what kind of S.G. have you?
If the sound of your audio system lack some clarity that will gives to you some more...
If you need more clarity use a little Herkimer diamond with it ...
if your system lack body and flesh, use my golden plate ( thin phone shungite plate +copper tape on one side) put the shungite face on the S.G.
For an optimal result use them all, the stones will balance the shungite effects, and the copper will polarize his effects... These golden plate are my own creation and low cost and very powerful... Nobody gives a dam because it is low cost … I dont sell my idea... :)
My best...