Upgrading Fuses

Has anyone else tried the new Audio Magic Nano Fuses?

I have the classic Hifi Tuning fuses in my Magnepan 1.7's. These make a huge difference vs. stock. Much better details, more attack, tames top end harshness and opens up the soundstange. I would say this is a must for the 1.7's! I have recently put in a new Supreme fuse into my NAD M3's pre-amp section. Wow, huge difference. The soundstage extends much deeper in the room and instruments are now seperated and easy to listen to. The effect was mostly on the top end and overall the amp simply sounds much more powerful. I tried putting silverstars in the amp section of the NAD, but the top-end overwhelmed the mid-range. I would like to attempt to replace the classic fuses I have in the Magnepan's with the new audio magic fuses or furutech. Does anyone know which fuse has the smoothest top end, with a balanced mid-range?

I have a theory on fuse directionality...I installed the HiFi Supreme fuses in my pre and then source. Because of all the direction controversy I was compelled to test this myself on the pre(CJ CT-5) where its installation made a pronounced difference. Upon switching directions shortly after initial install (A>B>A), I wasn't convinced of a difference - but after about a week I noticed a slight edginess in the treble - and recalled that others have noted this with 'wrong' direction installs. Reversing the direction this time did make the difference.

So my opinion is that the fuse has no intrinsic preferred direction, but that the high voltage 'tunneling' effect is what causes the difference in sound. Tunneling effect is reasonably well accepted for interconnects/speaker cables, and the voltages here are certainly higher so effects may be even more pronounced? If others have noted audible differences, or determined they were installed in the wrong direction, only after some hours of initial use - this would support the tunneling theory. Any better ideas?

Sorry if someone else posed a similar thought - there are too many 'fuse' posts to read thru.

AJ

Noticed I used 'voltages' flagrantly. Although this is AC, the load, or draw, is presumably directional - So I should have said load.

I've tried it and it made a difference. It made my system more open, faster, articulate, tighter bass and more fluid treble. Listening to familiar music netted new details unheard before. I've tried it first on preamp and heard the change immediately. After that I changed the ones in the amplifiers. The difference became more obvious. Same presentation but more obvious to hear. I don't have golden ears but in my opinion a revealing system.

Changing fuse direction also changed the sound. This time it lost the openness and became darker. Bass became rounder, less detail overall but still better than stock (Bussman ceramic). I guess it depends on what the listener likes.

I just popped in two 5A slo blo HiFi Supremes in my old Acoustat tube servo amps.

The two 1/2 amp fast blos are on back order,but even with the job half done,the sound has improved.

Hard to describe to those who haven't experienced it,and when you try the best you can say is that things just improve in all areas.

Next up is my cd player,but it is costly,Nano fuse is tempting, but I've had such good sound with the Supremes I hate to use anything but them,if only for consistency.

When done that's 9 new fuses so that's about a $1000.00 investment in fuses.

I can hear the riddicule,but it doesn't faze me.

I've experience with other tweeks costing as much or more that haven't been as positive as the fuse upgrades.

And when it comes to swapping tubes or interconnects looking for the big improvement, most times they fail to live up to expectations,so you keep investing in those same tweeks, over and over.

To me a one time investment of $90.00 on a fuse doesn't seem foolish.

But for it not to appear foolish, you have to try it for yourself.