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

I wanted to start a new thread about the more affordable versions of these fuses. I don’t doubt that the higher end versions are amazing, but most of us aren’t very likely to be able to hear them for ourselves. Fortunately, pretty much anyone who is serious about building a musically enjoyable and engaging system can get a good taste of what they’re all about.


I’ve had the light blue QSA fuses ($71) in my CD transport and DAC for over two weeks, now. They replaced SR blue fuses, at around twice the price, and easily bettered them. I am expecting one more light blue tomorrow, to replace an SR orange in my amp. I’ll give an update on that, once I get it installed and listen.


Meanwhile, here are a couple quotes from my posts on the other thread:


“What I am hearing is; voices & instruments are more solid and lifelike, with increased natural detail and sense of space, better dynamics, and a more relaxed overall sound.”


“Just got in a second light blue fuse for my DAC. So far, more of the same improvements I got in my CD transport. Very nice!😃 One thing I appreciate is the break in seems to be pretty quick, without any of the nasties you get with some other stuff. Pop it in, and you’ll hear improvements in short order, at least that’s been my experience.”


I am continuing to greatly enjoy what these fuses bring to my system, and am really looking forward to getting the last one in my amp.


tommylion
georgehifi's avatar
georgehifi
10,312 posts
 


I don’t know what improvement they bring, but the name is a real turn off

It’s all a money making grab from the gullible that have no technical knowledge, by those that feed on their gullibility like leaches. Like a few other audio "snake oil" products

Like: These $20 little black dots you stick on the end of a fuse.
https://ibb.co/LpDpf3f
And: Quantum Dots (that had it’s thread removed)
https://forum.audiogon.com/discussions/toxic-thread-removal?highlight=quantum%2Bdots

To those "non technical" members that are interested.
Just clean and tighten your fuse holder and re-new your fuse (if old) with a good quality 50cent Bussman, Littlefuse or similar.
As with "many switch-on surges" they do deteriorate, bend, stretch and get crusty with electrolysis formations on their fusible wire elements before they give out, as these pics show of a fuse wire element ageing over time show. https://ibb.co/9NbTwqK
(even the $$$ boutique ones will age just as much also)
Cheers George

davkobza
78 posts
 
You can’t teach an old dog new tricks. Feelin the old dog presence in this thread. 
oregonpapa's avatar
oregonpapa
4,867 posts
 
As an "old dog" myself, who has learned a ton of "new tricks" over the past few years, it would be a pleasure for any of the naysayers to hear my system, and then with a straight face tell me that these so-called "snake oil" items don't work.

Frank
t_ramey
632 posts
 
To the “technical” members that are interested.

We stand behind the QSA fuses with this same 30-day guarantee. If you try one of these fuses and don't think it is worth the investment, simply return it in it's original packaging and condition, and we will refund you the purchase price.

It’s hard to be gullible these days with 30 day money back guarantees. Unless your’e the Light”is on but nobody’s home”Speed Attenuator guy...
Post removed 
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