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In Reply to: RE: "my skepticism was instead replaced by a lighter wallet" posted by 1973shovel on April 29, 2017 at 09:28:44
But, assuming for a moment that I could hear an improvement, two things give me pause with boutique fuses. The first is the accuracy of their specifications. Does their 0.125 A fuse really open at more than a 0.125A current draw?
Good reason to pause. None of the boutique fuses have any independent agency listings (UL, CSA, CE, etc) to my knowledge. And while a UL listing doesn't guarantee that a 1.25 amp fuse will blow at 1.26 amps, it does offer an assurance that the engineering is sound and the manufacturing processes are consistent. The boutique fuses add some risk to the equation to be sure. I have only one component that I consider irreplaceable (my amp -- no longer made), and I'm almost glad I didn't hear any difference with the boutique fuse in it....it retains its UL listed Littelfuse. Maybe something subconscious was going on there that I didn't even know about.
Thanks for the additional info on the regulators (I hadn't read your post below). I guess I need to go yank the cover off my DAC now... :)
I'd be sure to check out where some of these "magic" fuses are manufactured.
This warning is not necessarily audio related, but a good friend who owns a local auto repair shop encountered a Chinese made glass bodied fuse that was stamped 10 AMP but would not blow when it was fed with over 30 amps. It caused an expensive wiring harness fire in a custom 1970's model Chevrolet C10 pickup that had a worn out heater/AC blower motor that was pulling over 30 amps draw after running on high speed for about twenty minutes.
The customer stated that he bought an assortment of fuses packaged in a plastic bag from a discount auto parts store and used one of the fuses in the heater blower spot in the fuse box. These were Chinese made fuses according to the package.
I only wonder if some of these un-rated "boutique" audio fuses might be subject to the same condition. I'm not pointing any fingers or making a wild accusation. Just curious.
I consider my amp irreplaceable too, given that there were only 100 made. I could see me trying to explain to Nelson Pass that I was trying out a boutique fuse, and smoked my First Watt F1J.
You're welcome regarding the Belleson regulator info. I admit that I haven't tried any of the other brands of "boutique" regulators, and maybe some perform better than the Belleson. I just know the level of improvement I got for $55 wasn't small.
When you see what's inside your DAC, if I can be of any help, just let me know.
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