Determining current flow to install "audiophile" fuses.


There are 4 fuses in my Odyssey Stratos amp. I recently returned some AMR fuses because they rolled off the highs and lows a little too much for me. Mids were excellent though. Anyway, I'm getting ready to try the Hi-Fi Tuning Classic Gold fuses, as they are on clearance now for $10/ea. Are they any good? However, I have read that they are a directional fuse? Can anyone confirm this? If that is the case, does anyone know the current flow for the Odyssey Stratos? Or, does anyone know how figure out current flow by opening up the top and looking at the circuitry? 


jsbach1685
In 18 years of time I tested many filters and powercabels. But at this moment there is one device what impressed me the most regarding electricity. It is called Maxiimus. Again I was sceptical. But within 30 minutes I called Kemp Electronics to send the invoice.

The difference with or without is so big that you can't live without it.

http://www.monoandstereo.com/2016/04/kemp-elektroniks-maxiimus-p16-review_3.html#more

https://www.facebook.com/bobby.kingma/media_set?set=a.10156538782005083.1073741935.588405082&typ...

At the end it is not about what people say. You need to test and hear it yourself. And the difference in sound quality it creates will show the magic!


First of all the profit is not that impressive. You earn more money on speakers and cables. 

Our goal is to create the best results to improve the quality for the lowest costs. We don't focus on what will give the most money.

I give you another example; In 2015 we took many months to compare all the streamers and dacs there are on the market. To find what is the best. There was one brand who stood far above anything. This was Lumin.

So we became Lumin. Most shops in the Netherlands were not interested in  Lumin based on the low margin. How stuppid you can be!!

Audio always will be based on those products which are the best. They are the most easiest to sell.

We use shootouts to show that we have the best products. This makes it easy. At th end people want the best, so you need to give them the best they deserve!
"At the end it is not about what people say."

Says who?  


Oh right,  you.  🙄

We sell by shootout, people can make their own choices. If I had tested it before I would have sold it a lot earlier.

There are more brands in fuses. I had clients who used different brands. But when they compared to Hifi Tuning they replaced them.

Audio is comparing and testing. So test it yourself!!
Much discussion here about trusting your ears and how science cannot explain everything and yet, I am skeptical about the level of sonic difference (if any) that can be attributed to changing a fuse.   I am exponentially more skeptical about those who claim to clearly hear sonic differences between the installation direction of a fuse.

Have any of you who hear these differences ever really put that belief to the test?  I don't mean changing the fuse and then proclaiming how the sonic difference/improvement is clearly evident but rather a more challenging method of testing your ability to ascertain differences or improvements after changing a fuse?  

Here is a challenge;

1. Select two fuses that can be easily identified (e.g. Red and Black, etc.)
2. Insert one of the fuses in whichever of  your equipment you believe displays the greatest sonic impact from changing the fuse 
3. Listen for a reasonably extended period of hours to days using a variety of your familiar music, and take notes so you have a record of how the fuse sounds to you, and then repeat with the second fuse - keep track of which fuse is which in your notes
4. Enlist the help of a spouse or friend to install one of the two fuses and keep a record of which fuse is installed, but do not let them tell you which it is (for the test, make sure your spouse/friend installs the fuses in the same direction as you did under steps 2 and 3) 
5. Listen again for a similar extended period, compare what you hear with your initial two sets of listening notes and then write down which fuse you believe is installed
6. Repeat this process at least 5 times with the spouse/friend switching, or perhaps sometimes not switching, fuses but using each of the two fuses a nearly equal amount of times
7. At the end, let us know how many times you correctly identified which fuse was installed

If the differences between fuses are as profound as described in this thread, then I suspect many of you will guess correctly every time.   I would be curious to hear how you make out, and even more curious how you you do using the same procedure applied to the directionality of one fuse...any takers....Geoff?
I said to all my clients when you are not convinced send them back and You get your money returned. I never got any fuse back. Often people called me back and were amazed by the differences.

We care not talking about a small difference because then I would have got some back for sure. Even in subwo0ofers they make a big difference.

Most manufacturers of amps, pre amps and sources use cheap internal wiring. Here it is very easy to make a big difference.
Mitch wrote,

"Much discussion here about trusting your ears and how science cannot explain everything and yet, I am skeptical about the level of sonic difference (if any) that can be attributed to changing a fuse. I am exponentially more skeptical about those who claim to clearly hear sonic differences between the installation direction of a fuse.

