08-17-15: Jea48Funny your brought up ARC ... I use after market fuses in all my components EXCEPT for ARC. Kal concedes after market fuses are higher quality but different timing so might not protect the component as designed.
I had the original OEM fuse in my ARC VT50 power amp for about 17 years and up until then it never blew. That is until a 6550 power tube shorted and luckily the fuse saved the day. After re-tubing the amp I installed another OEM fuse.
I feel safer using the OEM UL Listed Fuse ARC recommends for the amp.
Just curious, are the "SR Red, HiFi-Tuning Supreme, Audio Magic" fuses safety tested and Listed by any independent recognized testing laboratory?
All other companies such as Kevin Hayes, ... encourage I experiment and report my results. They are NOT KNOW IT ALL ... so gets my business.