Synergistic Research Orange Fuse

I use a higher rated Orange fuse in my tube amp with zero issues. You shouldn’t have any problem.

dhart86- tommylion is saying the same as me and we both are correct.
When my first Orange Fuse burned it was in a new Herron VTPH2A phono stage. So I called Keith Herron. Highly recommended, one of the best in the business. Told me way more than I ever imagined there was to know about these things. Plus being an x-ray tech I x-rayed and so know how these things look inside. That's how I know fast and slo blow are the same.

Anyway, Keith never blew a single fuse not even in testing nor any customer before me. Mine blew the instant the thing was turned on after being off a long time. As with most components the highest amperage draw is right at turn-on when the power supply caps are charging from being empty. That is max current draw. Yes even for high power amps. Right at turn-on.

Next thing he said, you didn't hear this from me, but if you want to use a higher value fuse its all right with me. Won't void the warranty. Won't do a thing. Because fuses do not work the way the so many around here think. But that is another one for another day.

Straight forward: Buy the higher value. Seriously.

Why not just contact SR and ask so you get the direct response and have a record of it in the event your amp does get damaged ; or if you do run into fuses that blow.

I just checked, and SR does offer a 15A Orange fuse. I would actually recommend the 16A to give you a little margin in case your amp draws more current at turn on. Any catastrophic event that will blow a 15A fuse will also blow a 16A.

Littelfuse has been around since 1927, designs award winning products for thousand of applications, and their fuse ratings are absolutely accurate...the fuse for my amp is superb and cost around a dollar. "Special" fuses add nothing to the sound of a component, and, as in the case of a pile SR fuses I tested a few years ago, it seems SR can't even properly rate their fuses. Avoid these.