Importance of power cable for Turntable?

A hearty +1 to @folkfreak 's statement, copied below:

Actually my experience is that a transparent system will bring out the best in any recording, no matter how flawed. I want to hear what the artists were doing, warts and all, I can listen through recording errors and would much rather it was given me straight than sugar coated. Certainly in my current setup I've yet to find a disc "unlistenable" and am enjoying lots of things I'd previously written off

@folkfreak, I was speaking specifically about the reproduction of the very highest frequencies, where a super tweeter usually operates, where bad recordings are their worst, and our ears most sensitive to any nastiness. At frequencies below that, I don't think any degree of transparency is excessive! I do require high frequency reproduction capable of doing justice to the "sizzle" cymbals (those fitted with rivets) in my music collection. One of my favorite drum sounds, a sizzle cymbal has been in my kit setup for many years.

Good point @lewm. It is not a symmetrical situation; if a difference between two competing components---in this instance power cords---is heard, the system is then ipso facto transparent enough to reveal that difference. On the other hand, if a difference in NOT heard, that does not necessarily prove a lack of transparency, for, as you imply, there may in actuality be no difference to be heard.

I would hazard a guess that system resolving power is one of many variables that could bottleneck the performance of a power cable or make differences in cords less noticeable.  I’d think it also depends on how noisy an environment is, how clean the AC input power is, and also how good the regulators are in the components that the cords are connected to.  In a hypothetical (and probably not realistic scenario), if you have a highly resolving system, clean power, no material EMI to speak of, and high quality regulation built into the gear, maybe you wouldn’t notice differences between cords.  Some very high end gear comes with power regulation in a separate chassis.  Is it possible that such components, if implemented right, at least partially negate the effects between a lower end and higher end cord?

I have a VPI Aries Scout and I hired a local dealer who also happens to be a real analog guru to make a house call to set it up properly.  He said the outboard power supply on my particular table was in no way in need of an expensive power cable.  Interconnects are the key and as for the expensive power cable? Better used elsewhere in the system.