New Synergistic Research Record Mat

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.      

I am guilty of not reading your citation.  I did goof in a way by saying that the piezoelectric effect in a crystal results in release of RFI; it is the release of electric charge by a crystal under pressure, or applied mechanical stress. I apologize for that error.  But it's only a small boo-boo because the electrical energy released by a piezo material can be of very high frequency, e.g., up to 1 MHz. That's RFI territory.  I wrote not one word about EMI, by the way.

I like that paper from 2016.  That would support the utility of a crystal in this application.