Rodger,
Thank you as well for pointing out the use of Teflon as well. It makes me wonder if it is responsible for the length of time it took for the HiFi fuses I used to come into their own. At first, they sounded awful. It took a few days of 24/7 playing to break them in. People around here report no such thing with other types. Yes, there were some areas that needed improvement but all in all, they were impressed right from the start.
Now I"m getting the hankering to try some Littlefuses but my system has never sounded as good as it does now (thanks to a lot more than the fuses which were inserted a couple of years ago). I feel my audio nervosa kicking in again.
All the best,
Nonoise