I am open to many tweaks that require an open mind and when people were mentioning Sluggo's were directional I thought how could a solid piece of metal be directional. So I gave it a go comparing Sluggo's (silver, copper graphene with many hours)in different directions. I could not hear a difference on my system. If others are able to hear a difference great for them and enjoy. It will be interesting to see what Mark and his team experience on their testing.