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
Frank, I’ve had a yellow in my amp that replaced an SR Orange for over a week now and it’s tremendously better than the Orange. From the light blue in my dac and the yellow in the amp they definitely have a house sound but you just get more of it with the yellow.

The light blue is great and it also replaced an Orange in the dac but if you can swing the yellow I say get it. Big beautiful soundstage that is naturally detailed and the musicality is just sucking me in. QSA attaches something to the outside of the fuse kinda like what SR does with theirs and I’ve noticed as you move up the color wheel on QSA that material they attach gets bigger. Not sure what it is but it must be what’s affecting the performance, or at least part of it.
If I may enquire...Where are you intrepid explorers sourcing your QSA fuses ?