Sota Sapphire and Isolation?

I owned a SOTA Sapphire from the early 80’s, purchased new from the factory when it was still in downtown Oakland, CA by the Coliseum.   Nothing short of nuclear testing in the room would cause an audible issue.   That is a fabulous table.   I can’t speak for the current version, but I’d experiment with what you’ve got.   I wouldn’t be surprised to find that adding additional isolations does not help.

good luck and remember to just enjoy the music.

I use a wall mount and that cured any issue 

Thorens makes an isolation pad made with layers of some kind of foam.  Check it out, it's only a couple hundred bucks.

I have a non suspended SOTA and it seems immune to footfalls and rumble….   The Sapphire should be well isolated from subsonic stuff.   Enjoy

I own several SOTA and I was just happy listen to the music on a piece of MDF.

get Stethoscope and listen to the machine while running listen to the base top then the platter still and tap on the surface it on.

Great buy the new SOTA quite nice.