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
As far as the red stones go I placed both in my breaker panel yesterday and this is by far the best place I’ve found for my system. I think I’m going to try the open ones next but I’m anticipating a yellow and purple fuse next week if they made the cut from QSA to Mike.
Immediate impression, at least as good as Orange. Slightly smoother, more liquid, yet also more dynamic and lots of subtle details coming through with a more natural sense of ease. Part of this undoubtedly is the Raven getting more hours. Whatever, and however you want to parse it out, there is just no doubt this is a damn good fuse and a bargain for under $80 with shipping. I will probably be getting at least one more, and maybe even try the next one up the line for the Herron.
don’t forget the insertion direction, everything is reversed in the mirror.😵
Actually it isn‘t George, it’s only an optical illusion. Sorry to shatter your delusion. Your amp sounds the same looking directly at it or as a reflection in a mirror. No need to.to swap fuse directionality every time you change your view. Try an A-B test someday. You‘ll be able to leave the lids on your amps permanently.

Your lid blew off ages ago.

That’s triggered a little lesson in "snake oil" therapy, for those that are not sure yet about "fuser voodoo".
.

To those "non technical" members that are interested, do not listen to fusers, listen to the techs of this industry that design your audio products.
AND YOU WON"T SEE THEM ON THREADS LIKE THIS AGREEING WITH THESE FUSERS YOU CAN BET ON IT
Just clean and tighten your fuse holder and re-new your fuse (if old) with a good quality 50cent Bussman, Littlefuse or similar.
As with "many switch-on surges" they do deteriorate, bend, stretch and get crusty with electrolysis formations on their fusible wire elements before they give out, as these pics show of a fuse wire element ageing over time show. https://ibb.co/9NbTwqK
(even the $$$ boutique ones will age just as much also)

Cheers George
No need for personal insults George, just trying to clear up some misinformation. You brought up the issue of fuse directionality. I hope all yours are now all aligned correctly and you are freed from the the mirror misconception theory you harbour.and promulgate.

Good luck with the OCD. Therapy can be extremely arduous in advanced cases. Since your multiple responses across multiple threads involving fuses are virtually identical, to save time may I suggest you set up a macro to save you the laborious process of re-typing them ad infinitum.

Hope this helps.