Have any of you who hear these differences ever really put that belief to the test? I don’t mean changing the fuse and then proclaiming how the sonic difference/improvement is clearly evident but rather a more challenging method of testing your ability to ascertain differences or improvements after changing a fuse?

Here is a challenge;

1. Select two fuses that can be easily identified (e.g. Red and Black, etc.)
2. Insert one of the fuses in whichever of your equipment you believe displays the greatest sonic impact from changing the fuse
3. Listen for a reasonably extended period of hours to days using a variety of your familiar music, and take notes so you have a record of how the fuse sounds to you, and then repeat with the second fuse - keep track of which fuse is which in your notes
4. Enlist the help of a spouse or friend to install one of the two fuses and keep a record of which fuse is installed, but do not let them tell you which it is (for the test, make sure your spouse/friend installs the fuses in the same direction as you did under steps 2 and 3)
5. Listen again for a similar extended period, compare what you hear with your initial two sets of listening notes and then write down which fuse you believe is installed
6. Repeat this process at least 5 times with the spouse/friend switching, or perhaps sometimes not switching, fuses but using each of the two fuses a nearly equal amount of times
7. At the end, let us know how many times you correctly identified which fuse was installed

If the differences between fuses are as profound as described in this thread, then I suspect many of you will guess correctly every time. I would be curious to hear how you make out, and even more curious how you you do using the same procedure applied to the directionality of one fuse...any takers....Geoff?"

You’re kidding, right? It was only a matter of time before controlled blind testing reared it’s ugly head on this thread. I’m kind of surprised it hasn’t been brought up before now. Why, it's as if just bringing up the subject of controlled blind testing is supposed to scare the fuse affectioados into submission. Lol Your test procedure is even more complicated than The Amazing Randi’s Million Dollar Challenge test procedure and that’s saying something. If you’re so high on your test why not do it yourself? Let us know how it works out.



Geoff is not going to do anything to substantiate any of his claims except talk and even if he did who would believe him?
Beside my clients I knew many people who already used it. My sceptical thoughts made me wait so long.

My sceptical thoughts were based on nothing. Because I never tested it. Ronald Kemp gave me several times fuses to test. But I never wanted them to test. And now I have to admit that it was a big mistake of me not have tested it earlier.

It is not a substantial difference, because in audio you have many of these. No....it makes a big improvement.

Some clients of mine became even irritated why manufacturers use cheap fuses who cost about 10 dollar cent. I even contacted a few to talk about it.

They said; we know it can make a good difference but we create a source or amp based on the all the costs we have to pay.

Even when you would spend the same money on a better interconnect you are not able to get this advantage. This was what many of my clients said to me.

Audio is always about comparing and what will I get for improvement for the money I spend. And in my perspective you need to give each client the best improvement for the money they spend.

It doesn't matter how it is created, you want them to get the best for the money possible!

The Maxiimus is the same. When I use a number a person knows well I first let him hear the song without the Maxiimus and after this the same song with the Maxiimus. This difference is so big, even people get irritated. They say; how can I go listening to mu music without it.

This is an example that the device sells itself. And that is what the best fuses do as well.

Beside the good stuff I still find that over 95% of all products in audio shops are not worth the money. This screws the audio market for many people. It creates sceptical people and I understand why.

In the Netherlands there are some brands who say to shops that they are not allowed to sell some brands. This is getting more common, this is a big concern I think.

Let your own ears do the work, and you will find out what it does for you.
Not that it has anything to do with this thread but how does the Maximus work?
Lol Your test procedure is even more complicated than The Amazing Randi’s Million Dollar Challenge test procedure and that’s saying something. If you’re so high on your test why not do it yourself? Let us know how it works out.
Now I understand. The ability to hear differences between fuses and between directionality of fuses is limited to those having paranormal abilities.  Maybe Randi's test should have been to choose the best sounding between two fuses, without hearing them.

I can also understand how listening to two fuses and choosing which one sounds better would be a "complicated" procedure to someone who possesses a supernatural ability to intrinsically and immediately select the better sounding fuse.  

