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
I am using SR oranges in my MSB V DAC and transport at the moment. What a tremendous upgrade in sound quality from the standard fuses I am trying to get some QSAs but not so easy in Europe... Really looking forward for them. Want to start with the yellows
I love it when competition drives innovation and we all benefit. Seems SR has some work to do to regain their top quality position in the growing high end fuse category.

I suspect the fuse category will continue to see innovation and that is exciting! 
Is the black worth trying or should I jump onto a blue straight away?

I want to do both my mono blocks and my pre.
@pauly 

I'm sure the black is good but since several of us have stated the blue is already way better than the SR orange I would say go for the blue.