Hifi tuning are a very good buy ,if your system is on the warm side get the supreme silver,gold , if neutral the solid Copper is very good for $89
ceramic body finesilica inside , gold over copper end amps and Cryo treatedseveral days . Synergistic purple use “less conductive Brass with a git of Graphene coating
in their $200 purple fuses, the even have a White $600 fuse .
they recommend 1-2 , No thanks ,