Colour me curious about the QSA fuses.
I have long felt that fuses can contribute towards better sound quality however recent experiences with a couple of recalcitrant pieces of equipment and serial blowing brands put this investigation on the backburner for me.
Watching as the reviews and private recommendations emerge, it struck me that there was somewhat of a no man’s land for feedback on their middle tier models so I chatted with Steve at QSA and he kindly sent me a examples of most models to evaluate and report on here for others. There isn’t any commercial agenda on my part, I’m not going to be reselling this brand and all of my purchases from QSA are on regular industry terms.
As you can see in the photo below, there are 6 fuses. The top two are Silver models for my @Taiko Audio Extreme and Lampizator Baltic dac, which I bought purely on the strength of endorsements from trusted users. What might however be more interesting for others is how the less expensive models compare and where the performance / value sweet-spot might lie. Since I feel there are already quite a few comparative reports on the yellow model, Steve has sent me crystal Blue / Purple / Red / Red-Black models.
Unfortunately time is limited before I leave for a family break, so I will give the fuses each an initial first impression report over the weekend and repeat again later after each has had two days of burn in. I’ll use the Baltic dac for this test as it is very responsive to power and can be rebooted immediately, unlike the Extreme.
Later in July, I will revisit after each fuse has had some proper burn in time and attempt to comment on the notable differences whilst going in both direction, up and down, the model hierarchy.
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This comparison will be very interesting. I'm wondering why you decided on the Crystal rather than the QSA line.