How to upgrade "power cord" on turntable with wall wart?

chaster-

I just don’t get it. Maybe i’m stupid? 

Wouldn't rule it out. Which if you think about it is the crux of the problem. You have ruled it out. Why? Because you can't explain it. 

That is one very stupid reason. You may not be a stupid person. We give the benefit of the doubt. But you have picked one very stupid reason, which does not tilt the odds in your favor.

There's a serious issue here you will do well to try and understand. There is a difference between the existence of a thing and the ability to explain the existence of a thing - and the one does not rule out the other. 

Got it? No? That's a shame. Odds tilting yet again. We will try another approach. 

The Earth is round. Possibly (benefit of the doubt again) you agree. But why? Looks pretty flat to me. 

Never mind. Here's the question: The Earth being round, does it have anything to do with anyone's ability to explain why its round? 

A whole bunch of people have made the comparisons and consistently reported that power cables do indeed sound different. You claim the right to say they are nuts. Why? Please explain.

lewm, I’ll admit that if you redefine outside the signal path to mean in the signal path then yes, you are right. Word games aside the point is all these things really do matter. And not subtle, but a lot.

OP- full disclosure. When talking about platter, plinth, motor, bearing, motor housing, etc. and saying "all these things matter" there is the possibility of misunderstanding. "All these things matter" not because someone said somewhere once upon a time. "All these things matter" because they have each and every one been tried, one at a time, and been shown to matter. Its how the Miller Carbon Turntable was built.
DYODD. https://systems.audiogon.com/systems/8367

It makes a difference. When I bought my Technics SL1200G I started with the supplied power cable. I had Rob Fritz from Audio Art build me a cable for the turntable. Once I inserted it into the system, there was an immediate and noticeable increase in PRAT. Going back to the stock cord, the PRAT diminished noticeably.

Please notice OP there is a pattern. Those who have actually tried and done all say it matters because they know from experience it matters. Those who have not done make grand pronouncements devoid of any actual knowledge, let alone experience. Its rote repetition. Repetition without comprehension. The proper response to them is, "Polly wanna cracker?" As opposed to stereo5 and me to whom its, "Well now, good to know, I will have to look into that. Thanks!"

My very first mod was to hard-wire a power cord to the motor of a Basis turntable. The first step in proof of concept, to determine if such things even matter, and if so then how much. The improvement was immediately noticeable.

Exercise caution here, mikepaul, there are way more people with opinions than experience, and even more with way more opinions than listening skills. Logic and reasoning, won’t even go there.

Well maybe for a second. Long enough to point out if things outside the signal path can’t matter then why does the turntable matter at all? Platter, bearing, tone arm, motor- whole thing is outside the signal path. Yet someone with no experience just said emphatically it can’t make any difference.

Inside the wall wart you will find the simplest of simple power supplies. A transformer, couple of diodes, maybe a cap. Probably on a flimsy little circuit board. Not much.

Each one of those cheap little parts contributes to performance. Its not just the wire. Its all of it.

My suggestion is first go check out my system and read the description and comments, so you will know I know what I’m talking about. https://systems.audiogon.com/systems/8367 Notice the mods done to the Active Shielding MPCs. These are almost exactly the same sort of wall wart. All the same principles apply.

Then once you have a handle on it open yours up and have a look inside. Then either DIY or maybe take some pics and message Michael Spallone. Or me. Whatever you do, understand that yes indeed this will make a difference.