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Which doesn't have anything to do with power cords at all. What it means is that a higher sample rate is more useful than originally thought. To the power supply, there will be no difference between a chunky monoprice cable and a probably-costs-more-than-my-car Nordost cable. If the device the monoprice cable is connected to is poorly shielded, then spending a few more buck for a shielded power cable may help.
The point is, there is no suggested mechanism of action that will allow a simple power cable to change the waveform being sent through it, to any significant degree. There will a tiny amount of heat lost to resistance. If the cable is very poorly made or very long then inductance or capacitance could affect the mains waveform. Or maybe its unshielded and you just forgot to turn of your
HERF gun. Even so, it will have much less effect then the tens of yards of romex in your walls, or the miles of powerlines between you and the local powerplant. The people who design power supplies know the mains waveforms are ugly. They make power supplies to deal with all but the very worst. A proper power conditioner can make a difference, but an extra six feet of conductor, no matter how pure, will not.
If Nordost substantiate their claims in front of some independent scientists, they'll be in for a
financial windfall, since they will have either demonstrated the paranormal, or a new law of physics.
You don't seem to understand what I was trying to say, so allow me to rephrase:
If you won't to test the effect of a change in power cable, it is stupid to try and find a difference in a simple sine wave. What we listen to is not simple sine waves but a complex musical signal.
So far, there is no easy way to measure a musical signal properly. If you look at simple measurements like RMAA, a poor sounding soundcard such as the emu 0404 usb might measure better in the frequency domain than the $27,000 Naim CD555 Cd player. The reason is pretty simple it doesn't cost more than $100 to make a DAC with a good frequency domain performance but it take a lot more to make one with a good time domain frequency. In fact, Kunchur wouldn't have needed to use higher sample rate to generate a proper signal from a CD player. A CD player such as the Naim CD that use R2R dac chips with good digital filters can in fact generate decent sine waves at high frequencies (contrary to sigma delta DACs - see
here for example).
Saying that "
there will be no difference between a chunky monoprice cable and a probably-costs-more-than-my-car Nordost cable" is a stupid comment if:
a/ you didn't measure it
b/ you didn't even try it
For lack of understanding and for close mindedness people believed for a long time that the earth was flat. More recently all CDs were supposed to sound the same (Perfect sound forever) until people started complaining and we discovered jitter.
A fraction of audiophiles have been saying for some time that they noticed a difference between power cords (and vibration control devices). Nordost is trying to come up with a way to prove there is a measured difference (the same way we have ways to measure jitter today).
Science is constantly evolving. Some assumptions that were considered being true a hundred years ago have been revised/updated today. If you want to believe there is 0 possibility that a power cord can affect the sound, good for you. Nobody is forcing to buy a Nordost power cord.
Personally, I have found differences between power cords, so I will keep using the ones that improve the sound in my system. If at some point, measurements prove that what I am hearing is true then I would have spent my money wisely. If there is no proof (ever) that power cords can affect the sound, I still don't care as it allowed me (for whatever reason) to enjoy my system even more. The way, I see things I am aware of the risks of being "fooled" but I consider that the outcome in both cases is a win situation for me.
Back to the topic of measuring the effect of power cords, if someone wants to do the measurement, better do them right.
- Let's suppose that I am wrong, then we would have used over speced equipment for the test but we still would have good results.
- Let's suppose that you are wrong, measuring a simple sine wave to incorrect results.
Even if you don't agree with what I subjectively hear, the proper test conditions I suggested remain right.
Anyway, I have said enough on the subject. If people wish to discuss further whether it is possible or not that power cords affect the sound (other than by subjective listening), it is probably better to move the discussion to the sound science forum.