The amplifiers only use (2) .1uf signal path capacitors per monoblock. They also (3).1uf capacitors in the power section, they are not that big.. they fit in the chassis pretty easily.
I am using Tinned Copper cast for the signal, and Duelund JDM Copper cast for the power sections.
Also they use 2 main power filter capacitors each, both are Mundorf (Self Healing) Supremes.
I Got to the Tinned Copper after a lot of experimentation, and they are worth the price, and are as good as advertised. Tonality of instruments is very interesting. They sound very live.
I have made cables out of Silver and SilverGold foils, both USB and XLR... and in my system copper was the best. SilverGold USB has a very nice timbre, but the audio image is flatter in comparison, and the treble can become annoying in extended listening sessions.
SilverGold Foil XLR somehow has the deepest stage, but bass is a bit bleached out, it might be a good match in a different setup with sub woofers installed probably. The tonality is cooler compared to pure copper, but just doesn’t have the body. Very easy to spot on the Sax. (Copper has that sex appeal oozing out of it sound here) Girls fainting kind of deal :)
Pure Silver is not a good match for my system, I have Mundorf Silver in Oil capacitors on my tweeters, and have Silver alloy fuses everywhere, so any other addition of pure silver in the chain goes south pretty quickly.