Linear Power supplies for DACs...?

Here’s some recent test data for linear power supplies.  Looks like no audible difference.  I was considering buying a Small Green Computer, but when I talked to the company they tried to sell me power supply magic that cost more than the server.  When I questioned the need for the power supply equipment, they reported Mac mini ports are noisy.  There is also little negative date about noisy usb and many professionals are using 2018 Mac mini’s for audio mixing.  I’m going to save my money and stick with my Mac Mini.

https://www.audiosciencereview.com/forum/index.php?threads/do-you-need-linear-power-supply-for-dacs....

+1 @steakster 

Every LPS I've had experience with has improved upon the supplied stock SMPS. 

As I've moved up the LPS ladder: improved outcomes.

Moving from stock DC cables to custom DC cables: improved outcomes.

Isolating the LPS: improved outcomes.

Changing power cables to the LPS: changes in results and when paired with the right power cable > improved outcomes.

Feeding the LPS via a custom power supply / power conditioner: improved outcomes.

I'm afflicted with a preponderance of misfortune in improved outcomes. I should read more and listen less.

 I also added a VPI brick on top of the LPS transformer. Seems to help smooth things out. Strange.

@mkgus,  what does VPI claim the benefits of the brick are when added to a power supply?

I don’t know what VPI claims. I always go back to this quote from @dgarretson in another thread:

I read in one of my father's old MSEE textbooks from the golden age of hifi in the 50's, that a block of iron or other magnetic material in proximity to a transformer will improve coupling action between the primary & secondary windings.