has anyone else tried Lloyd Walkers latest tweak

Mr L: Thinking back to my(at about the age of 10) first electronic project, a crystal radio; virtually the only components it contained were the crystal itself, which was described as, "the detector" & a tuning coil. I'm certain you are familiar with radio waves and their electro-magnetic energy, so- I'll skip that treatise. In a crystal radio; the detector changes the received RF energy(via antenna/tuner) and changes it into an audio signal. The detector is actually a rectifier & when radio was first invented; many found that various rocks, that were crystalline(ie: pyrite, galena, etc), could be used as detectors. Isn't is possible, that these mystery crystals are composed of a rectifying substance that is then sized and shaped to tune in to certain RF freqs, deleterious to our listening pleasure? In the radio app; the audio signal's energy is directed to, and expended by, earphones. I have no hypothesis as to what the crystal might do with what RFI/EMI energy it might capture. Not to start another debate and I have no idea whether they work or not, but- Shakti Stones are purported to function the same way.

IMO the only way the crystal as it is used on the cartridge could operate by absorbing or dissipating RFI/EMI is if it acted like a magnet for RFI/EMI, pulling in the offending electromagnetic fields like a black hole pulling in matter beyond the event horizon. If the crystal did not pull in RFI/EMI then wouldn't it be safe to assume the electromagnetic fields would still be there? It makes much more sense that the crystal absorbs or dissipates mechanical vibration, inasmuch as even low levels of vibration on the cartridge body could be audible considering the sensitivity of modern phono cartridges. Of course, we don't actually know what the Walker black diamond is made of. I trust it's not really a black diamond.

Just as a side note, the crystal in the Shakti Stone is part of an electrical circuit, albeit a passive one.

re: The Shakti- Yes; that it is passive, absorbs RFI/EMI(purportedly)) and is not grounded, was my point.