I have a P-9. At the suggestion of my dealer, I removed the stock Rega feet and use Walker large cones/pucks. These sit on a 1/2 thick slab of solid steel plate with a soundcoated paint. this sits on the top shelf of my Solid Steel 5.4 rack. Rack's bottom points rest in brass receptors. I have had no problems with any kind of resonances/feedback.
I am told that the BEST way to isolate the Rega is to place it on the Rega wall shelf and mount that on the wall.
I am told that the BEST way to isolate the Rega is to place it on the Rega wall shelf and mount that on the wall.