I don't do it myself because I don't hear a discernable difference between fuses, but I am open to trying to understand, just not so open to BS.
Mapman wrote,

"Expectation bias expectation bias is no doubt a factor. I did the audiophile fuse thing recently with a synergistic red fuse in my arc sp 16 recently using a fuse given to me to try. I thought I heard some difference with that versus stock fuse at first but could not be certain after repeated tries. Reversing directions did nothing. I wanted to hear something but did not feel compelled to having been given the fuse."

Your lack of success with the Red fuse and with fuse directionality is duly noted.


Mitch wrote,

"I don't do it myself because I don't hear a discernable difference between fuses, but I am open to trying to understand, just not so open to BS."

Your inability to discern differences between fuses and presumably to discern differences in fuse direction is duly noted.  

Mapman wrote,

"I'm sure anyone selling high profit fuses is all for them."

Psychiatrist:  How much is a loaf of bread?
Rainman: It's about a dollar.
Psychiatrist: How much is a car?
Rainman: It's about a dollar.


Why, it's as if just bringing up the subject of controlled blind testing is supposed to scare the fuse affectionados into submission.
Don't be scared Geoff, defender of all things unexplainable.  This fuse issue has been discussed ad nauseam.   We have heard the science, and how the delta in the resistance offered by different fuses, or by changing the fuse direction, is miniscule, and likely less than the difference of increasing the length of your speaker cables by one inch, for example.  We have heard from respected equipment designers, and others, whose dissenting opinions have been disavowed.  Mostly, we have heard about the profound sonic improvement these aftermarket/boutique fuses offer to those who have replaced the previous version of such fuses with the latest version, or to those who have replaced stock fuses (aghast!) with "audiophile approved" fuses.  More power to them.  

If someone hears a profound improvement in their system for a cost of "only" $120....or $174, then great.  My current system has 10 fuses, so I could easily spend between $1-2K replacing fuses and I would hope to hear a significant improvement for that money.  I just purchased new amplifiers and if I switched back to my previous amplifier, I could tell you every time which amplifier is in the system, blindfolded or not.  Why should a simple test to determine the reliability of sonic differences between fuses be so scary?  Why wouldn't those spending over $100 per fuse want to know if they are really hearing a difference? Is the emperor not wearing clothes?
Mitch wrote,

"If someone hears an improvement in their system for a cost of "only" $120....or $174, then great. My current system has 10 fuses, so I could easily spend between $1-2K replacing fuses and I would hope to hear a significant improvement for that money."

I have some good news for you. You can obtain a reasonably big improvement for nothing. Gee, how can I do that?, you ask. Easy, just reverse each of your stock fuses one at a time. You may have to wait a period of time between each audition depending on how long it takes your system to warm up.  I recommend not trying auditions with a cold system. Listen after each time you reverse a fuse to see if the sound improves or gets worse. When the fuse is in the correct direction the sound will be noticeably more open, natural sounding and coherent. If the fuse is in the wrong direction the sound will be relatively harsh and thin sounding and less realistic. After you have done that for all 10 fuses you will have considerably better sound than you started out with. You have my guarantee. Go on the assumption that 5 of the 10 fuses are in the wrong direction, but it could be a little more or a little less. If you can’t tell if the sound improves or gets worse for a particular fuse leave it as is and proceed to the next fuse. After you have auditioned all ten fuses you can repeat the process to see if you might have guessed wrong on a fuse or two. This whole exercise should be especially revealing since you have 10 fuses,

geoff at Machina Dynamica



Post removed 
It's getting so bad you need a scorecard to tell the difference between a skeptic and someone who's just superstitious.

This is an interesting thread and very entertaining to boot.

What occurred to me after plodding half way through was that it reminded me of a debate I once heard between a believer and an atheist.  At one point the atheist got quite upset because he just couldn't convince the believer that a  Higher Power couldn't exist. Eventually, the atheist started exuding a very hateful diatribe.  It occurred to me at that point that he was spouting hate against a God that he claimed didn't exist. 

Okay, with the above said, as most of you know, I'm a real advocate of the SR Black fuses. They  have literally transformed my audio system.

Here's my disclaimer ... I have NO technical training in electronics. When it comes to math, I have a hard time with simple arithmetic. I am so old that I'm still amazed that airplanes can fly without propellers. HOWEVER,  I DO KNOW WHAT I HEAR.   

