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
Granted, on a scale that encompasses all we hear when listening, the differences can be stated as small. My Marantz Reference components are no slouch in design and construction. Ken Ishiwata is a well respected designer and he went deep into the design to extract the best sound possible.

Having said that, that small difference is in the unmasking of subtle cues and background hash that obscures what's in the music. The result is a fuller and expanded version of what lies hidden. Now, nothing is holding back the full potential of the amp (or source).

It's like that last click on the focus ring of a camera. A small click, sure, but look what it just did.

All the best,
Nonoise
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