@prof Well, something about power cords not being cast as unimportant in your prior post to electrical engineers is WRONG! My 3 year neighbor who has an expensive high end system including YG Sonja 2.3s, Meridian Ultradac, Audio Research SP28, etc and good other cabling, computer based listing using CDs transferred to it thought the same as you as to power cords. He was an electrical engineer for 30+ years. He used Pangea power cords on his equipment. The sound was not good. Bass frequencies were a mess. The reproduction of the frequency range was very ragged with some frequencies standing out and some recessed. Hearing a bass played on his system was awful.
I lent him an Empress ($300) 7 year old GroverHuffman power cable for his amp. He was blown away. The bass started to sound coherent. He still had this spacey sound, undefined highs. He knows how good my lower cost system is. He purchased six GroverHuffman Pharoah power cables ($750 each) to replace all his Pangeas.
I now enjoy going over to his home and listening to music. He is up to 2 am like me listening. The system is truly high end now. He still has no explanation why electricity in power cables differ, only that different design and material cables work there too.
This is not an ad for a specific cable. It is a rebuttal to anyone who says electrical engineers don't see a difference in power cables.