Which SR Blue or black Fuse


Which SR Blue fuse for ARC REF 5SE? It says 5A slo/blo 250V on the fuse but no size MM?any help? Anyone had any experience with either fuse and what was the result.
dskinner5
I've had plenty of fuses blow because my amp has a massive power supply and the most basic in-rush current limiting. I've gone through about half a dozen this year. 

If you need a reference from a tech who's fixed the damage exotic fuses have caused, talk to Ramtubes. 
I had a Hifi tuning fuse  blow up for no reason  A few years back. 
 Why bother taking the risk, even if it’s minuscule, for absolutely zero gain? 
Here's a perfect example of why that other tread was shut down: the hyperbolic, over the top, harping fish wives are taking residence in yet another fuse thread to wreak their havoc. 😄

All the best,
Nonoise