What isolation feet under your amp with great result?

Tried Isopods, & Herbies Tenderfeet under two different integrated amps I own - Audio Note Meishu Tonmeister and an old AN Soro. Found that the sound became mushy and much less interesting to my ears. I've had the best results under each with some old Mapleshade brass footers (the heavier the better) that I've had forever. The approach that worked best for me was anchoring the music makers (amp, dac, etc) and floating the noise makers (TT power supply). For floating the TT power supply, I'm currently using a thermal isolation silicon foam pad from an surplus space-grade test setup (-58°C to +128°C at the time) we had at work with 3 Isopods on top of that. Hope you get to where you want to go.