AMPLIFIER BLOCKS

Hi Tattooedtrackman 
You have some solid suggestions to choose from, I will add another for your consideration.

https://audiophilevibrationcontrol.com

I found an old Stand Design rack, and replaced the shelving with these guys. What they produced exceeded my expectations in both look and functionality. They are reasonably priced. 

I find that Finite Elemente(Cerabase Classic) make the best footers.
They come up on Agon from time to time at 50% off list.

Good Luck

Terrastone platform and footers from Dan Sherbrook at Edensound. Great products at fair prices. Very effective. And, he’s a really good guy. I have no business connection; just a very happy customer.

You didn't say, but full depth, sanded-in-place, tongue-in-groove, hardwood floors are typically supported on wooden floor joists over a basement or crawl space.  Wood flooring over a wood joist support system is very different from flooring over a concrete slab-on-grade.  The wood joists will be more susceptible to vibrations than a floor supported over a slab-on-grade.  

If your system is supported over wood joists, then an amplifier stand or support platform could be more effective than which blocks, or footers, you have directly under your amp.  A platform may help spread the amplifier support over a larger area so that the support is derived directly from multiple joists while the four feet alone may be positioned on the flooring between joists.  I suspect decoupling using compliant footers or springs may be more beneficial than coupling with spikes, for situations over a joist-supported wood floor.   You may want to look into what has worked well for people with large speakers over joist-supported floors.

mitch2 Yes that is exactly what i have. Wow never thought of that. 

HRS