Anyone actually interested in improving the sound/presentation of their system and curious, as to whether a simple fuse change might make a difference, can audition the Synergistic, at home, for 30 days, without risk.
Click on the following and scroll down slightly. You'll notice a proclamation/seal, promising your money back, if dissatisfied.
No excuse not to try them for yourself (or a plethora of Synergistic's other products in your own home and system, with your own ears*) to dispel any mystery.
SO MANY variables
SO MUCH bias, unfounded opinion and REALLY SAD humor, from the usual triggered snowflakes.
*Obviously: one must trust their ears, as well as their capacity for discerning the truth, because the Denyin'-tologists will tell you, "You're crazy!" (or some variant), should you determine they improve your sound..
https://www.synergisticresearch.com/fuses/master-fuse/
HAPPY LISTENING!