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
Perhaps because we want the protection a properly designed and manufactured fuse provides, you know the ones by Bussman or Littlefuse for an example. 

😄😄😄🎶🎶🎶

Good Listening 

Peter 
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@kosst....What we think we hear ? Did you really make that statement ? Stop embarrassing yourself. Go back to your measurements. Your Focals did not wind up in your listening room entirely with the use of measurements, as you must have listened to them, with a set of ears, I assume. But, you know what they say, when you assume ? Then again, you needed your mom's approval. So, I guess that says, all that needs to be said. 
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well just maybe kosst, someone will see a post by you and not waste their $$ on snake oil