Marantz PM Ki Ruby vs Musical Fidelity M6si

Congrats !!!

I have a Marantz PM-KI Ruby and I like to replace the power supply fuse and power cable. Somebody knows the oem fuse measures?
I was looking for Furutech fuse and PS Audio power cable.

I already checked and it uses a 5x20mm 1.6A fuse. This Marantz PM-KI Ruby definitely needs a High End Fuse.

I had a $6 k Krell vanguard and bought the Marantz ruby integrated .
i know the musical Fidelity’s latest 6 , it is fast and pretty musical 
but the KI Ruby is for sure more fleshed out and involving especially instrumental 
depth and soundstage depth.saying it is harsh as with all quality equipment these amps take a solid 250 
hours to fully run in ,and for sure use a quality power cord , as well as replacing the 2 fuses in there which is a noticeable step up in resolution .and being in Audio for over 40 years ,observing the matched parts quality is much better then MF for sure the preamp is also active with seperate power supplies ,not passive the KI is a dual mono design direct coupled to the Copper speaker terminals, just look at the pictures,the others use cheap brass connectors also preamp is totally isolated and ,volume is regulated microprocessor much better resolution then the plastic carbon volume pots on the MF and copper chassis is $$ for its anti magnetic isolation they put in over a year designing it and voicing it it is a bit tube like but with SS grip and dynamics 
the Ncore modules put out not the stated 100 ,actual 170wpc into 8 ohms 280 into 4 and the  negative current feedback design truly controls Loudspeakers impedance loads. We played maggi 3.7s to the Amphion  3S monitors with  great control and musicality.Ken Isawata  died last year 
just after retiring after 40:years with  Marantz . This was his last effort,
and a very good one at that.RIP Ken, a true Audio pioneer.

I am detailing the parts in the KI Ruby,,I took a quick look inside and I believe there are 
2 fuses ,I will be replacing them ,one to the power supply , behind the IEC the wire loom is partially blocking it,
and the 1.6 amp T or slow blow ?always buy next size up 1.8 ampT if possible for stock fuses can vary over 15% these high end fuses are accurate and can pop
plus the engineers I spoke with and uncle which  is a design engineer said a minimum of 20% over tolerance is built into the design .