Hi folks, I have owned a cortese for 2 years and have been recently going through the isolation issue with DIY racks and isolation platforms. I removed feet from pre and PS added a solid hardwood 20mm base ( left the metal base by screw fixing it through the exisitng holes). I then separated it from the isolation base using a DIY version of a roller block - made a definite improvement in clarity and solidity.
Cheers,
Phil
Cheers,
Phil