I begin with the central electrical panel of my house in the basement, I put some quartz the first time and that in some way clean the sound... Impress by that ridiculous tweak, I go on with different stones, and impress by the results,varying results depending of the kind of stones used,i carry on with the electrical panel, the results were astounding.... Finally I go upward cleaning all along the main electrical line of my house,all along the exterior wall of my house, using after many experiments complementary stones, but mainly, all along the approx. 17 feet of cable on the exterior wall of my house,i put cheap colored river bed peebles(for aquarium hobbyist) and the imaging,clarity on all frequencies improve so much,that this was astounding for the price paid, one bucks for the bag of ordinary peebles, but a little more pricier for the many complementary kind of stones I used .... At the end there is absolutely no comparison between my audio system nude right out of the box without cleaning, and the same audio system cleaned...
Now I know that any review except measurement is anecdotal reading at most...Not because this is only subjective experience like some say,but mainly because almost all people listen to an audio system without cleaning the electrical grid, without much precaution for vibrations treatment also then they never listen to their own gear at his peak optimal outcome...Now i dont suffer upgraditis anymore,because when your audio system is already good and sound at his optimal level, you listen to your music without anymore back thinking... My wife love that upgraditis cure more than me if possible... Thanks for your interest...