At 11.59 minutes I see a big difference in the images from his Anthem scope. Big. The author claims he sees no difference. Red flag for me. Plus he says he hears nothing between cords. Again, I have definitely heard differences. That does not mean the more expensive cord is better. It means there is a difference.
When I first stared in audio, I bought a pile of "Audiophile power cords". And my system had issues. A pro came to my house with a pile of inexpensive Chingcheng type cables. $29 each. One by one he changed out a cord. I heard every move and started to complain it was sounding different and I was not sure I liked it. He said it was going in the right direction, and I should hang on. He kept changing out my Audiophile cords. It's always the last cord, right. Anyhow, he changes out the last cord and it clicked. Both our jaws dropped and we stared at each other dumbfounded. It was so so so much better. As in "Better".
The whole point is, cords are very audible. No one is going to convince me they are all the same. They are not.
If you are addressing this to me, I never said they were all the same. I said those I tried, some of them quite expensive, didn’t sound better than the stock power cords my equipment came with. I kept the last set of three for two reasons, I needed nine foot lengths and they fit the bill, and because I requested custom nine foot lengths, they were not returnable.
The question of whether or not it is possible to make a world class system without tweaks and high cost cables … perhaps. Any of it might or might not cause your system to sound sound different, but better? You bought $29.oo chingcheng because they sounded the best and that is my point. Snake oil and sales patter is making me doubt everything I read about high end equipment.
Consider the following:
MIT ACC268 fully adjustable (for treble, bass) interconnects $80,000 pair two pairs =$160,000.00
Kimber Kable KS 6068 speaker cable $82,000 pair
Nordost Odin Supreme Reference Power Cable is more than £20,000 pair, three devices = £60,000.00
Nordost Odin Supreme din-RCAs phono cable $30,000
Just over $332,000.00 in wire to hook up your turntable to pre, pre to amp, and amp to speakers, to get the best, … if you believe the sales patter.