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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
t_ramey
641 posts
 
I only have the red stones at the moment and I agree the PRAT is great and infectious. My wife wants to dance when she hears the music which in turn gets me out of my seat. 

I have several amps I like to rotate in and out of the system from tube to solid state and since the red stones have been placed at my breaker panel I notice each amp sounds really good. To the point of I feel like "this is as good as it gets" kinda good, until the next amp gets put in...

My third yellow and first purple fuses arrive today. I'm going to try and start with my dac as it has a light blue already and switch it out for the yellow, then the purple after several days.
oregonpapa's avatar
oregonpapa
4,867 posts
 
The Yellow fuse arrived today and I placed it into the ARC REF-3 line stage. In my opinion, it is one of the best tweaks on the market and well worth the money by far. Everything improved over a three-hour listening session from top to bottom. The three-dimensional presentation placing the performers on the stage is really quite remarkable. The human voice is much improved. Mel Torme’ was in the room. I don’t know how much more noise is left to be removed from the system, but evidently, there’s plenty more.

Frank
georgehifi's avatar
georgehifi
10,312 posts
 


This is "snake oil" to the max, to those thinking about being sucked into this voodoo. Just read this, it's all you have to do to keep an ac fuse in good order.

To those "non technical" members that are interested, do not listen to fusers, listen to the techs of this industry that design the audio products you have.
AND YOU WON"T SEE THEM ON THREADS LIKE THIS AGREEING WITH THESE FUSERS
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

 
tommylion OP
874 posts
 
Frank,

Glad you're liking the yellow. I'll probably upgrade to them when I can. Meanwhile, the stones have done amazing things in my system. I’m thinking there may be a “synergy” going on with them and the fuses, possibly with PPT products as well. They certainly all play well together.
thecarpathian's avatar
thecarpathian
4,946 posts
 
Frank,
 did you go straight to yellow, or did you get a blue first?
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