30+ years ago: I tried some of the following*, in my first pair of Magnepans, to see if I could discern an improvement, before simply bypassing the fuse holder/attenuator circuit entirely (moved & resoldered one wire).
I'd never consider defeating the protection afforded any of my other components' circuitry.
Especially: their high-dollar/unobtainium power transformers.
Proceed at your own risk!
*https://www.riogrande.com/Product/sterling-silver-round-rods-dead-soft/101980