite rings at fairly high frequencies so you can hear the smearing that results. But it looks wonderful, Dakota Mahogany granite.

I also tried a hard maple shelf before the granite, which was also a mistake with my table. The wood tended to soften attacks so the wood smears in another way.

Best solution I have found so far for my stand and table is to use Stillpoints between the granite and table plinth. The vibrapods would probably work also, but I would suggest listening for any softening in the bass and in attack. I'm not really sure how much they allow movement since I have not used them. I do hear slight loss of bass slam with the Stillpoints, but I can live with that until I find a better solution.

Best of luck. Don't get discouraged, you may have to try several things until you find something that works well for your equipment and tastes.

I live in Manhattan so I have the benifit of living in a very largehigh rse building 27floors. I live on the 11th and while pondering the best solution to TT isolation. I was in my lobby while waiting for an elevator the Otis repair were working on an out of order elevator. I then reasoned that the shocks at the bottom of the pit were very large industrial springs and according to Otis weighing in at over 1200lbs per spring. Well I can tell you my audiophile juices really perked up and after precurring a pass key to the bottom shaft door. That night I was salivating with the thought that I have finally found the ultimate tweak. So sneakerly I took my TT down and very gingerly placed it on all 4 springs using a large piece of wood in the basement. I centered it and now the larger problem running a long phono cable up to my adcom 565 pre. Well being an audiophile this would never stop me or any. So of course with fleet of foot next day while the TT lay dorment on all 4 springs I ran to my nearest RAT Shack and bought 2400' of copper cable and yes done at last the best isolation system for a TT for next to nothing unless you count the extra long phono cable but I am an audiophile and must do all to get the best out of the system. You are all wondering how it all sounded this new found mass of isolation at the bottom of my buildings elevator shaft. I cued up an lp and with fast of foot ran up 11 floors to just make half the lp and it was a miracle. The soundstage and images were just the best "JAW DROPPING". But everything is not all pretzel's and beer. I had to time the end of each lp and dash out the door and run down 11 flights of stairs open the elevator shaft doors and lift the tonearm flip the lp and start all over again.I reason that this tweak will not only make every TT sound its best but keep all who try it in the best shape of their life.I thank you all and recommend this to all who live in a high-rise building with access to their elevator shaftway.

No, unless you have some visco-elastic feet or springs under your turntable, what you are actually doing is coupling (*not* isolating) your turntable to these materials. And every time you add another platform, you are introducing additional natural frequencies, since every material "rings" the loudest at a different frequency.

Schipo,
That is the most awesome audiophile story I've ever heard. The fact that I used to live in Manhattan makes it even better.

Schipo - Like Actusreus, I found your story fascinating and as they say, above and beyond the call of duty. You are a true audiophile in every sense of the word, not to mention, energetic beyond belief!!