My third Swiss box is now in place on my Innuos Pulsar streamer. Another gain in sound quality. These are easily the best component/tweak upgrade I have experienced. Just wonderful. The Audiophile’s Wife agrees 110%.
For me and in my system, the Graphene Sluggos are king of the Sluggo hill. They are the most refined, natural and easeful sounding. They make me want to listen longer. Better depth and layering. I like the pure copper also, but the Graphene is next level.