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
glory

et al., tell us about the musical information improvement. Specifically, cite passages from your fave music that demonstrates the capability from these Fuses.

Happy Listening!
One difficulty I have in describing the improvements these fuses, and certain other tweaks, make is that they’re pretty universal, not focused on a particular frequency band, quality or area.
Tlion,

Sets your whole system on a higher plane. Best way to review these fuses is with pics.

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Well I must say the one yellow fuse in my Lumin X1 does seem to provide a more detailed soundstage. But, this was not the case at least initially. I dunno, but it has improved quite a bit.
I used the 1260 contact enhancer on the fuse ends and perhaps that delayed or changed the fuse performance.

Looking forward to getting the yellows for my mono amps.

ozzy
Has anyone experienced a little harshness in the highs? I just put 2 blue QSA fuses in both my Innuos Zenith server/streamer and PrimaLuna EVO 400 integrated. I did notice more openness and greater separation and some dynamics. I listen to a lot of female vocals like Sarah Jarosz and Norah Jones and seem to get a little bit of shrill on the upper most notes. I have had them in about a week so they have maybe 15 hours on them.