Turnable Rack Vibration

I have a modest analog front end, but I have been able to maximize it's performance with isolation. You may be able to use your granite slab to do this. I use a Brightstar Audio BigRock2, (a sandbox, basically), which is supported by four steel coil springs. I am using a wall-mount support, but I believe it will work on your stand. I installed brass spikes to drain vibration into the box, but in your case, more isolation between the plinth and sandbox might be the better approach. It sounds strange, your table being supported on springs, but you soon get used to the motion when touching the table. I do think in your case, the sandbox might be indispensable.
If you try it, I think you may be surprised at how much relief you will get.

Regards,
Dan

All very good points, Ns. The wall mount is the easiest, most effective (for the price) solution. I considered it worth a try in Neil's situation, first without the wall-mount. I have seen this method used on top of racks and table supports that were located on the floor. The supplier of the information insisted the isolation was effective. I know only that with my installation, the results have been superb, the arm and plinth drain into the Brightstar, and the springs isolate the table. The wall mount is however, a major contributor to its sucess.

My judgement is that it is worth a try, not much cost involved, and may be retained and used in the final solution.

Regards,
Dan

I earlier in this thread recommended the Target wall shelf, only bcause it works, and it's cheap (relatively). To level the top shelf, I placed a 3/16" thick! steel bar behind it, with a backing of sorbothane. It pissed me off, I thought the damned thing was made in England, maybe it is, but whoever built it did a piss-poor job if it.

Dan