Question about suitable fuse metals


I've been wanting to experiment with audiophile fuses for a while but the cost and the concern of blowing one of these costly fuses has kept me from purchasing.  However, I read that solid slugs actually sound better than fuses and cost WAY less, so I purchased a 6" rod of 99.99 copper and, because I wasn't really thinking, also purchased another 6" rod of titanium.  I guess I was thinking of rhodium, palladium, or platinum, not titanium.   I had these cut down to 20mm and, so far have tried them in my amp, a Red Dragon S500, and my DAC, the Bel Canto 2.8, which I run direct without a preamp.   The titanium slug sounds pretty darn good in the DAC, noticeably better than the copper. I tried one in the amp as well and that combo did not work well at all.  The amp is doing better with the copper slug.  I looked up the electrical conductivity of titanium and found it is a rather poor conductor.  Is there any risk to the DAC using the titanium slug, given the poor electrial conductivity?  Thanks for any relevant input.

lcherepkai

These are not my words, but they ring true to me:

"An AC line fuse on the primary side of the power transformer is not going to make any audible difference, since the AC will be stepped down, rectified and smoothed into DC, then regulated before it reaches any amplification circuitry."

And if that's not convincing, let's ask the experts at ARS.  Where all audiophiles turn for unbiased opinions (come on now, every now and then they get it right)

" I do not say that any so called audiophile fuses are any better, I will say that if the fuse is not used directly in the audio circuit path, (ie it is used in the incoming mains ac power) it is highly unlikely to have any audible improvement for even the most golden of golden ears and I would place some money on those bets any day of the week."

For what it's worth, I bought a high end fuse for my amp after reading about them on this very site.  And the difference in sound was absolutely zero.  The only sound I heard was my $150 flying out the window.  My ears not golden enough?  Maybe. There are just some things that defy logic, and this is one of them.  If you are hearing a difference, then that's all that matters.  Cheers.  

@lcherepkai 👍👍  agree…for me it was a poorly wired outlet with old crumbling insulation which started to smell, turn brown and popped a breaker.  Wires/cords are most often the problem and should be inspected regularly.  

I am more concerned with damaged gear than the prospect of a catastrophic fire.  While there is the possibility that different conductors in the fuse will change the sound, any such changes would most likely be adverse, as compared to no fuse at all; your first experiment should be to bypass the fuse holder entirely.

The "magic" fuse (or insane elimination of same) efficacy myth stands to live on through the high end expectation bias fog as long as there are people who say thing like, "the new fuse let me see the facial expressions of the musicians." The fuse isn't in the signal path. Bigtwin is simply pointing out a reality.

larryi :  I'm certainly down with that possibility.  How would I go about completely bypassing the fuse holder?

 

wolf_garcia:  I'm not selling anything here.  I don't stand to gain by convincing you or anyone else that replacing the stock fuses with sold copper or titanium slugs improved the sound.  As you pointed out, "Bigtwin is simply pointing out a reality."

Well, that's exactly what I've done.  The reality is that by replacing the fuses with either copper or titanium slugs, I was able to hear more deeply into the sound and no, "the new fuse let me see the facial expressions of the musicians." did not occur.  However, listening to track #10, Emmeleia, from Into the Labyrinth by Dead Can Dance, it was not only easy to hear the inhalations as the singers took in breath, I could also clearly hear the parting of their lips after they closed their mouths, probably the wetting of their lips.  I've heard this in my system before but in a muted sort of way.  This was rather clear to my ear.  And this sort of insight occurred over and over again, listening to familiar discs.  Now, I suppose it could be some sort of expectation bias, if one exists that actually improves my hearing :)

 

Bigtwin:  I looked up your system and wow, that's a nice set up.  Sorry the audiophile fuse didn't benefit your system at all.  In my case though, I didn't try an audiophile fuse.  I tried a solid piece of 99.99% pure copper.  Maybe you should give that a try.