I've been in the audio hobby for almost 50 years. I've had a crap-load of different equipment in the system over these years. It has ranged from simple receivers to Ralph's OTL amps ... to my current all ARC system. Its ranged from a simple Altec horn speaker for a mono system, to huge electrostatic panels. .I've been through the modified Dynas and the other vintage electronics.  I know when the sound is improved, or when its degraded.  If you asked me WHY something works or doesn't work, I haven't a clue. And guess what ... I don't care. I'm in it for the music .. and the music only. The upgrades only get me closer to the music .. and that's the ONLY thing I care about. 

Here's what I do know ... fuse upgrades make a significant difference. I went from stock fuses to HiFi Tuning fuses ... and the sound improved. From there, I went to the SR Red fuses ... and the sound improved in a MAJOR way. From there, I went to the SR Black fuses ... and the improvement over the SR Red fuses was mind blowing. 

After the two SR Black fuses in the CD Player were broken in, I took one out and placed it in my phono stage to replace the SR Red fuse that was in there. The first thing I noticed was that the sound was diffused, like the system was out of phase. So ... I reversed the fuse and wallah! ... back came the focus and the musicality I had before.  

So, for all of you "non-believers" out there, you will never convince me that the fuses are  not directional, or that fuse upgrades can't make a difference. And why you naysayers rail with so much negativity against fuses that you say won't work, or are not dimensional, is beyond me. 

Oh yea of little faith.  :-)



 
Little faith-yes. Most "faith",around the world, is in nonsense. Reality doesn't require faith. It simply is.

These guys are shilling, with this voodoo stuff to suck in the gullible, who have no idea about AC (alternating current) mains theory.

They are relying on "expectation bias" (+1 Ralph) with the gullible not to send the 10c fuses back for their $100 refund.

Even if 50% are sent back, that a hell of a profit still, then that 50% gets resold, not even as used stock, eventually all are sold, with a massive profit margin in the end.

Quick way to make a fast million with very little outlay, probably even better than getting in on the ground floor of Apple shares.

Cheers George

georgelofi

As the great Bill Withers saaeys "if it feels this good getting used then come on and . . . . "  I am sure you get the idea my man. Maybe not, but I think Bill says it all.

My synergistic red fuses are amazing. I want a black one for my r2r ladder dac or sigma delta, or maybe it is another type, I just don't know for sure. I think I don't care really. You know as Bill says.


I made a reply to say how big the % is of all the products in audio shops what is not worth the money. But they removed it.

Audio has become a monopolistic world, this makes people sceptical, it is understandable.

My clients can send anything back when they would not be statisfied. And get back 100%. 50% back? What kind of world do you live in?


Oregonpapa,

I have been doing this for a long time too. I will not presume to tell you what you hear, no more than you can tell me what I hear, or don’t hear.

Comparing whether one believes in the sonic improvement of a fuse with whether one believes in God is the type of thing that stirs the pot here. Particularly when you say,
And why you naysayers rail with so much negativity
I don’t think you will find "so much negativity" in my posts, just a challenge to those who hear such an improvement to really try it for yourselves in a controlled manner.....maybe you have already done that but I have not yet seen a post here from anyone who has. Geoff’s immediate response about controlled blind testing rearing "it’s ugly head" the "Amazing Randi" and trying to "scare the fuse affectionados into submission" is as negative as anything I posted. Even so, I find Geoff’s posts semi-humorous and consider our back and forth to be friendly banter. To proclaim that all who do not believe in the transformational effects of an audiophile fuse are "railing with negativity" is both not accurate and not helpful.
bo1972 " ... Audio has become a monopolistic world, this makes people sceptical, it is understandable."

You must be joking. There's never been more high quality choices available to audiophiles than there are today. I realize that you think that "over 95% of all products in audio shops are not worth the money," but obviously there are many who don't agree. It certainly is not a monopolistic market.

Mitch wrote,

"Geoff’s immediate response about controlled blind testing rearing "it’s ugly head" the "Amazing Randi" and trying to "scare the fuse affectionados into submission" is as negative as anything I posted."

