I believe the most important part of an audio system is the source. As they say, you can’t fix down stream what’s broken upstream. My Aragon D2A MKII is great, but I it is over 15 years old, and that’s why I went to compare it to the Bryston BDA-1.
I am always reading about various isolation products. One can find cones made of metal or carbon. Their are hard metal/rubber/resin balls in cups. You can use solid heavy weight things like granite and marble, or softer materials like Sorbothane and other rubber like materials. I did hear of one isolation platform that uses ‘air’… well sort of uses air.