Jwm, Recently I replaced a Gold with a Supreme. The Gold is warmer and Supreme is more detail and higher resolution. HiFi Tuning fuse is directional. Facing the fuse holder, I prefer a right to left direction. In the other direction, the sound is lean and constricted and it's NOT subtle.
I AB against the stock fuse with familiar tracks, a constant volume and just swapping the fuses. I consistently found with the HiFi Tuning, sound was noticeably smoother and less hifi-ish.
I AB against the stock fuse with familiar tracks, a constant volume and just swapping the fuses. I consistently found with the HiFi Tuning, sound was noticeably smoother and less hifi-ish.