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
Seriously Slaw.
I would love someone I know and trust to try them as I know we would receive a honest report.
But.... $225?
Do they have the same return policy as SR?
I bought a Jolida (Black Ice) Sound Expander (between cdp and amp)
a few years ago.  I had to send it back to them, to install a SR blue fuse.
When I got it back, all the techs agreed that it sounded better
with the new fuse, right out of the box
Sweet SGordon.
I had one of those Black Ice Sound Expander units and thought it was great for the price.
I rolled a few tubes in it to boot.
But then change of configuration meant it was surplus.
I assume from your statement that it utilised an internal fuse soldered in place which was what they replaced.
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I must admit there are a few things I have done regarding audio besides just fuses that have made a clearly audible change without an easily explained rationale.

Tell me about it.