Sorry - I have no idea he was putting shungite (whatever that is) on his "electrical service" and where that ends.
I never say he use shungite, i only give this mineral for an example that is for me very known for affecting electricity power like quartz....For other reason than quartz... Others minerals will work or not i dont know which one eaudiotweak use...I experiment muyself with 30 different minerals varieties...Then i completely trust theaudiotweak....
Are you using a power conditioner to smooth out the power spikes?
Yes mainly for a minimal protector against surge but i added my golden plates to it and other minerals to decrease his negative effect with success...