Can't recommend Arctic Cables enough. I had a lot of question and was sceptical dropping 3k on a mere cable, but they absolutely answered everything in detail and recommended me the Euphoria based on my preferences. I had the Apeiron before and that was already a significant step-up, i am super satisfied with the Euphoria and it will only leave me if i sell my Unveiled.
@theveterans has basically the same opinion.
Keep in mind that cables only slightly tweak the sound, but it can absolutely make a big difference for one person to enjoy the headphone way more. The Unveiled won't beat the Immanis in terms of technical abilities just because you slap an expensive cable onto it.
The Euphoria gives it those extra dynamics, punch & slam which is missing compared to the OG Susvara. The treble gets also better. But if you don't like the Unveiled, it most likely won't change that.