I realize my comments can be perceived as negative but actually I’m only trying to be helpful and uh, positive. The reason I made the statement that controlled blind testing raised it’s ugly head is simply because many skeptics use blind testing as sort of the arbiter of controversial tweaks like fuses, as if blind testing will PROOVE that the controversial tweak in question - like a fuse - doesn’t work as advertised. The reality is that no tests not even blind tests, in and of themselves, can PROOVE that the thing in question doesn’t work as advertised. Any test, blind test or whatever, is only a data point to be considered along with other tests. There are many reasons a test can yield negative results so one must take results from any test with a grain of salt.

The reason I mentioned The Amazing Randi is because (1) at one time he offered a Million Dollars to anyone who can hear the difference between really expensive audiophile cables and cheap audio cables, (2) he offered a Million Dollars to anyone who could pass the controlled blind test for the Intelligent Chip, and (3) because your humble scribe was the subject of five of The Amazing Randi’s diatribes published in his weekly Nesletter; it was probably the Intelligent Chip and the Clever Little Clock and the Teleportation Tweak that got him all wound up.

See, it’s all good. It’s all positive.

geoff kait
machina dynamica

One thing that has become crystal clear to me is that those who hear improvements brought about by the fuse upgrades enjoy a healthy sense of humor ... and those who don't ... don't. 

Carry on ...
I have NO technical training in electronics. When it comes to math, I have a hard time with simple arithmetic. I am so old that I'm still amazed that airplanes can fly without propellers. HOWEVER,  I DO KNOW WHAT I HEAR.  
oregonpapa, That's typical for most of US population and that's why fuse, hook-up speaker or component wire and other tweaks are so pricey. Not because they REALLY make difference, but because of inability of waging magnitudes of values and extremely poor math. 
Oregonpapa, let's suppose that in an automobile-related forum someone were to claim that changing the wiper blades on his vehicle from Brand X to Brand Y improved his gas mileage by 10%.  It would seem safe to assume that pretty nearly all of us would conclude that the person making the claim is either mistaken, or deluded, or has a financial interest in Brand Y, or that something other than using Brand Y was responsible for the improvement. 

And unless there were indications to the contrary I for one would tend to presume the most likely of those alternatives to be the last one, that something else was responsible for the improvement.  For example, perhaps it had been raining frequently, and the better visibility provided by the new Brand Y blades, compared to the aged Brand X blades, resulted in the person driving a bit faster, at a more fuel efficient speed.

To those of us having an extensive background in electronic design, or to at least most of us having such a background, and who have a better than average understanding of how this stuff works, assertions that fuses can have directional characteristics that are audibly significant (especially in AC applications), engender similar reactions.  In my own case, though, as I stated in one of my posts in this thread dated 4-13-2016, the degree of my skepticism is "limited only by respect for perceptions that have been reported by a few members I consider to be particularly credible."

Now, why should it matter that none of the assembled experts can come up with an explanation for fuse directionality that we consider to be even remotely plausible, beyond the several possibilities that have been cited involving extraneous variables.  (And btw I would have no problem if anyone who so chooses were to put the word "experts" in quotes).  Well, as I said in the SR fuse thread, in a post dated 3-28-2016: 
...one reason I attach significance to the lack of a confidence-inspiring explanation is that it lessens the predictability of whether a particular tweak will benefit a particular component in a particular system. And one reason I attach significance to a reduction in predictability, despite the existence of return privileges, is that ... assessment of a tweak involves an investment of time even if it doesn't involve an investment of money.
Regards,
-- Al
 
 
Dear cleeds: the advantage of today is that you can get a much higher level in quality than before. But beside this you can get so much more different products and new brands than before.

In 2015 I met several people who spend a lot of money on audio and were nog happy at all what they received.

There are even highend brands owned by investment companies these days. Here you see that the quality is getting less. I will not use the names because then it will be removed again.

These brands are well known and my clients were very dissapointed in the quality these products gave.

In the last days I had contact with several clients of mine about fuses. I said: In the US many believe it is a scam. Many had to laugh.

I still believe that scepticism is being created by those products who are not worth the money. In audio most are......


"There are many reasons a test can yield negative results so one must take results from any test with a grain of salt."
 Agreed but, OTOH, many things we live with are subjected to testing from structural materials tests to make sure building materials meet their design requirements to crash tests for automobiles to air and water quality tests.  Some of the tests get things mostly right and others not so much.  With this audio stuff, it seems that testing has not "proven" anything, particularly as related to sound quality.  Sometimes the tests confirm why something sounds poor or good but other times there seems to be little correlation.  Maybe the tests are not always testing the correct parameters and/or maybe there are parameters that folks are unaware of, or for which there is no accurate testing equipment.

