I didn't buy Shakti Stones, really !! However, I did go to our local marine salvage outfitter and found a couple of brass driveshafts - big and really big. Got to thinking and had them cut some slices for me. Shined them up, put some felt on either end so they wouldn't scratch anything and put them on different components.



Here are some small ones - I can confidently report that no matter which component I put them on, I could detect no audible difference. However, I think they look very cool

Here are the big boys before I put the felt on:



Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.