For amps, I have used all iterations and generations of PS Audio cables. Currently running AC-12 and love it. (I'm using all Shunyata for my front end).
I don't know much about electrical engineering, but keeping it simple with high quality copper of a decent gage has served me well on amps.
I don't know much about electrical engineering, but keeping it simple with high quality copper of a decent gage has served me well on amps.