That is correct there are no IEEE standards it is covered by UL which is now following IEC practice. The main issues are safety! The FTC relaxed the rules on power amplifiers and if you find any concerning audio equipment internal power supplies let me know.
None of the above determines the inner PSU's immunity against RFI carried on the mains supply.
I will. However, right now I'm in the process of installing isolation transformers to various pieces of gear. They may change the picture.
If there are no standards and no measurements, how do you know a different power cord works? How does it work, shunt capacitance? Series inductance? A few pf added to all those hundreds of ufs in all of the rest of the wire? Say are you in the audiophile power cord business?
Simon is referring to the transformer hot side of the mains may be outside the windings or the inner part of the windings next to the laminations, there is no standard for that. He has discussed that earlier in this thread.
Wrinkle.
Being a big skeptic when it comes to AC cord "cable magic" and their influence on sound after rectification I have to agree that I too have heard differences.
Whether this is due to quality of materials, geometry, shielding, connectors or listening room humidity I don't know. I suppose there are as many theories as their are skeptics.
I wouldn't call them facts, maybe more like eyewitness testimony.
Some do work as quite efficient low pass filter (at 2 - 3 MHz) /like VDH Mainsstream ** hybrid/. I have measured these cables.
P.S. this stupid engine has erased two characters ....
By listening to the sound of the stereo set.
I don't know how it works. All I know is that it works.
I'm in no business, I'm fully retired.
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