What isolation feet under your amp with great result?


I'm looking for more cleaner, micro inner details. Not tone control or dynamic.
Amp is 82-lb. TIA
128x128nasaman
rlb61,
Great suggestion trying these EVA's.  I am using them under some components and the 4"X4" cork-laminated ones under my heavy amps.  I can't honest attest to greater SQ, but the cost is a trifling so it is a sensible place to start on the quest for component isolation.

I put the GAIA Orea's under my Spatial Audio speakers and they perform exactly as advertised.  Frankly, they outperformed many component upgrades I have done in the past.  
@whitestix I used the cork ones for a long time. However, I have found that the EVA pads work a bit better than the cork. Either way, you’ll likely achieve the results you want at a fraction of the price of the "audiophile" sanctioned isolation footers.
Oh, a further thought.  I initially used these pads nude and they left permanent blemishes on my audio rack so I clad them with self-adhering felt, which is also inexpensive and allows one to move the components more easily.