Fuses on Marantz SA-10?

I had to open my Marantz PM-15S2b SACD player and discovered 4 fuses on the main board. Easy to get at but with that many, I just tried some mid priced fuses and got great results. 

As for any AC fuses at the inlet, I couldn't find any so I left that part alone. The fuses all looked to be in the audio path circuit which could be why the sound improvement/change was immediate and repeatable.

Just pop the hood and take a look. 👍

All the best,
Nonoise

Thanks Nonoise,

I don't actually own a SA-10 but am considering it as future upgrade. I looked through the on line manual and nothing about fuses is mentioned.
Thanks

@cmach ,
I found this shot of the in SA-10's internals. You can click on it for a larger image and even zoom in (just once). My eyes are old but maybe you can spot one but I couldn't see any fuses on the boards, and there are more underneath.
https://neby.no/produkt/marantz-sa-10/

All the best,
Nonoise