It is not about an intellect. It is simply about following the correct procedures for a valid test. That has been known for a century or more.
It of course helps if one has a rudimentary knowledge of electricity, and that can be obtained in a college physics course. (or it could have been obtained if some of you placebophiles had taken science courses instead of those seminars on the minor lake poets and their sexual habits.)
Avoid magical thinking, save yourself some money and do things that actually do improve SQ.
If you have some sort of fetish on just power cords, you can (maybe) improve SQ by making up a cord for the DC power supply to your outboard DAC which has low inductance. The cord from the wall wart to the DAC itself. And I said "maybe" -- no guarantee.
It of course helps if one has a rudimentary knowledge of electricity, and that can be obtained in a college physics course. (or it could have been obtained if some of you placebophiles had taken science courses instead of those seminars on the minor lake poets and their sexual habits.)
Avoid magical thinking, save yourself some money and do things that actually do improve SQ.
If you have some sort of fetish on just power cords, you can (maybe) improve SQ by making up a cord for the DC power supply to your outboard DAC which has low inductance. The cord from the wall wart to the DAC itself. And I said "maybe" -- no guarantee.

