No. I have not (yet) tried any of these devices, although the Puron intrigues me, even more so that I have yet to see them popping up in the used ePay or usual used audio component sales sites.
They either work, work well enough to keep, or are so embarrassingly useless they get relegated to the box o’ junk that will one day be sold at the audiophile’s estate sale for pennies on the dollar.
The Swiss Digital Fuse Box came up again in this thread and I - being a skeptic, medical science trained as I am - have to ask the question NOBODY has thought to mention: why use a slug at all? Just unsolder and BYPASS the actual fuse slot, socket, clips, clamp or solder pads.
Using the SDFB already voids mfr warranty and UL/CPSC laws - IIRC - so what’s the difference?
How should a “SLUG” infused with gold, fairy dust or unicorn farts work any better than JUST the power cable itself into the IEC socket (and are the prongs in IT gold or fairy-dust infused as well?) then directly into the transformer or whatever circuit its feeding. Inserting anything into a signal pathway reduces its efficiency and introduces “noise” potential.
Not sorry. My eyes are just a little more open today - Leap Day - as I peruse the posts here and around the innerwebs.
This willful suspension of disbelief and skepticism seems to be David Hannum’s maxim writ large.
FWIW. YMMV. Spend it if you got it.