New Synergistic Research Record Mat

@lewm- RFI/EMI is all around us, all the time. https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum1.html I’ve never tried crystals for anything in audio, since making a crystal radio as a kid, but- I wouldn’t scoff at the possibilities. ie: https://www.sciencedaily.com/releases/2016/01/160114113524.htm#:~:text=Summary%3A,an%20anisotropic%2... That article refers to a narrow band of electromagnetic radiation (infrared), but there are a multitude of possibilities, given the spectrum of EM frequencies and wide variety of crystals.

I have the HRS record weight and saw the new SR weight at kind of a silly price ($895) but read the reviews for a while as well as emailed a few guys who upgraded from the HRS to the SR and felt the improvement in sound quality would be worth the investment.  My wonderful wife ordered it for me and its under the tree - along with the mat which was free in a current promotional.  I have a JR Transrotor Rodino table and currently use no mat.  I will let everyone know what I think of he mat when I have it for a little bit.  Merry Christmas!

If it's "all around us", then putting a tiny crystal on top of a cartridge is like pissing in the wind, if you will pardon my colorful language.  The question is, as I stated already, can a tiny crystal reverse the piezo-electric effect, which as you probably know is the property of a crystal when placed under pressure to emit an electrical field akin to RFI.  I have done a literature search, and there is not much evidence to support the notion that a crystal can also absorb RFI and turn it into heat, or whatever SR would have us believe it does with the RFI, but I am not in a position to say categorically that such a transduction of energy is not possible.  Despite my theoretical and I hope scientific questions about the PHT, I don't deny that some folks like them, and I am not about to say that such persons are delusional. No one in my personal experience who has tried them was converted to PHT-ism.

Absorption of RFI/EMI has nothing to do with piezo-electrics.    Were one to actually read the references I posted; the posed questions would be addressed.      Of course; comprehension is key!

@cerrot-     Looking forward to your review/experience, one way or the other.