Marantz SA-7 HIFI Tuning Fuses

I have used these fuses on other gear with good results. Wanted to see if others realized improvements using them in their SA-7 (gold or silver types?). The unit appears to have 6 fuses. If you have used them (or others) what are the fuses specs? Thank You
I would be interested in opinions on fuse replacements in the SA-11S1 also. I replaced my amp fuse with a Hifi Tuning fuse and got a nice improvement in "bite".