Two questions to make you mad.

@donavabdear 

Any piece of equipment with a well designed power supply only requires a power cable that can handle the current load. Increasing the gauge beyond that makes no difference. Dressing up the cable in a sock and adding good looking terminations and psychologically the system will sound better. Vision and hearing are hopelessly interconnected.  

Having said that I stumbled into an exception. A friend related that he heard a cable make Sound Labs speakers sound better. He brought a pair to my house and in deed the cables actually worked. I ABed myself to death and sure enough fine details were more audible. On Waltz for Debby with the stock power cords the crowd noise in the background was audible but the speech was indeterminate. With the new cords I could clearly understand most of the background talk. The cord powers the very low tech high voltage power supply to the diaphragm. The power cord has some sort of filter in it. My guess is that noise in the AC is somehow interacting with the diaphragm to lower the signal to noise ratio. The speakers are powered indefinitely and at rest they are dead silent. The filter must be removing this noise that obviously is interacting with the audio signal. 

This is an exception as the AC is being converted, amplified, to 5000 volts DC by a very basic power supply which is not regulated in any way. My guess is that the DC is being modulated by the "noise" and you would only notice this when a signal is applied to the speaker. 

@mijostyn 

One of the reasons I'm not a big cable guy is because good equipment should have a good power supply, and audio equipment uses DC at low voltages so I've never understood pre transformer and pre voltage regulation in the last 6 feet before the AC connection. I've got about 32k$ in power components alone not counting AC cables so I believe in clean power. I started in live sound and there are often power problems even in bigger venues, to fix power problems you need to fix or isolate the main transformers which is always expensive. I worked at a church that put in a big sound system and really did it right they spent money on isolated power transformers for the sound system, it was an analog system with about 200 channels for the orchestra. It was easy to mix but there was always more to do on every mix meaning it was so quiet that you could obsess about EQing the 2nd viola or French horn section and not ever get the mix you wanted. It's just like when we went to HD video in a the film industry when we stoped using film all of a sudden the makeup people were really extra worried about tiny little makeup details on the actors that were never seen on film cameras in the past. A blacker background is not always a good idea, makeup is a filter used in Hollywood to make homely people into beautiful movie stars. 

#1  No logical comparison or correlation between the ASML system operation and home audio.  There will be a long list of installation requirements from ASML that must be met to achieve proper performance, cable being a minor factor. Implying that ASML does not care about cable or AC quality to create a completely bogus  controversy is silly. 

#2 Apples to oranges premise that makes no sense. 

@texbychoice 

Nearly all electronics (not electrical) changes AC to DC. After the power is changed to DC the AC part is done, yes the transformer, rectifier and down powering circuits are important but any audiophile grade AC to DC conversion is easily done the the filtering is applied to the DC circuit. 
 

the ASML doesn’t work on raw AC it works on DC and those engineers don’t feel that it’s important to use very expensive boutique AC cables with things like insulation bias and other such nonsense. If these AC cables did make the usable signal more accurate don’t you think they would use them? Im using this example because this is the most expensive and accurate machine in the world that is manufactured. If there were invisible advantages to audiophile AC power cables don’t you think they would be tested and used when the need for accurate is so important. Intel couldn’t make 5nm chips a few years ago and it nearly bankrupt the company, money is not in the equation of chip making only accuracy and the engineering to make it happen is and they don’t use special AC cables. Hope my argument is clear.

One could argue that rain is just excessive humidity, therefore an umbrella is not necessary. 
 

Deniers can rationalize all they want that cables do not or should not matter but they do.