Why don't amplifier Companies use high end fuses?


My equipment - Raven Integrated Reflection MK2 tube amp 58wpc. / Lumin A-1 DAC Streamer / Synology NAS / Isotex Aquarius Power Conditioner / Furutech Rhodium Plug / Sonus Faber Amati Homage Tradition speakers.  

I have read thousands of comments on upgraded fuses improving the performance of sound.  I am very open minded but not sold either way.  So, the question I have is....if fuses were so important, than why don't Amplifier companies all install them as OEM equipment?  To me, if they are as good as people say, that would provide companies who use them a competitive advantage?  

Every High End Audio store I go to in Phoenix have told me it does not make a difference and is a waste of money.  For the record, I have fuses purchased at an automotive store for under $10 and I think my sound is awesome.  The Company that built my amp tested the Synergistic Fuses and he emphatically said there was no difference.  

If I were to try a fuse for fun, given my equipment, what would your recommendation be to try?  
willgolf
Well, they aren't UL listed so if your house burns down the insurance company may well balk. 

I bought a used tube preamp that came with a HiFi Tuning "Supreme" fuse.  I tried it with just a regular $1 fuse and I couldn't tell any difference no matter how hard I listened.  I know that a lot of people will say, duhhh that just means your system isn't good enough to reveal the difference and I guess I can't really prove 'em wrong.


No, they really don't cost to much.  I am sure if Pass Labs wanted to put them in their amps they could get a deal.  I have tried a few fuses including Padis and SR Black and Blue and I could notice a difference between each fuse and the cheap 50 cent fuse companies put in.  
You want high end fuses? Try companies like Bussman, Littlefuse, etc. They manufacture fuses to very strict tolerances and industry standards. No way in hell would I put some "magic" fuse in any of my gear! This crap reminds me of the morons that wrap foil around the old screw in fuses or shove a coin in to bridge the circuit.
What ever happened to common sense? Do you trust a marketing dufus to know more than an EE?
BillWojo
Littelfuse (yeah...that's how it's spelled...weirdly) is missing an opportunity here. They should start a "boutique" line of their fuses specifically aimed at audio geeks and claim they've bombarded them (the fuses, not the geeks) with "quantum xrays" or something, paint them with a color resembling  graphite and claim to have deep frozen the things. Nobody would question them as they're already a well respected and established company, their fuses would likely work very well since they already do, and they could give 'em away to manufacturers as a publicity stunt since their wholesale cost is so small.