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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

Showing 9 responses by mglik

mglik
888 posts
 
So, there are light blue QSA for $71 at TweekGeek
And the upper colors for $1500+!And HiFi tuning ones for $74.
Light blue QSA or HiFi tuning or SR orange?
mglik
888 posts
 
Tommy
I don’t have “warm and fuzzy” feelings for SR so that is good.
What is the story for QSA’s crazy expensive fuses!?


mglik
888 posts
 
I am convinced enough to get the light blue but does anyone have experience comparing them to the yellow?
mglik
888 posts
 
$400+ for two fuses for my mono block amps is a bridge too far.
I will give the light blue a shot. Does TG give a trial period?
Hard to imagine what the $1400 ones do!
mglik
888 posts
 
Looks like SR is feeling the pinch... buy 2 orange, get one free.
mglik
888 posts
 
Just got my Light Blue QSA fuses.
For sure, hard to imagine noticeable improvements with something as small and innocuous as a fuse.
But Tweek Geek and users do not exaggerate!
In a word: clarity.
Voices and instruments jump off the record and demand attention.
The performance of this little thing inspires me to return the Blue and order the Yellow. I have them in my mono blocks.
I love this forum and look forward to it every day.
It led me to my destination AGD amps, my Silversmith Fidelium speaker cables and now QSA fuses.
mglik
888 posts
 
CLARITY & PRESENCE 
Light Blue after 40 hours-what music was excellent is now excellent and gripping. $71 each… about $7100 in improvements.
No question, ordering Yellow… $21,100 in improvements?!
But not available until mid August. Looks like people are catching on.
mglik
888 posts
 
@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?
mglik
888 posts
 
The SQ effect of the light blue fuses in my mono blocks is stunning!
It is different and unique from other upgrades. The overall presentation of the performance has jumped up to just be more palpable. That is, you can reach out and touch it.
But I will limit my fuse upgrade to the $211 each yellow.
#1-the light blue are already spectacular. #2-it should be “mellow yellow”.
Mike says that he expects more stones and fuses next week.
I am waiting on yellow fuses and red stones.
Since the fuses are so excellent, there must also be something to the stones. It has been said that the stones bring the Bybee V2s to the next level. Anyone have experience with the V2s and stones?
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