Hi Fi Tuning fuses


Has anyone used or is using HiFi Tuning fuses to benefit sound. Is is worth it to use in Ayre preamp, Mark Levinson 532h amp and possibly Benchmark DAC? Thanks for respectable replies.
lnitm
Hi, the direction of writing on cables (unless specifically recommended) or the direction of the diode symbol or name on HiFi Tuning fuses are not (rpt not) the key to the correct direction.
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I felt it improved the dynamics in my Cary tube amp but only if installed in the proper direction! Placed the opposite way it degraded the SQ."
@three_easy_payments, I can't tell if you're being sarcastic or not.
@2channel8  yeah, I guess it could have been taken as sarcasm.  I was being serious.  Direction made a huge difference.
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I did put them down as recommended
But I did not change the directions
In order to hear that the result was better than 

But I ask a simple question
If the companies we pay them so much

They can not do this for us
Because a difference of $ 200 is really negligible to the price
Which costs $ 3500, for example

I have never turned to hearing if there are differences
Only if they are different from the original and there is a difference.
There are many other changes like polarity in electricity, and it changes certain equipment in the 90's