What isolation feet under your amp with great result?

Thank you everyone for sharing. I really appreciate. I will look into some of your recommendations especially ones leaning to improving inner details or resolutions. Meanwhile, I happen to find in my closet an extra set of 3 called “a floating balls design” that I bought years ago from Custom Isolation dot Net- great and nearly identical result that I’m getting from my CDP. I’m sharing the link here: http://customisolation.net/detail.asp?IDA=157Anywho, just like cables, diff isolation feet designs do make vary impact to audio system ... to my ears at the least, unfortunately. 

Just thought I'd chime in to let you know I got the Isoacoustic Oreas today (FedEx must have read this). I had an inkling they'd work better for my SACD player what with all the spinning going on so I tried them with integrated first, to see just how little it would improve things.

I was wrong.

The result wasn't earth shattering but the focus is much better. My Marantz/JBL combo always had a nice, full and easy sound. Now it's like it went on a diet. I thought it was more midrange centric but after lots of listening, it's across the board improvement with no area sacrificing for another. 

Inner detail or insight, if you will is everywhere to be heard. Vocals are much more intelligible and natural sounding. Highs have a bit more air and sparkle, but just a bit. I'd say more coherent would sum it up best. 

It got better when used under the SACD player. I'm going to experiment with the front two footers and see if just one sounds better tomorrow. I was told that having just one resonance point working under the CD transport might sound better than having two. This is starting to be fun again,

All the best,
Nonoise

As an update, the EVP's are working well under my Audio Note preamp. Music is more transparent and uncolored than with Herbies Tenderfeet.
Bass is now tight as well. An affordable way to decouple a component.

When using Herbies Tenderfeet, do not use them under the existing factory feet. Either remove the factory feet or place next to them (provided you have enough clearance). Make sure they are in contact with the bottom plate and I have found that 3 sound marginally better than 4.

@lowrider57, glad to hear the EVPs are working.  I certainly considered them and have not ruled them out for support under my speakers but the cost would be about $800.

In my searching around, I came across Owens Corning 703 and 705, which are rigid fiberglass boards that are commonly used for acoustical damping purposes.  The data sheets for the 703/705 materials (particularly compressive strength and associated deformation) seem quite similar to the technical information reported for the EVP material and the photos of the material look similar, except the EVPs have been painted black.  I am thinking about a DIY project using 705 pads under my speakers and including the metal plates and rubber, similar to those used for the EVPs.  I have not heard of anybody else trying this as a DIY project.  It will probably be a bit of work, but fun.  If successful, I could do my two subs too and I suspect the DIY cost would be quite a bit less than the $1,600 it would cost me to do my main speakers and two subs.