Wow! I just read the description of the Stein Music Harmonizer... It seems that my battery+magnets stones and crystals cabled connected grid has something in common...I am glad that someone has a similar idea before my experiment...I am not the only glad fool in town...
The good news is that my grid make the same thing that the harmonizer do, music float before me and does not come from the speakers...All is better, timbre,imaging etc... The price of my grid is way,way, lower than the price of the Stein apparatus...I cannot afford costly gear or products...Thanks GeoffKait for the information really...