UPDATE Herkimer diamonds:
I add athird little pack of H.D. to the 2 i already has added on top of of my Sansui amplifier transformer with the same positive results ....
After my "golden plates" Shungite+copper, the H.D. are the best minerals that create miracles in audio..... Tourmaline, kambaba jasper and agate and many others after that....
Remember that my herkimer diamonds were always used in complementratiry with other stones (shungite in the golden plate, or agate, or tourmaline mainly) to equilibrate and compensate the effects....It is in some way a tuning works....
I add athird little pack of H.D. to the 2 i already has added on top of of my Sansui amplifier transformer with the same positive results ....
After my "golden plates" Shungite+copper, the H.D. are the best minerals that create miracles in audio..... Tourmaline, kambaba jasper and agate and many others after that....
Remember that my herkimer diamonds were always used in complementratiry with other stones (shungite in the golden plate, or agate, or tourmaline mainly) to equilibrate and compensate the effects....It is in some way a tuning works....