The humor here is unbelievably stupid. The people making fun of these thing are closed minded DOLTS.
I have an old high end system. (Mirage, ARC) I am lazy so I don't bother with any tweaks at all. It's because I am lazy, not because they don't work.
I have heard improvements that the Shakti stones make on a friends system. Definite, significant improvements. One or two persons have noted that they obtained improvements by putting the stones around electrical service boxes, etc. That makes sense! Look at the patent on the Shakti stones. Look it up on Google. Study the drawings closely. Read the text. Then THINK! What effect would that assembly (the actual contents of a Shakti stone) have when placed near an intense E and M field? Simply put, the stones' contents absorb some of the E and M energy thus reducing the amount that freely radiates through an area.
Theoretically the stones would be most effective containing E and M fields around areas where the E and M fields are the most intense. And protecting low level signals from spurious E and M fields.
If you would take the trouble to read the patent you would see that shakti stones are on the level. They are legit. All the people that have made dismissive comments here belong in the "Flat Earth Society." So dumb.