willgolf ...
As I said in my above post ... the prototype is more tube-like in the midrange in a very good way than the QSA Yellow fuse. I’m not knocking the QSA Yellow fuse. It’s just a matter of preference. Midrange ... human voice, cello, violas, tenor sax ... etc.
Keep in mind that all of this could be system-dependent. Plus, there is probably more break-in time needed to fully evaluate the fuses. I’ll know more when my third regular audiophile friend comes up next Sunday.
As a side note, this evening I was playing the Bud Shank flute & Koto album. I’ve never heard it sound like this before. Amazing.
Stay tuned.
Frank