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
Tightening the fuse holder? Now I've heard it all. Does georgie think if you turn your gear upside down, the fuses will fall out? 

I've removed mine about a dozen times and it takes effort to do so. No loss of clamping force and it's not easy to rotate them while in place.

Maybe he's used as cheap a version of a fuse holder he could find in his designs but the major players don't. 

All the best,
Nonoise
T.Ramey 
When you get your Violet fuse, can you report back how it compares to the yellow?

Much appreciated 
I took your advice and changed out all of my SR Orange fuses for fifty-cent Bussman fuses. The clarity went away.

yeah sure ya did🤦‍♂️
"Tightening the fuse holder? Now I've heard it all."

On the bright side nonoise... At least George isn't carrying on about changing fuses as being a "safety hazard" anymore. Now he is even advocating we use tools! Progress...


Does georgie think if you turn your gear upside down, the fuses will fall out?

Every time you decide to have a go at me personally, you'll get this. That may make a non technical gullible potential $$$$$ fuse purchaser, think twice about purchasing after reading it I hope.


. 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.
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