What about Kemp Electronics Tachyon box of BS. Tachyons don't even exist, and certainly no one is creating them for a hi-fi tweak. If they just said it was a magical box I wouldn't be getting on their case, but to throw out some absurd scientific BS just to get gullible hobbyists to give them money is disgraceful.
What’s your vote for the most ridiculous, overpriced, and useless tweak?
My vote: Furutech Outlet Cover 105 NCF $220, with “special crystalline material that has two “active” properties.” https://www.thecableco.com/outlet-cover-105-ncf.html