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A case study...

Posted by Lew on April 25, 2017 at 08:55:39:
I have long been a sceptic on fuses, an agnostic at best. But last year, I was in a room with 3-4 well respected and rather well known audiophiles, two of whom are in the business. We were listening to a "high end" system that used a passive linestage. The linestage was electrified only to provide a power source for a db meter installed into its faceplate. No part of the linestage per se was connected to AC, otherwise. The owner of the system had just received some expensive boutique fuses. So we were joking about trying out the fuses in the AC supply to the passive linestage. This we did do after an hour or more of listening to the system with its OEM fuses, which were nothing special in terms of cost or construction. A priori we all agreed that we were not going to hear any difference due to the introduction of the expensive fuse, because the fuse was not really in the audio circuit. But we did; all 4 of us agreed that we did. What we heard was that the expensive fuse did not sound as good as the cheap fuse. We verified the observation by switching back to the original fuse, after about 20-30 minutes of listening to the boutique fuse, an ABA comparison. Things got better with the cheap fuse re-inserted. So, now I believe that fuses can make a difference but the difference is not necessarily correlated with cost of the fuse.