Where has been your most effective placement for an aftermarket fuse?


Not looking for a debate with anybody on whether aftermarket fuses work or not, this thread is for those fortunate members with the hearing to know that they do indeed work.
I am very interested in your thoughts and opinions as to where they work the best, the biggest bang for your buck if you like.
For myself I am going to say it is in my Metrum Onyx DAC.
And not just my present DAC, all of my last 3 DAC,s showed a very nice easily audible improvement with an aftermarket fuse.
Next I would say is in my Gold Note phono stage and lastly in my BAT integrated amp.

So what or where would you say has been the most noticeable piece of equipment that has benefited from a fuse change in your system?
128x128uberwaltz
What make/ model was the hearing aid?
SR Blue or Orange?
Did you have to uprate the fuse to prevent you literally blowing a fuse?
Inquiring minds need to know!
😎😎

Does this mean it is acknowledged that fuse results may vary based on application?

That is at least a step in the right direction from the usual hype in these parts to just Spend whatever is possible on the latest Synergistic color, no questions asked because they are inherently always most awesome (not to mention directional). 

Progress....🙏


My answer is fuse will make the most difference in line with signal to a speaker like fuse used in Magnepans. But there is still nothing concrete other than opinion and conjecture regarding how much a fuse need cost to do the job even there.
3 figures for a tiny mysterious device like a fuse should always raise questions.
Mapman
I have always considered the fuse application to be very subjective and from my experience equipment dependent.
Hence the thread to see if we can get some honest opinions that might bear that out.
You know all the time I had my Maggie speakers I never thought about swapping the fuses in them.😕😕
I believe Elizabeth did and was adamant it made some difference?