I was a big skeptic till i tried a set of SR blue. I was scratching my head even more when the sound slightly changed when reversing direction. Its subtle but one direction is more detailed and fluid. Subtle effect, but its there. I was not alone, and few other friends could put their finger on differences. Honestly I didn't want the fuses to work so I would return them after satisfying my curiosity!! something about the whole vibe of SR screams snake oil lol. But they did things that i liked. More depth, more definition, enhanced separation, things felt quieter. Subtle but noticeable changes. Like changing cables kind of difference, not components change. Then after a while I upgraded all fuses to Orange. It felt like a more mature sound, things got even more fluid and relaxed without losing dynamics/speed. Vocals become more defined and sweeter. At that point I decided to get HFTs and FEQ X4 which i did got HFTs a month a go and FEQ just yesterday. mind blown right now, But would talk about that in its thread!
To be clear, not everything from SR is perfect. apparently not from first hand experience. In a friend's house, he has some SR expensive ethernet cable, forgot the model but it has that tuning thing to tweak the sound. We swapped vs my AQ diamond which i believe is one of the best ethernet cables on the planet, the SR sounded literally muffled, mushy and lifeless. That occasion was probably the biggest change i ever heard from swapping an ethernet cable. So yeah i don't think SR is a perfect company and until i try another cable of theirs, my idea about then is they are inferior. But i highly recommend their fuses to a friend. Same for HFT and FEQ!