Thought I’d post this as some owners use very expensive power cords on their P20’s
QSA fuses, at up to $2844 each.
They get rave reviews at :-
Quantum Science Audio series Fuses (stereotimes.com)
I presume to get the best out of the P20 you’d need 2, one for the mains plug and an internal one.
Aangen, thinking of you.
That’s more than the $1831.42 /ounce today’s close
on gold…
Best put my money on gold 
Those fuse prices are absurdly ridiculous…my .02…
Best wishes all
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That’s not even their most expensive fuse, there’s one that costs twice that. That said, Tweek Geek (their USA dealer) offers a 30 day money back satisfaction guarantee and the will replace the fuse once during the first year if you accidentally blow it.