primaluna gear, avalon eidolon speakers, cardas

Avalon speakers are internally wired with cardas wire (at least the old models like ascent, radian), don't know if the still using it?

It is only copper. For example Monitor Audio Platinum is wired inside with pure silver. They use the best WBT connectors worth of 450 dollar.

It is not that special what they use.

Still using Cardas, per my Eidolon and Eidolon Diamond.
I don't believe in wires at all....well that's an overstatement, I play with wires in moderation.
Start with a baseline of Canare Starquad cheapies,
if the system doesn't sound good and you absolutely need esoteric wires with voodoo boxes of choke and caps or alien material to compensate, something's wrong.

In my experience Cardas works better with Avalon compared to MIT. Because they have those properties which an Avalon is not that good at. Avalon ( I sold it for over 6 years) has a wide an deep stage. But within this stage the individual focus of instruments and voices it not thar sharp. Cardas is very good at individual focus in instruments and voices. You get a better endresult.

Bo, I find your assessment of Eidolons unusual. Could you describe your rooms length and width, speaker distance from front wall (the wall behind the speakers), and the amount of toe in?

Your priority of wire material over actual cable design is, well…whatever, it's an interesting opinion.