Ah-Ha, just as I suspected ... you haven't heard what the SR Black fuses can do. :-)
I agree exactly with your observation on the tonality of the unbroken in fuses. After swapping out the two SR Red fuses in the CD player and installing the SR Black fuses I did hear more transparency but not the overall musicality of the broken in Red fuses. But after the SR Blacks burned in, there was no comparison. The Blacks win hands down. No contest. I'm amazed. My audiophile friends who've heard the system with both the Reds and the Blacks are amazed at the improvements afforded by the Blacks over the Reds.
Give the SR Black fuse at least 70 hours break in. I think you'll be pleased and rewarded with the effort.
Take care ...