??? Fuse UpGrade??What Size???

The Cable Company has them on sale.  

I would call SimAudio (Moon) tech support to get their opinion/advice.  I've received helpful advice from them on my Moon 390 set-up.

One is 20 mm ,one is 32 mm, you can see if it looks small or longer

and if fast blow always go 1 size up I have had fuses go in fast blow fuses on startup why ? The cheap stock fuses can vary up to 20%  

I recently upgraded my fuses for my Shindo Mr T,Aqua LinQ transporter and Weiss 501 MK2 for the Pink fuses and after experimenting with the right direction and between 100-200 burn in time,I can hear a very noticeable difference with the soundstage(,wider and higher),Instrments and voices are more detailed and airy and the overall sound is more live. I also recently bought a Rel S510 sub and Wow! It was probably my biggest upgrade. I know adding a second sub would complete the 20% on the 80 % upgrade but I live in a condo with neighbours downstairs so 1 is satisfying for me, should have done this years ago.

IME the Vera-Fi Audio SDFB outperforms any aftermarket fuse on the market. Many excellent reviews here & elsewhere. Email Mark with any questions. He's very responsive.