However, I cannot see how that same reasoning can be applied to fusesOn my VAC Sig MKIIa pre, I can easily hear the Hifi Tuning Supreme fuse directions. In the wrong direction, it sounds like out of phase. Image is fat, round, no weight ... I confirmed results with several VAC pre owners.
I asked Kevin Hayes and he said in theory, due to the design of the pre, fuse should not make a difference. I try not to think too hard and just trust my ears.