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
@geoffkait , I agree with your assumptions regarding fuses and their intended uses, which originally didn't include audio. I think it was just a matter of time before some forward thinking audiophiles took a good, hard look at what's out there and capitalized on it. 

Good for them. I wish I'd done it. 😖

It will forever be argued that the markup is too high but some these fuses and are seeming to be purpose built for audio applications while some are just rebranding. They're not all alike and some perform better than others so it's threads like this that help to sort things out.

All the best,
Nonoise
From a quick scan of military fuses it appears anyone can buy them from at least two sources, our old friends Littelfuse and Bussmann. I think the problem for audiophiles - aside from the obvious one, what they sound like - is that they are apparently all super fast blow fuses. If I’m not mistaken almost all aftermarket audiophile fuses are slow blow.
@geoffkait 
God... You just make things up all the time. The special thing about hospital grade outlets has nothing to do with the grip force. The unique feature of hospital outlets is that they are explosion-proof GFI outlets. You can't have sparking interrupt circuits in the presence of oxygen and highly flammable gaseous anesthetics. 
Costco, I see no reason for you to refer to me as God. Explosion proof? Maybe, but audiophile outlets and power cord plugs are still better sounding than hospital ones anyway. Just like audiophile fuses are better sounding than military ones. So who cares?

Have a nice hair day

From a quick scan of military fuses it appears anyone can buy them from at least two sources, our old friends Littelfuse and Bussmann. I think the problem for audiophiles - aside from the obvious one, what they sound like - is that they are apparently all super fast blow fuses. If I’m not mistaken almost all aftermarket audiophile fuses are slow blow.

A good aftermarket fuse is slow blow or very long time lag, in basic design.

IIRC, it is SOC that came up with the best time lag element design?

To this day, Japanese audio gear comes equipped with SOC brand fuses, and I opened up a 1973-4 manufactured Yamaha CR-1000 receiver the other day, and inside of it were original...SOC fuses.

That's at least 43-45 years of Japanese audio companies using SOC fuses. There's a reason for that.

All that being as it may be, we know that we are probably invalidating our given house insurance when we put the wrong fuse type or value or both...in the given gear, just because it sounds better (to us). (I don't play that game, personally, I use my own fuse designs)