Biggest audio hoaxes


Often when people discuss audio, they talk about "snake oil" or "hoaxes."

It's pretty typical to use the term hoax as a tactic against another who disagrees with one, or holds an unusual opinion or vouches for something which has not been verified. That's not what I mean by a "hoax." 

By "hoax" I mean an audio product or claim which has been pretty definitively disproved. Maybe not to everyone's satisfaction, but to common consensus.

So -- with that definition of hoax in mind, what are some of the biggest audiophile hoaxes you've heard of?
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I am with stargazer3.  With the exception of speakers, and even then it is exaggerated, it is a wonderful hoax played on willing audiophiles, the whole concept of 100's of hours of burn in, especially on cables. All the suppliers are in on it and there is 0 benefit to them to admit it is a hoax. They will even charge you a premium to do it for you.  
sugabooger
... it is a wonderful hoax played on willing audiophiles, the whole concept of 100’s of hours of burn in, especially on cables. All the suppliers are in on it and there is 0 benefit to them to admit it is a hoax ...
Wow - a "wonderful hoax"!
Why don’t you file a perfect class action lawsuit and put this "wonderful hoax" to rest for once and for all?
Beware the audio guru.
Uh oh, did I touch on a sacred hoax?   Why are you not suggesting class action lawsuits for the other hoaxes mentioned. Are you in on it? Oh my my my. 
sugabooger" Why are you not suggesting class action lawsuits for the other hoaxes mentioned."

You might want to check your facts, information, and data because the evidence is clear, abundant, and overwhelming that user "cleeds" has repeatedly, frequently, and consistently called out users alleging hoax, fraud, and deception and asked why they were not pursuing legal remedies that are abundantly available in the US to extract refund, compensation, and reimbursement for losses, damages, and injury caused, created, and/or the consequence of what some hear call audio "hoaxes."

Because you have now joined the community alleging fraud it does seem fair to inquire of you directly as to why you would not pursue the proper, proscribed, and appropriate legal remedies.
I agree, burn in the pretty crazy hoax. I've never noticed any component acquire  drastic change over certain prescribed time periods.
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