Shakti Stones Do they actuall work guys.

I have 13 stones and 23 on-line pair. Yes, they do work. I use two at the subpanel where my dedicated lines emerge. This is a huge help. I experimented with 1-3 stones on my APL 3910, my Theta Citadel monoblocs, my Vandersteen 5a speaker on the top front tweeter(one on-line each), and my AudioexcellenceAz Power Wing(2 stones). I actually find that three stones on each works even better than one or two.
The on-lines work tremendously on all wire terminations. I have 1-2 at each termination. Some are presently on loan to my video system where they greatly improve the audio/video of my Tivo DirecTv HR 10 HD receiver.
I have yet to experience any negatives, but a local friend feels there is a small dryness along with the greatly reduced noise floor. He is currently using only on-lines in his system.
I hope this helps.

They work well for breaking windows in old abandoned buildings!

Nothing funny about it, Grant. Now, a few other words come to mind...

Anybody experiment with Shakti stone on his head while listening?Any difference?

Any rock can do the job. Maybe a better rock would be better, a common jar of ordinary beach pebbles could do it for you... Go to a rock store and buy a bunch of fancy but cheap polished stones..and a fancy bottle.. still WAYYYYYYY cheaper than the overpriced nonsense. (as if you are too stupid to fill a jar with rocks?, so they charge $ hundreds $ for the privilidge of doing it for you!)
I have used bricks with a thin layer of rubber on the bottom. Work great. and a whole lot cheaper that some magical overpriced gobbledygook. (and they sell magic bricks too... also $ hundreds $ for what is basically just a damn brick.. or a pile of small rocks!