Fuses


I’ve read of views on whether amp fuses impart any sound quality or coloring. I had a recent experience that has made me re-think my views (fuses do not affect sound) and wondered if others had a similar experience. 
I have a Line Magnetic integrated amp. After heavy regular use for over 5 years, one day it just wouldn’t power up. After checking the power supply, I assumed it must be a blown fuse. I recalled that Line Magnetic sent with the amp two replacement fuses of the same type/quality that was pre-installed. I dug out one of them from storage, replaced the fuse and the amp powered up normally. 

What surprised and delighted me was the change in sound with the replacement fuse. Fuller bass, more detail and more warmth. I have rolled the tubes several times in the amp, and am attuned to the subtle changes that can make. Popping in a fresh fuse seems to have had a similar affect. And these appear to be cheap fuses, available for a few dollars at most. I don’t think I understand any of this. 
bmcbrad

So I installed the other .01uf Tinned Cooper Duelund on the mids capacitors, 115.8uf. The mistake i made the first time around was installing them at the furthest point away from signal output, after reinstalling them in the 1st position, they also sound amazing. 

Resolution, timbre, coherency, and soundstage all saw quite amazing improvements. My speaker system was absolutely nothing to sneeze at before the installation, but these have been a a extremely nice surprise. 

I am now solidly in the camp of bypassing crossover caps with small foil types 🙏 Sorry George. 

I still have 100's of hours before they fully settle in, can't wait to hear the final end result. 

 

Yep, the Duelund .01uf on crossover caps is a wonderful thing, I use the silver foil on Jupiter VT. I use same as bypass on my custom built 300B amps power supply to good effect. I've never bypassed coupling cap, never felt the need to experiment here.

The .01uf Tinned copper has been an absolute revelation.

I was up till 7 in the morning listening to album after album, non stop.

Everything sounded like I was hearing it for the very first time..... I am dumbfounded by how much of a difference these little capacitors made in my setup.....just dumbfounded.

Burn in has been especially crazy, at one point the sound lost all color, I have never experienced that before...and it came back after a while, and the sound became so incredibly liquid, and the soundstage became the most holographic I have heard on a speaker as of yet. Sadly that phase only lasted for a few hours, and I am hoping maybe they settle in eventually something close to that.

But either way, the clarity, coherency, and timbre are just exceptional.

This experience has convinced me, when I get my Magnepan 20.7s, I am building my whole crossover with just Duelund capacitors. Not settling for anything else. 

Yuviarora, found you over here on this thread.  I am in the planning stage of a crossover upgrade (sorry to be off-topic from fuses; mine are all Synergistic Orange).  My largest cap is 220 uF and next largest is 13 uF.  You sound very pleased with a .01 uF value bypassing a 115.8 uF cap, correct?  You mentioned having initially tried them in the wrong position, which I didn’t follow.  When you tried a higher value bypass cap, was it in the ideal position?  As I understand it, a good value bypass cap for a 115.8 uF cap is in the 1% range or 1 uF.  I have several .01 uF Duelund silver foil caps, but hesitate to try them with much larger value caps until hearing the experience you described.