One of my wife's grandfathers was a "Flat Earther." When shown the ocean for the first time in his old age, he remarked, "Hmm, not as big as I though it'd be." Which, when you think about it, was him seeing his view of the ocean disappear over the horizon. I know that when I plugged in my first non-stock power cards, the impact on SQ was a definite, non-subtle improvement in SQ, especially clarity. I couldn't explain it, but I damn sure know what I heard. Confirmation bias or some such? I don't think so.
And that is the million dollar question. Well, much. much, more than a million has been spent of power cords over the last 3 decades.
Much, much more than a million has been made by youtubers promoting the flat earth theory and their subscribers gladly eating it up. Psychologically it is a great feeling of belonging to an exclusive group that has the forbidden knowledge that we are being lied to by all the scientists in the world and NASA is at the forefront of that lie... The Earth is as flat as a pancake and some claim there is a dome. No such thing as gravity. It doesn't exist. There is no way we are hurtling through space somewhere on the outskirts of the Milky Way Galaxy at over 1,300,000,000 mph.. That can't be because we don't feel it!
One can draw their own parallels here.
I believe in the confirmation bias much more than I believe I have heard a difference in power cords over my own 3 decades of participating. Fancy ICs? Sure, I have played around, Purist, Nordost, Kimber, Cardas, Wireworld, Transparent, a lot of Transparent! I still use Transparent speaker cables and ICs but they have a network so they are essentially a grunge filter/tone control and I like it!
I also have a Shunyata power cord, it is well made and is well shielded. As such, I find it useful behind my rack where there are a whole bunch of ICs nearby. It doesn't make my system sound different because it dresses up the electrons for the musical parade but because it doesn't seem to spew electromagnetic radiation as much and polluting the nearby components and ICs.
I cannot after 30 years of this hobby in good conscience claim that I definitively heard a difference in cables or power cords but I can without a doubt say that I have also heard that which I "saw" with my eyes and was pre-biased to, with confirmation from other enthusiasts.
Notice how all the cables that are all the rage are simply always blowing the others away. They are always "better". We have invented a lot of adjectives for our descriptive writing but never stop to think what better actually implies. How does one cable make everything "better"? What is "better"? There is no standard or a gauge to go by.
In the end, I have no objection to any of the toys and tweaks. It is what I would call the "jewelry" of the audio world. It is no different than any other hobby where one takes a perfectly well designed and manufactured wheel and "upgrade" to a wheel made by an uncertain quality outfit because it "looks" better. Power conditioners/power cords are no different. If one thinks or even "knows" they hear a difference, so be it. It's your money, spend it as you see fit.
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