I will say that I did not know Randi inserted himself into the cable controversy or that he actually has a personal history with you and your products Geoff so I will chalk that up to "you learn something every day."  My knowledge of him was related to his paranormal abilities challenge.   Now I understand your response better.
Tests are better than words or theory alone when it comes to how things actually sound.
I just finished reading a blog post on economics where the author did a mea culpa for something he did many years ago as an example of "motivated reasoning". He chose to ignore the models at the time and went looking for something to validate his point. He failed, and became much more astute and rigid when it comes to using the models as they rarely diverge from actual reality (unless due to larger external factors not present in the modeling).

I would like to put forth an analogy here that posits that what models we have here (those who have tried and heard differences and improvements with fuses) are being overlooked by those who are motivated to ignore and refute them without resorting to the models for some firsthand, empirical experience.
 
The ad hominem attacks I've read here seem to back this up as frustration is the result of having nothing better to say or do to illustrate one's point, a point not based on actual, empirical experience.

Granted, the models are new despite being around for many years but it's really all we have to go on. I've yet to try and change direction of my fuses because it would be a daunting task and I'm simply not up to it. Besides, I'm very happy with the sound as it is with the HiFi Tuning fuses that I have. I can tell you, firsthand, that they did make a difference for the better. 

Not having any firsthand experience in changing fuse direction doesn't stop me from appreciating what others experience. It makes me scratch my head a bit but I'm not going to lose any sleep over it.

All the best,
Nonoise
Mitch wrote,

"I will say that I did not know Randi inserted himself into the cable controversy or that he actually has a personal history with you and your products Geoff so I will chalk that up to "you learn something every day." My knowledge of him was related to his paranormal abilities challenge. Now I understand your response better."

More good stuff. It was actually Michael Fremer of Stereophile who was going to take the Million Dollar Challenge and it was Pear cables that were the subject of the blind test. The person who was going to take the blind test for the Intelligent Chip was a customer of mine who went by the moniker Wellfed over on AA. Both negotiations broke down and the tests were never administered. Although someone else actually took the Chip test subsequently but flunked.  I’m pretty sure The Amazing Randi knew a good thing when he saw it and as the business of exposing dowsers and spoon benders and ghost chasers had run out of steam Randi probably thought, well, what better subject to go after than strange audiophile tweaks and super expensive cables? That’s pretty close to paranormal, no? Close enough for Government work, anyway.

ta ta,

Geoff Kait at Machina Dramatica
Mapman wrote,

"Tests are better than words or theory alone when it comes to how things actually sound."

Actually they aren't. For the very reason that we observe in your results with the Red fuse. You cannot extrapolate or generalize your negative results to make some grand statement such as, "I tried the fuse and didn't hear anything, therefore it doesn't work." Capish? Now, if a lot of folks reported negative results I might be inclined to say, well, the preponderance of the evidence is starting to turn against the whole fuse and fuse directionality thing.  Alas, such is not the case.
Math drives all the science:

The audiophile fuses industry consists of 2 parts:

Part A: CONSUMER:
Portion will "hear" somethin' and be happy and portion won't and ask for refund. The "happy" portion will generate income.

PartB: LEGEND:
Purchase fuse from mouser.com or few stones from BB&B or piece of rubber from Home Depot, attach the story or legend or other terminological abomination to get as many as possible for "happy" portion to get maximum profit.

Everyone knows that selling 'air' is most profitable -- just need to know how piece of penny can bring hundreds of $$ 

Got that right czarivey.

This is just a shill fest, for fuse manufacturers or retailers, who are cleaning up on the gullible here, with "expectation bias" (love that saying Ralph you need to patent it) or the too lazy to return for a refund crew.

Dam wish I was devious enough to think it up. Maybe I can sell stick on resonant dots that have been cryo’ed!!!!!


Cheers George

" You cannot extrapolate or generalize your negative results to make some grand statement such as, "I tried the fuse and didn’t hear anything, therefore it doesn’t work." "

Well I did try reversing directions and heard nothing so yes I can.

Don’t be scared......

