I just don't get it either. How can changing just one power cord on a DAC make that much difference. As you know, this is not a subtle change in the sound character. Someone could get a PhD if they could really figure this out. I have all but given up on the intellectual side of audio and just enjoy the music that results from finding the right comonents.
You need really revealing speakers lol .
I have 3 power cords .
1 is 2,50 the other one is 4, 50 and i have a couple that cost 200 .
As a dutchman i tend to automatically gravitate towards the cheap one .
(Ps if the sound collapses while using a cheap power cord then there is something wrong with it in my view)