Hi Fi Tuning fuses

Meeeooow!

All I have to do is type the word lazy and Joy Boy shows up. 

🐈💩😷

@OP, 
As you can see, this topic brings out 'the best' in people. Try not to get discouraged.
As far as Hifi Tuning fuses, Steve McCormack believes they do improve sound quality.
As for Ayre, and Levinson, I would call them directly and get their take on it. 
I only own Ayre equipment, but my experience shows changing fuses to have negligible effect.
Bob

Yes, I recently stepped into a hornets nest with this topic as I tried out my first Hi-Fi fuse - an SR Blue.  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.