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
Competition, allowed by the free market is a fantastic thing. Let's see who goes back to the drawing board. :-)
Absolutely!
A win/win every time.
Like I said before, 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!

Yes, but doesn't the electromagnetic wave travel in one direction from source to load?
As far as the duplexes, I believe there is a review forthcoming from Clement Perry at stereotimes. I suspect it will be of the higher end ones, though. Might not be real helpful if you are looking at the lower end ones.

Obviously he is selling them, but Michael at Tweek Geek seems to be a straight up kind of guy, who is not just in it for the money. I think he could be helpful in getting an idea of what to expect from the duplexes.


Never tried boutique fuses, or different directions on any cable or fuse

Don’t even entertain the thought, it’s a snake oil con, aimed at the electronically gullible

They have to be akin to a diode to be directional, but it’s a piece of wire.
Same goes for cable, and if they do act like a diode then that’s bad news.

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 and get crusty as these pics show of a fuse ageing over time. https://ibb.co/9NbTwqK (and even the $$$ boutique ones will also)

Cheers George
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