What's going on with Synergistic Research fuses?


I live in California and a couple of weeks ago we had strange lightning storms that started the many fires burning in the State.  It also fried the fuse in my Pass XA30.5.  I got the amp second hand and it came with a SR Blue fuse.  I called Pass and they recommended a very cheap fuse which I ordered and installed.  Because I was curious, I took the SR sticker off the old burnt out fuse and found that it was a very cheap SIBA brand fuse underneath.  It is clear that SR is either not making the ceramic casing for this fuse or using the SIBA fuse and then doing stuff to it.  At the very worst, it's just slapping a sticker on it and charging a ton more

The thing is, I'm pretty sure I could hear a difference for the worse when I installed the cheap glass fuse post lightning storm.  Could it be that SR is modifying an existing fuse to make it sound better?  Maybe some more technically minded folks here on the forum could help me understand

thanks!
adam8179

Showing 13 responses by georgehifi

In the measurements I’ve made, they only seem to show up with equipment that actually draws enough power that you can measure a voltage drop across the fuseholder.
This is "maybe" a correct statement, but lets get the rest of it right, and may only apply to non regulated equipment.

What should be added is that it would be "impossible to hear" the difference. As the mains fluctuates much more every second, your measuring the same ***** thing, a minute voltage drop across the fuse or larger voltage drop in the mains every second!!!

It’s all fuser snake oil voodoo **, don’t try to make it anything else and give fusers even more fodder for the shilling of these >$160 fuses

Cheers George
But: is the part where WE are supposed to trust your ears
You know the old bible saying,
"If your eyes deceive you then pluck them out"
Same goes for "fusers" ears. 
If you've noticed, he'll start out advising, and then when things don't go his way, he'll instantly turn on the people he pretended to help, insulting and denigrating them. It's his MO.
You really are, a delusional fuser

Like I said @lemonhaze
  Here’s something meaningful since you asked
Do some maintenance on you equipment, clean the end caps up on your 50c fuse or re-new it if aged and looks nothing like the left hand one and starting to look like the others https://ibb.co/SQ9WJLn or https://ibb.co/HtnGV2p
And clean it’s fuse holder with proper "electronic contact cleaner" squeeze the fuse holder contacts together a bit more for added tension. And their will be the same expectation bias listening result.

Cheers George
I think the idea of these threads is to contribute in some meaningful way,

@lemonhaze, fusers have nothing meaningful to contribute, it’s all snake oil and voodoo, or at least expectation bias on first hearing from spending $>160+ on a re-badged 50c fuse, they need to hear something, even if it’s in their delusional heads.

Here’s something meaningful since you asked
Do some maintenance on you equipment, clean the end caps up on your 50c fuse or re-new it if aged and looks nothing like the left hand one and starting to look like the others https://ibb.co/SQ9WJLn or https://ibb.co/HtnGV2p
And clean it’s fuse holder with proper "electronic contact cleaner" squeeze the fuse holder contacts together a bit more for added tension. And their will be the same expectation bias listening result.

Cheers George
You really should talk to @atmasphere I know what he said
He will never tell you that these >$160 dollar fuses "sound better".  All he said there "can" be a slight voltage drop across the fuse bnecause of the fuse holder if the fuse is not seated properly. I say the mains itself fluctuates more than this voltage drop anyway.


Just "allnoise", snake oil and voodoo 

 ALL TOUCH CONTACTS GET SLIGHTLY CORRODED OVER TIME WITH DISSIMILAR METALS WITH CURRENT RUNNING THROUGH THEM
The OP asked if something was done to the fuse because it does sound different.


You’ve been told, it’s not the fuse, but the way it’s seated in the fuse holder that gives a very small voltage drop across the fuse (unlikely detectable)

To the OP adam8179
If it worries you just do a clean, up and push the fuse clamper together a bit to give it better holding tension. And use a new 10c fuse if it looks like these
Also the standard fuse could have had many turn on cycles, and become crusty, hardened and carbonized.
Left to right aging same fuse https://ibb.co/SQ9WJLn
Right to left aging same fuse https://ibb.co/S6YXQGT
And don’t be gullible and spend $160 on 10c re-badged fuses

Cheers George
Yeah. Right. Makes total sense.
so glad you finally see the forest for the trees.

bad contact with a standard fuse can account for a difference in the sound
You "fusers" did I say anything about the sound??, I think NOT!!
Like Ralph said it can be measured in an amp as a "very small" voltage drop across the fuse if it has a misaligned/dirty fuse holder, but your mains will be varying much worse than that.
And in the case of line level equipment, it’s just a non event even as it’s REGULATED!
Synergistic Orange fuse was nothing short of unbelievable.

According to Atmasphere, the fuse makes a measurable difference. But Georgehifi thinks that this is not possible.

Don’t twist what he said into something that you want to believe, bad fuse holder contacts (not the fuse) "could" cause a "very slight voltage drop".
Which will be much smaller than the "voltage drop" your fluctuating mains is doing every second anyway, and extremely doubtful you’d hear it, certainly not "was nothing short of unbelievable"

And in the case of any equipment with regulated power supplies it doesn’t even see it, that’s why it’s called "REGULATED"!!
The consensus among most all “skeptics” that I recall including George has been that a better contact between fuse and holder can make a difference.
Yes as Ralph also explained, this is correct and gullible buyers of $$$ fuses think it's the change over from this from the standard cheap fuse that's given them the difference.

Also the standard fuse could have had many turn on cycles, and become crusty, hardened and carbonized.
Left to right aging same fuse https://ibb.co/SQ9WJLn
Right to left aging same fuse https://ibb.co/S6YXQGT

Cheers George
The contacts on the end of the fuse make a difference too- which has led to the idea that fuses are directional (they aren’t). Its just that sometimes the fuse sits better in its holder if you turn it around (although by simply rotating the fuse you can get the same effect, which can be seen by a reduced voltage drop across the fuseholder).

But even this Ralph is null and void also, when the equipment has regulated supplies, as many "directional fusers" claim differences in fuse direction on their preamps and source equipment with regulated supplies.
As for them blowing for no reason, if indeed they do cryo them, this "can" make the fuse element more fragile harder/stiffer and suspect to de-rating it’s amperage and hence (blow earlier), a bit the opposite to what happens to us the older we get.
                                                 "IT"S ALL JUST SNAKE OIL"!!



Cheers George
I guess I'm just interested in what they are doing to that cheap SIBA fuse to make it sound so good?

From what I gather they "stroke it"😜, and hope it doesn't blow🤣, apparently some do because they've "maybe it said " been cryo'd and weakened, so instead of being say 2A they are now maybe 1.5A rating 

Cheers George