Just installed SR Blacks in my Maggie 3.6Rs. The blacks have replaced the reds, which sounded remarkably better than the Furutechs and SR20s. Two hours in--the blacks sound just as good as the reds right out of the box--I am hearing midrange information that was not audible with the reds--more space and decay, more inner detail. I am not hearing any of the harshness or lack of focus forewarned of before full burn-in. Perhaps this is because of their function in the signal path--they are not being held back. As with my reds, the blacks are 8A and 16A in the tweeter and midrange positions, far exceeding the stock 2.5A and 5A ratings. The larger filaments provide a more robust presentation--this has been the case with all the brands tried--like using a larger gauge wire. The fuses are no longer protecting--just improving. I look forward to an ever sweeter, wider soundstage as these blacks settle in for a few days.
Another score for those who have been believers--sorry naysayers and skeptics--these fuses are providing sound improvements that far exceed bias expectations or other variables such as cleaner contacts because of fuse changes. Try 'em!