I had a couple of SR fuses immediately blow when doing a test a few years ago, and I have never had a decent Littelfuse self destruct or do anything but its job. Expensive fuses don’t and simply can’t make any difference by providing sonic improvement over stock fuses supplied in modern gear, and if people swear by hearing some sort of improvement after swapping out regular fuses for "magic" ones, they’re simply riding the warm waters of expectation bias. Claiming there is some wonderful improvement with magic fuses by offering piles of hyperbole doesn't prove anything but what you "feel" is happening, but that often has little to do with facts these days...I "feel" my cars go faster when they’re clean, but I also know they don’t.
