Do speaker cables need a burn in period?

The opinion of a vast number of listeners , pro or con, doesn't rise to the level of circumstantial evidence.  It seems to be on audio forums and popular TV shows  but not in court. Opinions are not admisible as circumstantial evidence in court unless they are given by credtialed experts. This notion

"the vast numbers of listeners that can tell a difference and the cable manufacturers that spend untold thousands of careful listening hours"

is circumstantial evidence in  court  is wrong,  it's opinion and would not be admissible. 

I’m pretty sure opinion is admissible in court. Some opinion is more “expert” than others, that’s all. That’s why, in the case of judges or lawyers’ opinions, they’re called legal opinions. Anyway, that’s my opinion. 😳

The question was
"In a court of law would this prove burn in is not a fallacy but true?"
The answer is no it's not even circumstantial evidence. 

No, My opinion on whether wire burns in would not be admissible, a scientist opinion  who has tested and studied the phenomena and provide supporting evidence for his opinion  would be. That would be admissible circumstantial evidence. 

Well, little dudes, it depends on whether you are in federal or state court, and if state court, whether the forum applies Frye or Daubert. I opine this notion would not be admissible under either test, and a motion in limine granted. 

Nothing more disgusting than the smell of Kat 💩 in the morning.