Quantum Science Audio light blue fuse; $71, what a bargain!

Wow! Just wow.

"Give Ed at the hornshoppe a call. He makes a fantastic preamp"

Yes indeedy. Had one made for me about 4 years ago hot rodded with just a single input. My system starts and finishes with this ugly box.
Ed also has a money back guarantee. That’s what lured me in. One of the best audio moves I ever made.

pauly
He makes a fantastic preamp and he’s not an irritating know-it-all

Advert.
There are no capacitors or resistors (other than the photocell) in the signal path.

Please with all that electronic knowledge of yours, what do you think that preamp is, and what it’s copied from??

@tommylion
Give Ed at the hornshoppe a call. He makes a fantastic preamp and he’s not an irritating know-it-all - he’s a pleasure to deal with.

Done too often you risk being seen as a crank at best or worse, a stubborn fool.

That ship has sailed … 

I can’t help but wonder how many other potential customers have been deterred by it?

Sorry but I don’t care, especially if I found they are "fusers"🤦‍♂️, they would never get one no matter what, if I knew.🙄

I ask you why are there no! "noted electronic audio technicians", posting and confirming in these pages for what you "fusers" say these ac fuses can do to the sound???🤷‍♂️

As someone who has a longtime interest in passive pres, and alternatives to variable potentiometers for volume control, I actually think George’s Lightspeed Attenuator has the potential to sound very good. I’d be interested in trying one, but the main hurdle I’d have to get over is his behavior on this forum. I can’t help but wonder how many other potential customers have been deterred by it?

Done too often you risk being seen as a crank at best or worse, a stubborn fool.

We wouldn’t want that now would we?

No no! one would never want to look like you, heaven forbid🙏

Okay. Goofy reasoning but okay. But you did not say vitriolum, you said vitriol, the plain meaning of which is cruel and bitter criticism. Alternate meaning, acid.  

As painful as it is the truth is so powerful that to try and stand against it, as you so often do, winds up destroying your credibility. Done too often you risk being seen as a crank at best or worse, a stubborn fool.  

We wouldn't want that now would we?

Why would anyone who favors fuses have vitriol for it?

The word vitriol comes from the Latin word vitriolus, meaning "small glass". (perfect description of a fuse)
And then can also mean vitriolic, and so "causes a lot of distress and pain", to those gullible enough who have just spent $$$$$$ on a 10cent fuse.

Cheers George

Vitriol is cruel and bitter criticism. Why would anyone who favors fuses have vitriol for it?

Not sure why when someone like georgefoofi who is on a self appointed crusade to harm a certain section of the industry is allowed to post his insults and vitriol.

Only to the snake oil AC fuse voodooist’s sunshine, that deserve it all, who have not one iota of electronic knowledge, just their own vitriol on AC fuses and what they can do for the sound.

Using anything but variable potentiometers for volume control needs to be stamped out!

Yes and one look at your last page of posting history shows you are a "voodooist" that can only comment on "snake oil" products, without 1 iota of electronic knowledge to present to backup your comments.

Please do point that post where I supposedly made a claim I cannot back up. Come on, show everybody how much “electronic knowledge” you have. 

Not sure why when someone like georgefoofi who is on a self appointed crusade to harm a certain section of the industry is allowed to post his insults and vitriol.

I think you hit a nerve. I’ve come to learn that those who insult online are people who crave attention as they get none in real life.

I see my post was removed???  Not sure why when someone like georgefoofi  who is on a self appointed crusade to harm a certain section of the industry is allowed to post his insults and vitriol.

@ozzy,    ' It seems like clever tweakers could install a high end breaker in place of the fuse'

Yes, like Mark Levinson and a few other manufacturers have a breaker as on/off and safety. Bypassing the fuse was tried after experimenting with a few fuses such as HiFi Tuning (better than standard),  Furutech (quite good but a little bright) Synergistic Research (somewhat dissapointing) and some others. The temporary fuse bypass gave me a result better than any of the fuses and gave me a target to strive for.  My wife and I spent some fun time changing the direction of the fuses and found 3 out of 6 were the 'wrong' way.

You have quite a system put together and I see you have your cables supported on some spidery looking things, I am considering doing the same, perhaps you have some advice to share.

Oh dear, another know-it-all

Yes and one look at your last page of posting history shows you are a "voodooist" that can only comment on "snake oil" products, without 1 iota of electronic knowledge to present to backup your comments. 

And because even if you had one iota of electronic knowledge you’d know this ** needs to be stamped out of the industry

Oh dear, another know-it-all … I do wish Audiogon would add an ignore option to deal with irritating gadflies.

@georglofi you have been around awhile, do you not get tired of instantly pouncing on every fuse thread??? Very tiresome.

Only if "snake oilers" are promoting them for "snake oil" companies that secretly sponsor them with their products.
As a 10cent fuse given away to them is reaped in rewards if/when only one sale has to come in for $71 each.

And because even if you had one iota of electronic knowledge you’d know this ** needs to be stamped out of the industry

lemonhaze,
Sorry no I didn't.  Are you saying you have done this and it works well?
It seems like clever tweakers could install a high end breaker in place of the fuse.

ozzy

@ozzy , did you not see my post 2 above this?

I wonder if anyone has ever tried a copper slug or a thick copper or silver wire instead of a fuse. I know it provides no protection, but I wonder about sound quality?

ozzy

lemonhaze,

Since I’m not brave (or foolish?) enough to go fuseless, even temporarily, as a test, I’m stuck with trying to figure out which ones sound best/do the least damage, within my budget.