You've done nothing but run your mouth.
Phew, what a discourse...
I have to say I am on the side of Oregonpapa, I have no electrical engineering experience either, but I have to say switching to the Hifi Tuning fuses made a difference to the sound my stereo produce. I only bought the fuses on the recommendation from SMc, and because the model was being discontinued and was on sale.
Would I have bought an $80-100 dollar fuse? No Way!
Since there are many variables that could have affected the sound (even the contacts of the fuse), I can't say for sure if it did something on its' own.
But, for my old ears, it did change something, mostly for the better.
As for reversing fuses, I would like to do this, but am now working more than playing, so it has to wait. Also, I don't think I can make a scientific/unbiased report when I have to power down the amp, replace the fuse and restart everything-every little change adds another unknown to the equation. 
I’m going to develop and market an audiophile grade bi-directional fuse and nip this thing in the bud. With this product, IT WON’T MATTER AND THERE WILL BE NO UNCERTAINTY! :-)
I’m going to develop and market an audiophile grade bi-directional fuse and nip this thing in the bud. With this product, IT WON’T MATTER AND THERE WILL BE NO UNCERTAINTY! :-)

We've already got one!

27 years ago we recognized that fuses can affect the way our equipment sounds. At the time, there were no boutique fuses, but we sorted out a fuse that in fact did sound better, and designed the sheet metal for our MA-2 to accommodate it. We still use this fuse today; interestingly enough it sounds better than the boutiques we've tried and it does not cost as much, although its not a cheap fuse by any means. However it must be built pretty well as reversing it in the holder has no audible effect whatsoever.

27 years- does that make us one of the first manufacturers to recognize this phenom? I think it does.


FWIW the stock slo blo fuse that came in my ARC sp16 appears to have been well thought out to start as well. It is quite substantial and unique in its build compared to most common slo blow fuses I have seen over the years.

How much a "good sounding" fuse need to cost is a whole other can of worms. Slo blo or otherwise.  It can cost as much as someone is willing to pay based on it "sounding better"  even if for totally unknown reasons.  

So its not a given that all high end vendors just shove any old fuse in there to start with. Good vendors tend to think everything over pretty carefully.

Another reason to not generalize and say fuse X always sounds better. What one starts with is certainly a factor as always. No mysteries there. A change in one case is not the same as in others.

Also interestingly the fuse is not symmetrical in its build which is obvious to the naked eye (unlike crystal patterns of metal) and reversing that does nothing as well.


Geoffkait wrote," You cannot extrapolate or generalize your negative results to make some grand statement such as, "I tried the fuse and didn’t hear anything, therefore it doesn’t work."

To which Mapman retorted,

"Well I did try reversing directions and heard nothing so yes I can."

I know you’d like to be the Lone Ranger in this but actually your test means nothing. Obviously it means a lot to you. Just not to anyone else. Negative results in any experiment can be easily explained any number of ways. Shall I expound on that thought?

Mapman had these afterthoughts,

"Don’t be scared......

You’ve done nothing but run your mouth."

Ouch! Very ouch! (One imagines it’s not much fun being an outlier.)

geoff kait
no goats no glory

PS for Atmasphere: time to catch up to the 21st century. A lot has happened in those 27 years. We have quantum chips and everything! ;-)


I know a person who works for a world know company. He was with some collegues in England at What Hifi. When they wanted 5 stars for their product they had to pay an amount of 4 digits.

At the end they didn’t pay and they got 3 stars. Tests often doesn’t garantee you anything.

The question is; when is a test objective and honest? I know many products with great reviews who were very poor. And also products with average reviews who were exeptional good.

I think you need a new and different way of perspective to judge audio products. And you know why?

Because they way it goes now in 10 years the audio market will decrease for sure.

It is not the question if it needs to change, but how because you cannot wait too long!


" uch!  Very ouch! (One imagines it's not much fun being an outlier.) "

You are not even that.   Just a cheap vendor who likes to run their mouth.
Mapman, yes I suppose I have a gift for word. You have a lot of posts, though, so you shouldn't feel too bad. I’m more into quality over quantity, myself. No offense intended. Let the twitching commence!

PS for Atmasphere: time to catch up to the 21st century. A lot has happened in those 27 years. We have quantum chips and everything! ;-)
Yes, the quantum chips are a hoax.