Do power supply units/cables make a difference in sound quality?

pwerahera I have the same view as you express in your post.  I wanted to see if anyone on this forum could give me convincing argument to change my mind.  The cost of these power control units and cables is far to high for the benefit the purport to deliver.  Good quality surge protectors and a stable source of AC is all I need on that end.

To a degree depends how revealing your system is.

@baumwoll Vast majority have never taken classes in electrical engineering that include Electrical Circuit Theory, Electrical Measurements, or Wiring Diagrams classes. Few years ago, one of the biomedical engineering faculty members told me, there is no need to teach sophomores Thevenin's and Norton's theorems because they are never going to need it. I can see in near future use of geometry, trigonometry, algebra getting the same treatment.  It is all now in the computer. You give the input parameters and computer gives you "what it thinks you want." But they lack the knowledge how to get there. So there you have it. For an old hack like me who spent hours and hours learning and then teaching these subjects face an uphill task convincing the masses what is true and what is not.

Glad you found some of us still around. One of my teachers/mentors passed away few years ago, Dr. Aram Budak who wrote several text books in EE. He would have gotten a good chuckle if he saw some of these posts describing audible differences in cables, fuses, etc. He retired to Grand Tetons, WY of all places. Until his very last breath, he could get a great view of the Tetons from his living room. He loved music and his favorite was Richard Strauss. His final request to the family was to play Death and Transfiguration at his funeral.

One of the funniest posts I've read recently on A'gon was from someone extolling the virtues of his new power cord that cost more than the his top of the line (read: very expensive) integrated amplifier.

@jasonbourne52

Aggree 100%, how many times does this total BS and nonsense have to come up. Engineering and science aside, A/B placebo affect sucking people in, stupidity denial spending more money on wires than equipment. Makes me think of a comic sketch of a group of challenged Christmas carollers belting out do you hear what I hear….Who care’s ? Most don’t believe in magic beans, a flat earth, or life after death again….Who care’s ? If you can’t prove it but hear it..enjoy it. Ya have to ya paid for it, don’t want that used market beating.

Cheers