That's the only fuse I trust in my electronics (I am happier when they aren't fried -- they tend to sound better that way).
Also, for surge and fault protection: if your Spectral amps have crowbar fault protection, Littelfuse SCR's and diacs are there as a replacement. Unfortunately, they no longer make the PA series MOV's (Galco sells an equivalent).
All in all, solid company and solid engineering. I, for one, wouldn't be surprised if their engineers don't know about wire directionality. Whatever that means. In an AC system.
Also, for surge and fault protection: if your Spectral amps have crowbar fault protection, Littelfuse SCR's and diacs are there as a replacement. Unfortunately, they no longer make the PA series MOV's (Galco sells an equivalent).
All in all, solid company and solid engineering. I, for one, wouldn't be surprised if their engineers don't know about wire directionality. Whatever that means. In an AC system.