@ps-
KUDOS, for experimenting with your system's sound/trusting your ears & senses.
Supra follows some of the same basic science/construction as I've mentioned, if you've read their explanation, as to why their PCs sound better* than stock/common wire.
cables that, from my perspective, are priced absurdly high, make no sense.
I agree.
However: those more comfortably situated than I, with much higher end systems and larger/better listening environs, can afford and demand the very best the likes of Kimber, Analysis Plus and Synergistic have to offer.
I would.
*https://www.madisoundspeakerstore.com/wire/cble/supra-lo-rad-power-cable-cs-us/