@fuzztone     A fuse is NOT a 'power supply'.
If you are in doubt on this, try powering your kettle with a fuse.

I wonder how many folks who post here on A'gon also post negative reviews on restaurants they have never eaten at?

Frank

Does TG give a trial period?

Yes, 30-day money back.

" The audio signal doesn’t go through the fuse you dum dums"

If you had the slightest clue how an amplifier works, you’d know signal that goes to the speakers consists SOLELY of the electricity that comes from the mains, and by implication, goes through the fuse.

Dum dums such as yourself shouldn’t refer to others as "dum dums".

$400+ for two fuses for my mono block amps is a bridge too far.
I will give the light blue a shot. Does TG give a trial period?
Hard to imagine what the $1400 ones do!

mgik,

Can’t help you with that comparison, but I think that Tweek Geek’s generous policy would allow for ordering both, and returning one?

I am convinced enough to get the light blue but does anyone have experience comparing them to the yellow?

nonoise.....don't bother, they're here.... ;)

willgolf,

As I said above, the light blue QSA in my amp easily beat the SR orange it replaced. It looks like t_ramey had the same experience in his DAC, as well:

“My QSA light blue arrived early. It’s replacing an SR Orange in my Lampizator Atlantic DAC and the QSA is easily better. At half the cost of the Orange it’s better in every way. More naturally detailed and musical.”

I don’t have any experience with either AC receptacle, or know of anyone who does.

Before I swap out all of my SR orange Fuses and Duplex boxes, I would love to hear more feedback from members who have tried both.  Also, after looking at the website, I do see that the fuses show which direction they should go so that is good.  

Current, it changes direction 60 x a second) so it’s impossible to put the fuse in the wrong way!


Never tried boutique fuses, or different directions on any cable or fuse, but doesn’t the electromagnetic wave travel from source to load?

Al-Bīrūnī had little time for professional astrologers. In his treatise on astrological transits, he described al-Hasan ibn ‘Alī ibn ‘Abdūs as, “a non-studious listener,” noting that, “this is the case with most of the class of the astrologers; they bubble proudly about things they barely hear, without verifying them, and they are satisfied by associating fancies with them.”

In the spirit of Al-Birini, the great 11th century scientist, who stressed the value of direct observation, I have decided to buy one of these $71 fuses and experience their effects first hand.

About five years ago, I tried a HiFi Tuning fuse. That one had, without question, an audible effect on the performance of my phono pre amp. Unfortunately, it was an unpleasant effect, making the music sound overly bright and sharp. Hopefully this blue fuse will be better.

I tried to go order another light blue from Tweek Geek and the site shows all fuses are now made to order. Must have sold out already. Sent Mike an email yesterday but haven’t heard back yet, he must be swamped.

I keep thinking of the dwarves in their dark shed, in C.S. Lewis' The Last Battle.

I just looked at them and put them in the way I thought they should go. Maybe I was lucky that I did not put them in the wrong way.

You can’t, the mains is AC (Alternating Current, it changes direction 60 x a second) so it’s impossible to put the fuse in the wrong way!
Would be a different story if it were in the DC side of things inside the amp, then if it did sound different one way, it would be acting like a diode. And that would be a nasty thing for a fuse to do anyway. IT"S ALL SNAKE OIL!

Cheers George

Are the QSA fuses directional?  SR fuses supposedly are...it is interesting that when I put the SR orange in I just looked at them and put them in the way I thought they should go.  Maybe I was lucky that I did not put them in the wrong way.  I had 6 fuses to put in.

Send in the clowns.....

jasonbourne52

Imagination is a wonderful thing! 

So is "electronic knowledge gullibility and ignorance", it will also make them susceptible to this AC fuse "snake oil" voodoo, to spend $71 for a 10cent fuse

Cheers George

jasonbourne52
Imagination is a wonderful thing!

So will "electronic knowledge" gullibility and stupidity, make them susceptible to this AC fuse snake oil **** ****

Cheers George

From Tweek Geek's site regarding the fuses:

• "We want you to try these fuses, and keep trying them. We are convinced that you will hear the value that these devices offer. So it is with this in mind that we are offering our 90-Day Trade-Up Program: If you try a QSA fuse, and within 90-days wish to upgrade, we will give you full credit for the fuse you purchased towards the fuse upgrade as long as you have the original fuses' box, and the fuse itself is in excellent condition."

• "Accidents: If you cause the fuse to accidentally blow during the warranty period, we will replace it one time."

• "If you try one of these fuses and don't think it is worth the investment, simply return it in its original packaging and condition, and we will refund you the purchase price. You have our word."

Not too shabby, eh?

Frank

@millercarbon said:



"It is all the same story, just nobody wants to believe it. Study all my posts, figure it out. Bonus, if you do study them all you will instantly become the second most well-informed person here. Even so, I cannot guarantee you will be able to figure it out. But take my word for it, the info is all there."



Word.

Ordered a yellow for my EAR 868 preamp. 
My first "designer" fuse.
I've used other tweaks discussed here with great success. 
Will report back with results

I am also happy to have an alternative to SR. The fact that it is quite a bit less expensive is a bonus. I would love to hear what the upper end QSA fuses can do in my system, but it’s not very likely, any time soon…unless some generous benefactor lets me borrow one😉

Meanwhile, I am loving what the the last light blue in my amp brings. The increase in realism on vocals is especially noticeable.