A pair of McCormack Audio DNA-1 amplifiers converted to monoblocks and upgraded by SMc Audio (i.e., Steve McCormack) to the highest upgrade level offered by Steve in the spring of 2020. Highlights include; New faceplates, powder-coated chassis and heatsinks, large Plitron low-noise transformers, circuit and grounding upgrades, Lundahl input transformers, new power capacitors, special capacitors and resistors in strategic locations, special wire, Stillpoint mini footers, Cardas binding posts, and SMc Audio's new Gravity Base on each of the amps.
As the picture shows, the amps sit on Silent Running Audio (SRA) Ohio-Class XL+2 platforms configured using SRA's Component Specific Design™, which means the folks at SRA configured the platforms specifically for my amplifiers, considering their weight, dimensional footer configuration, and location of the heavy transformers. The SRA platforms are supported on their own spikes and decoupling discs, supported on the lower shelf of a quarter-sawn oak table that is "decoupled" from the concrete floor in my listening room using Herbie's Big Fat Dots. The lower shelf is also reinforced with vertical oak members at several strategic locations, resulting in a very solid base for the SRA platforms.
For awhile, I was using 5 individual springs to support each amp over the SRA bases but have removed those to reduce height in the new stand. The SRA people will tell you their platforms do not require the use of any additional audiophile footers.