Since I know full-well that some enjoy mockery rather than trying anything remotely being characterized as a tweak which I think is ridiculous, I will enter this fray. I once had ten Shakti Stones. Now I have none. I found that I could not predict the circumstances were they had a positive effect, a negative effect, or no effect. All three happened to me.
Some times they would steal all dynamics out of the sound, sometimes they would reduce the noise level in the music, and sometimes they did absolutely nothing. At one point I concluded that they could be nowhere near the signal. Often this proved impossible. I gave up.
I should say that I have had a similar experience with quartz disks, such as the Acoustic Revive QR-8s and RIQ-5010s. There no question that under some circumstances they are very effective, in others totally terrible, and in yet others have no effect.
So, yes they can work. Where you may get great differences is unknown. All that I can really say is that, like me, you may get frustrated with the trial and error.
Some times they would steal all dynamics out of the sound, sometimes they would reduce the noise level in the music, and sometimes they did absolutely nothing. At one point I concluded that they could be nowhere near the signal. Often this proved impossible. I gave up.
I should say that I have had a similar experience with quartz disks, such as the Acoustic Revive QR-8s and RIQ-5010s. There no question that under some circumstances they are very effective, in others totally terrible, and in yet others have no effect.
So, yes they can work. Where you may get great differences is unknown. All that I can really say is that, like me, you may get frustrated with the trial and error.