Alternatives to Stillpoints

Hey Andy,
Where did you get  Himalayan salt block platforms large enough for your mono blocks? 

Amazon. I think this is it:

https://www.amazon.com/HIMALAID-Himalayan-Serving-Naturally-Provides/dp/B07L3BLLHH/ref=sr_1_10?ie=UT...

It's 12 x x 8 x 2 so it's footprint is a bit smaller than the amps.

Thanks Andy

@thyname, Ingress and Symposium roller and cup footers work well to damp seismic vibrations in rotational and horizontal planes. To get the best results you need to combine them with an air spring under a supportive plate made from a material with good damping properties.

Another point, @thyname. The Ingress should be set up with the ball directly touching the underside of the component and arranged in an equilateral triangle on plan.