My observations regarding these fuses, red is a good bet without question, Blue is better BUT may not suit all applications, they can upset the balance in the system. I would suggest using them in the mains plugs from the wall to power either Mains conditioners, large power amps. The black I find very hit and miss can work wonders in a 'Hello welcome to the BBC' (best plummy voice) type system but for those who wish to fully experience a more fully musical picture they can highlight the upper mid and top end more.

Only on use two blue fuses in my personal system.

I bought a set of hand-made pickups, for the "Gilmour" Strat I put together, from a guy in Russia.  The coils are supposedly potted in 80% paraffin 20% beeswax from his grandfather's apiary.  The variety of bee, however, was not specified.

I notice that claim seems to have vanished from his site now though. 

It may have been bollocks, but they are bloody good pickups.

He still uses beeswax, but I can't find a reference to it being from his Grandfather's bees now.

Iran, all I know about differences between AM beeswax ultimate and SR blue is than AM is more airy and more warmer than SR blue, SR only has slightly better resolution and also sounding cooler than AM but apart these differences what is more important is that fuses should have synergy with system

Hello Vahid

I would suggest this very system dependent, and the overall resolution retrieval and delivery of that resolution in the system plays a large part of how the AM fuses contribute to the sound, in two pieces of my personal system, the AM is absolutely head and shoulders above the Blue, in other parts it's just not suited at all.

Careful understanding of how your systems reacts with removal of said artifacts is paramount to which fuse you actually select for each piece of equipment.

Just to throw a curve ball, one of the Manufacturer O.E. fuses actually sound better than ANY fuse I have tried in that particularly application!

Impossible, I'm afraid. They are probably 20mm or 1 1/4" fuses so make sure you match the size and rating. Worth trying a cheap fuse upgrade like an AMR to hear if it makes a difference first?

If you have my luck it will go wrong maybe deep pockets wrong

Get Tony to do it and blame him

I've put a couple of SR Oranges in my two regenerators, where they really help resolution without verging on harshness (I previously had a Blue in my P10). Due to the heightened resolution of my system, I've learned by direct experience the difference between Blue and Red in my power amp. Having released a Blue from the P10, I naturally thought I'd upgrade the one in my power amp. Bad move as I immediately thought something was not quite right. The Blue had greater soundstage depth but it had softened the edges and reduced the dynamics of filigree detail that add so much to a song. Putting the Red back in restored the amp's extreme resolution of these tiny details and the depth is not at all bad.

So you can definitely go too far with the wrong fuse, in my experience. My system is now fused with Oranges in the two regenerator plugs and Reds in all the other component plugs hanging off the back of the regenerators. I'm currently not using the Blues.

So did I, but listening tells another story.  They are really quite different.  I wouldn't say one is more true than the other, but Red suits my system and listening preferences.  That goes hand in hand with Orange being superb for the regenerators.