Power Cords - Pixie Dust?


As an audiophile I am always prepared to believe that almost anything can make a difference in the sound. But this one makes me wonder. I have a TNT MKV with JMW 12.5 arm. The stand alone motor turns, via a belt, a flywheel that turns, via another belt, the platter.

I have seen an add claiming that replacing the power cord between the SDS speed controller and the stand alone motor can improved the sound of the table, "increasing upper range resolution and sweetness" or some such thing.

I suppose I can see how a new power cord might be argued to improve speed stability, but for the life of me how can a special power cord improve "resolution and sweetness", when the only function of the motor is to spin a belt, that turns a flywheel that spins another belt that turns the platter?? Does this claim make any sense?
jackcob
thanks Jack that's the one!
now who has actually tried this? HDM & Bob Crump apparently have. Others opinions re: "placebo effect" are obviously just that & are worth exactly what you paid for it. If you have tried this to no positive effect, then that's useful information. If you have tried this to positive effect, then that's also useful information. If you haven't tried it then you have no business publishing pure conjecture because you don't know one way or the other. I'm gonna try it when I get an SDS & will keep an open mind. Whether it does or doesn't do anything for me, that's just one situation & you won't necessarily experience the same result. All systems are different; synergy is the differentiating factor. There are NO absolutes in this hobby.
Bob: Just to clarify things, I haven't actually replaced the cord on my table, as it's a bit complicated. I have an older Michell Gyrodek; the power cord connects with a very weird 3 pin connector I've never seen anywhere else essentially right at the motor and then runs to a "wall wart" kind of power supply, with the cord running out from that power supply to what used to be a cheap rubber/plastic molded plug. In my early days of experimenting with (and building some DIY) power cords, I simply cut off the molded plug and replaced it with a Hubbell 5266CCN male plug. This in itself made a pretty substantial improvement to sound quality, so I am not really too skeptical that a good cord might improve things further. If I could get my hands on a bit more 47 Labs OTA cable and guarantee myself that I could terminate at that 3 pin connector without destroying it or screwing things up, I'd probably go that route as I've used that same setup on my CD/DVD player with very good results.
Re: The ad... Curious; VPI's WebSite doesn't, AFAIK, list the product. Acoustic Sounds subtley implies it's a VPI product. E-mailed both parties for further info. Seems to me, IMHO, that it would be in VPI's best interest to supply the best pc required for the task with it's SAMA. The original SAMA came with a 3-conductor #18AWG hardwired SJT cord; (junior hard service, thermoplastic insulation.)

Considering the mass of VPI platters, I remain highly skeptical that a PC change over a stock SAMA cord would be earth shattering. I *have changed the plug on the stock original SAMA...yawn. Audio memory tells me that actually the SAMA change out was, well, subtle at best. For every system there's an opinion. For every change, there's usually a difference. Not all differences are improvements. Funny how the change/difference seems to vanish after awhile... Upgrades are the lifeblood of the software industry, and the audio industry is no different. Put it out there and someone will buy it. It's been that way since new and improved laundry detergent was invented.

I'm not saying this is impossible, but, IMHO, it has some heavy odds stacked against it. No way will I drop $300 for an experiment. That money would go a long way in the used record shop; but then, some are more interested in hardware and changes than actually collecting music to listen to.

Unaware that Forum rules only allowed posting the results of subjective field tests, which of course, result in individual opinions and observations, and that ideas and thoughts were disallowed; even with liberal sprinkling of IMO/IMHO's, which I neglected... And *that won't happen again.
Take this for what it worth (probably very little). Krell recommends not replacing their stock power cords. They sort of imply problems may result. Every time I have observed changing the power cord on a piece of Krell gear there was a dramatic improvement, not just a change. The review is for another thread, but just because VPI doesn't recommend or stock the better PC doesn't mean it will not help.
P.S. Love that Pixie Dust.