If you are reading this, and you are new here, 95% of the time those that believe in "tweaks", which invariably are used somewhere in the electronics, don't have any depth of knowledge of how electronics actually work. Does having a deeper understanding of electronics and electricity magically change your ears? It may actually change your brain, as you will be less susceptible to suggestion.
w.r.t. "trying it", I have lots of audiophile friends who tell me about these crazy upgrades. Invariably, when I visit, they will demonstrate it, and I won't hear a difference. Then I sit them down and make the change without them knowing what I did ... and they don't either, though I have found loose contacts and corrosion that perhaps contributed to the change.
The so called "tweaks" rarely stand up to scrutiny. There is no valid explanation for what the tweak does, and even when the explanation is in the realm of possibility, you will never find enough details to validate the claim (except fuses in the speaker path).