Well we will see next week. Do you own an audio analyzer?
Of course, but Its irrelevant.
Passive components downstream from the final output of an audio system cannot contribute noise or distortion, unless the use of timing constants to create cutoff frequencies is somehow considered distortion.
You have a 'proof' issue in that no image you can produce will be considered 'proof'. For that, you need to have an uninvolved party do the actual testing- someone who does not have a conflict of interest.
This is why I gave you that tip earlier- to continue down this path you risk eroding your credibility even further.
Here's another tip: When confronting something you disagree with on a forum site like this one, generally speaking you'll do much better if you apply this simple rule:
Attack the post, not the poster. (FWIW this is actually in the rules you agreed to when you signed up)
It does not matter if someone is personally attacking you. If you respond in kind, you get caught by the internet tar baby. No-one on the outside looking in will be able to tell who is right and they also will not care. If you want to erode good will and credibility, to be known as a troll, that is a very quick way to do it.