Manley Jumbo Shrimp upgrade

Celtic66.
1 The Jumbo Shrimp main voltage fuse is a 600 ma slo blo. If you don’t find improvement (or very little) you can return the Synergistic Research Black fuse.

2 You have three tube types to manipulate, 12AT7, 5670 and the 7044.

3 Your output stage capacitors are MIT/Multicap 30uf x 2 total.
I’d proceed in this order one step at a time.

The fuse can make a very noticeable improvement in some components. It’s worth a try.
Charles

Gbmcleod,
As you well know this fuse topic has been covered numerous times on this and other open discussion forums. As geofkait noted the ratio is usually quite high in favor of listeners with a positive response. I do believe that some people can have such a negative bias and expectation of "no difference heard" that they’d never admit to any sonic improvement. Bias can and does work in both directions. I’ve heard fuses make a + difference in various systems and multiple components over the years. I remember very similar debates regarding power cables in the past, not so much anymore. My well meaning suggestion to celtic 66 is hey, just give them a try and see what you think.
Charles,