I agree with the OP, the price of the SR Blue Fuse seems out of whack. I figure part of the price is the engineering that went into the device. I don't know what material and manufacturing cost would be. However, since there was a 30 "trial" period I bit for the thing and was shocked I heard an immediate change in my system's sound and it was something I liked: more dynamic, ease and detail. With my gear it was a plus and I kept the fuse. It was installed in my PrimaLuna Dialogue integrated.
Furutech fuse
Back story. I find the prices of Synergistic fuses extortion. Like someone charging $100 for a cup of water in the desert. The product may have value as a tweak, the materials do not justify the price to me.
However, ever the tweaker, I succumbed to buying a $40 Furutech 20mm 4 amp fuse for my preamp.
It’s rhodium plated OFC.
I tried it in both directions. Yes, it sounded more coherent in one direction than the other. I ran it for about 10 hours.
I did not like the sound. Etched and dry with reduced bass. I swapped back the original.
However, ever the tweaker, I succumbed to buying a $40 Furutech 20mm 4 amp fuse for my preamp.
It’s rhodium plated OFC.
I tried it in both directions. Yes, it sounded more coherent in one direction than the other. I ran it for about 10 hours.
I did not like the sound. Etched and dry with reduced bass. I swapped back the original.