Tactile bass shaker lp/hp settings

And why would anyone want something that outrageous and cheap in their high end system?

The same reason people buy cables, goop for cables and fuses.

To see if it makes an improvement. 

Mount them on Nobsound springs.  Transformational!

I have actually used these back in 1998.  I had 6 of them bolted to the bottom of my couch.  It did create additional bass vibrations that you could feel, but after experiencing them, they really did not add that much to the movie experience.  Kind of a gimmic in my opinion, but go ahead and try them.  Probably set the crossover to 70-80hz or something.