A discussion around isolation solutions is also interesting for high end turntables. They are a must, IMO.
Right now I have a HRS R3X isolation base for my Clearaudio Innovation. If I upgrade my Innovation to the Master Innovation I will need new feet at a minimum, but have considered other options. One is to move up the line to the HRS S3 or even a M3X2. Another possibility is to get a HRS EXR 3-shelf rack, and put isolation bases on two of the shelves for my turntable and phono-stage. At that point I'd have room for a larger isolation base, so a Minus-K for the turntable is an option.