For those who do not have a replaceable fuse (ala the Oppo 95), this is a good place to try a WA Quantum chip on the soldered fuse. It's benefit is not of the same magnitude as a Synergistic Research Black fuse, but it may be better than the stock fuse. It was on my Marantz SA11-S1. The Marantz SA11-S2 has a replaceable fuse and was helped by the Black fuse.
David Pritchard
David Pritchard