My QSA light blue arrived early. It’s replacing an SR Orange in my Lampizator Atlantic DAC and the QSA is easily better. At half the cost of the Orange it’s better in every way. More naturally detailed and musical.
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.
Showing 23 responses by t_ramey
The yellow I ordered for my Audio Note el84 amp came when the light blue did. I didn’t install it initially so I could get a handle on the light blue and what it was doing with my dac. I have a AM beeswax premium fuse in the el84 amp and the yellow didn’t have as big of a jump as the light blue did on the SR Orange but still thought it was a nice improvement. Both the SR Orange and AM beeswax had Total Contact enhancer on them and after applying it to both the light blue and yellow they’re definitely an upgrade over the previous fuses. I have another yellow coming for a class d amp so the tube amp can rest during this heat wave in the southwest, or as we call it in AZ....summer. |
Frank, I’ve had a yellow in my amp that replaced an SR Orange for over a week now and it’s tremendously better than the Orange. From the light blue in my dac and the yellow in the amp they definitely have a house sound but you just get more of it with the yellow. The light blue is great and it also replaced an Orange in the dac but if you can swing the yellow I say get it. Big beautiful soundstage that is naturally detailed and the musicality is just sucking me in. QSA attaches something to the outside of the fuse kinda like what SR does with theirs and I’ve noticed as you move up the color wheel on QSA that material they attach gets bigger. Not sure what it is but it must be what’s affecting the performance, or at least part of it. |
@tsushima1 As far as I know Tweek Geek is the only dealer at this time. https://www.tweekgeek.com/qsa-quantum-science-audio/ |
To the “technical” members that are interested. We stand behind the QSA fuses with this same 30-day guarantee. If you try one of these fuses and don't think it is worth the investment, simply return it in it's original packaging and condition, and we will refund you the purchase price. It’s hard to be gullible these days with 30 day money back guarantees. Unless your’e the Light”is on but nobody’s home”Speed Attenuator guy... |
It’s possible the higher up you go the longer the break in. Mike at Tweek Geek said his Red receptacle took quite a while to get to where it finally settled so maybe the idea is that the higher up colors have more of the "treatment" and need more time. Just speculating. Anybody order the new magic stones? I’m going to try the red, figured what the hell it should be fun. https://www.tweekgeek.com/qsa-stones-set-of-two/ |
My red stones arrived Monday and I'm still experimenting with placement. They certainly have an effect on power cables but I'm not sure if I like it yet. So far sitting on power supplies seems to sound best. I'm tempted to order the blue and clear but I have a purple and yellow fuse coming so I will wait and see how things change. |
I only have the red stones at the moment and I agree the PRAT is great and infectious. My wife wants to dance when she hears the music which in turn gets me out of my seat. I have several amps I like to rotate in and out of the system from tube to solid state and since the red stones have been placed at my breaker panel I notice each amp sounds really good. To the point of I feel like "this is as good as it gets" kinda good, until the next amp gets put in... My third yellow and first purple fuses arrive today. I'm going to try and start with my dac as it has a light blue already and switch it out for the yellow, then the purple after several days. |
I’m less than 24hrs on my yellow fuse for my dac and it’s already just fantastic. You get more of everything that you get with the blue. Not one thing is accentuated, just overall ease and flow of the music. Vocals, strings, you name it just sound more real and engaging. I’m trying to hold off on putting the purple in until tomorrow... |
I’ve had the purple fuse in my dac for almost 48 hrs now and the improvement over the yellow is quite noticeable and welcomed. With each step from the blue to yellow and now the purple (light violet) the amount of musicality keeps increasing and I sit for quite a while being sucked in and engaged to the beautiful presentation these fuses seem to allow to take place. Songs that I’m familiar with are taking on a new personality so to speak. I don’t know if it’s more information that’s being allowed to come through or just the lack of noise and grunge that is somehow getting purged by whatever treatment QSA is putting on these fuses. Whatever it is it’s producing the most enjoyable sound I can ever remember hearing and I’m already wanting to see how can I get a Red fuse. One particular song starts out with an acoustic guitar getting plucked and after installing each color the sound not only gets more detailed and vivid but after the purple I could almost see the instrument and it’s size. These fuses are very different from the SR’s and AM’s I’ve had before. They impart such a natural and enticing sound that it really does feel like a huge amp or speaker upgrade. After hearing the yellow it’s hard to go back to the blue and now after hearing the purple it’s hard to switch back to the yellow. If all I ever heard was yellow across my components I’d be very happy but the purple is making me wonder what’s possible with the red fuse and more of the stones that tommylion has accumulated. Mike at Tweek Geek told me he thinks the jump from purple to red is more stunning than from yellow to purple, I’d like to find that out for myself... |