Okay, just for the heck of it, I re-loaded my Parasound JC1 with all Furutech fuses. However, I had 4 small 10A Hi-Fi Tuning Silverstar fuses that I put in the post regulator power supply for the input stage. They are severely oversized, but enough for me to get an idea. These Silverstar are extremely fast and bright fuses, so much that they are way too bright in most systems.
What I got was an interesting wake up call. It added just enough attack so that it took the JC1 out of the “too warm” area. I got detail and resolution and excitement added to the mix. However, extended listening told me that the sound was just a tiny bit tilted towards the upper mids (making things sound just a bit high) and it gave me somewhat of a “click” sound in the high frequencies. However, it provided the detail and resolution, but still kept the fullness of body and the organic life and texture.
Based on this test, I’m going to be ordering a few Hi-Fi Tuning Supreme fuses to add into the mix, so I’ll have a combination of Furutech and Supreme. The Hi-Fi Tuning Supreme are faster than Furutech, but much more natural and less bright sounding than the Silverstars.
So, it turns out that I just needed a pinch more attack/resolution to bring the JC1s into perfect balance within my system. With all Furutech/stock fuses, the Parasound was just a bit too warm/slow in my system. System synergy is an important thing and you may have to work on tuning your scenario.
I will most likely be putting these 7b3 up for sale, but I won’t be able to do that until this weekend.