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
Chances are good you just experienced another DMT flashback. You’re up awfully late for a school night, young man. 
Maybe it’s just me but it’s a little alarming to watch an amp manufacturer try to explain high end fuses on camera. It’s probably a good thing the guy from NJ who asked him the question didn’t ask him to explain fuse directionality. 😀 Not to mention the guy from NJ probably didn’t install his fuse in the right direction, which would explain why he said his new fuse sounded a little too bright.
Maybe fuse lovers should try the same fuses that the experts choose to use when designing their gear? Might save some $$$$s. Make sure the contacts are clean and the fuse is properly installed for best performance. Also of course always make sure the specifications are correct for use in your gear. You might not be able to afford top of the line VAC amps but you could probably squeeze the fuses they use.