I would second @grannyring 's endorsement of the Duelund cables.
I started off with Tellurium Q Ultra Black II feeding my ATC SCM40s. Though some regard these cables as a touch warmer than neutral, I was finding the overall sound a little hard and bright. ATCs are not noted for being laid-back, plus my room has many reflective surfaces.
On the basis of this blog, I plumped for the Dual DCA12GA, 2 metres unterminated. I have the ends of the cable stripped and threaded through the amp's terminals plus the 3 sets of binding posts on my ATCs. This is quite a cost saving on both plugs and jumpers.
The sound is wonderful, and at 60 hours so far, is only getting better. Tbh, at first, the mid-range was a little shouty, but has now settled. I would say its strengths lie not necessarily in subduing the high-end, but in emphasising the musicality of the mid-range. When I swapped back the TQ, I did hear slightly better dynamics and detail, but overall it felt cold and analytical.
[Digression] Interestingly, I experimented with Roon's DSP recently and created EQ graphs using a UMIK microphone and REW. As far as this setup could determine, there was no material difference in the analysis of the Duelund and the TQ. Yet, to the ear, the difference is very clear. This is perhaps an anecdotal insight into the frequent battles between those who sit in the "measurement" camp and deny the subjectivity of those who claim differences, when it "can't make sense" (ethernet and USB cabling being a very obvious case).