Nice read. I have a question and it maybe a little silly but are these numbers still correct meaning the article was written a long time ago and now we have digital amps so do the newer style amps behave the same way the amps used in this article? I am assuming they are like class ab or something.
Are you talking about class D amps? They are actually not digital, but analog pulse width/pulse density modulation.
Anyway, they behave the same with regards to cables.