What’s your vote for the most ridiculous, overpriced, and useless tweak?

I’ve been designing and selling audiophile products based on piezoelectric crystals for a wide range of audio applications, including but not limited to power plugs, walls, windows, room acoustics, for more than 15 years. I also designed and have been selling a wall outlet that acts like a resonator for around ten years but who’s counting?  No big deal. Maybe for someone living in a cave.

I agree with Frank. But first coat the inside with fo.Q tape and then apply the Total Contact onto the fo.Q tape. I found that to be even better, and it’s easily removable if you move out of the house.

My main wall duplex outlet has SR graphene treated screws for the wiring, fo.Q/TC inner plate lining, fo.Q outer plate lining and AVM paint on the internal wiring and casing. Unused outlets are plugged with PPT Stop-It! duplex plugs. I think it was also blasted with the SR Tesla coil when I sent it to SR for treatment. I’m happy with the results.

@stringreen , good point. I never got on well with spikes - maybe it was my ancient floorboards to blame. So naturally I'm biased a little, and maybe that colours what I hear. I don't know, but they didn't work for me.

I also hate the thought of record clamps, heavy ones especially because of the additional weight just where you don't want it. 

You're right this hobby is largely about preferences or else it would be easy and we'd all have similar systems.

I think it was Coconut Audio that used to sell footers shaped like various animals.Each set of footers were claimed to enhance your system in special mysterious ways.Funny stuff:)That site offered many bizarre items.

Has to be Shun Mook record clamp.
Around $4,000 I think.