On the subject of changing fuses in SACD players, going to the SR Black fuse makes a major improvement. If on a budget please try a Black fuse first.at the incoming power cord location, The Marantz has six additional rail fuses. And in fact I replaced all six fuses one at a time giving each fuse 150 hrs of burn in, before adding the next fuse. I really was surprised that the fuse that supplies power to transport mechanism made a significant difference but it did.
It is so inspiring to have one's system really dialed in. I do think the Black fuses make that event much easier to obtain.
David Pritchard