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
@wig   Thanks. Eliminating differences due to on/off, component and cable movement/disconnection/reconnection, removal/reinsertion into the fuse holder, etc. is important. 
David,

I use the 1260 Elixir from High Fidelity Cables on all of my connections externally as well as internally..a progession of sorts. 
Makes an improvement on my magnets and all other tissues that join. Wonderful and musical. No insertion loss post connection..seems to reduce warm up time as if there hardly isn't any..Will try on my speaker tinsel leads and then onto other moving electrical conductors. Tom
@ david_ten

You are spot-on! The SR had an advantage of 8+ months of use verses the first few seconds with the QSA; that's how long it took me to discern the differences...

Then the swopping began over a 3 hour period and just couldn't believe the level of clarity I was hearing. It's going to be a long haul to hit 200+ hours as my system is all tube based and typically listen 3-4 hours nightly. 😁


Thanks, @wig and @theaudiotweak 

I'll be demoing, based on feedback here and directly from @glory  and @wisper   I need to hold off until after I fully evaluate my incoming amps.
@glory 
Wow, you actually bought a red black. What are those $2444 or so?!
There must be an huge improvement.
I have 2 light blue for my mono blocks and am waiting to return them for 2 yellow. How are the yellows? Do they even compare with the red black?