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
everywhere ,
that being said , for sure your sourse 
digital for your music signal

Actually my best fuse swap was actually to remove the cheap fuses that came with my Magnepan 1.7i speakers and replaced them with the silver tubes (not fuses) that came with my Powell Ag Magnepan upgrade. Besides the silver tube in place of the fuse there was also a silver jumper to replace the steel plate stock jumper. Using the above upgrades improved bass tightness and top end treble/cymbals. Of course, the ultimate bass upgrade for the Maggies came recently when I added a stereo pair of REL T/9i subwoofers! Wow! 
Uber,
Please do not try to deny that the wording of your query was not
deliberately intended to incite mocking.
My wife confused one for a suppository. She was not pleased but I think her hearing improved.

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