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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
oregonpapa's avatar
oregonpapa
4,867 posts
 
Tommylion ...

Where did you place the stones? Do you have any of the other stones offered by Tweek Geek? If so, did you hear the differences between the stones? Thanks ...

Frank
t_ramey
632 posts
 
Tommy-
‘Are all the stones on your power conditioner?  The reds in my breaker panel seem to be the best spot for me. The 3D effect and realism is darn good for $86. Wondering if adding the blues and clears next to the reds will create a greater effect than spreading them around the system.
tommylion OP
874 posts
 
I have two of each (red, blue, clear), all on top of my CPT Equi=Core 300. I had the reds there for a few days, and added the blue & clear earlier today. I was really liking what the reds were doing, but with all three it seriously sounds like I have a new system. Improvements across the board, and not subtle at all.

I had listened to the reds for a few days, and they improved the upper bass and lower mids just like what it says on the Tweek Geek site. I then added the blues, and, sure enough, the upper mids and lower treble improved. I was going to wait a while to put in the clears, to get a handle on the reds and blues together, but I got impatient and threw on the clears. After they settled in a little bit, the highs got better and it all just came together wonderfully.
middlemass
921 posts
 
Would be interesting to hear how the stones compare to SR Devices...ECT, GCT, etc. Taking the cost difference completely out of the equation, which product is straight up better?
wig's avatar
wig
1,271 posts
 
Replaced my Audio Horizon fuse in my tube amp with a QSA light blue fuse and I immediately noticed the difference in clarity.

All of my components are now outfitted with QSA fuses!

Wig
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