Jorma Unity cable?

Yes, they have the same characteristics as the signal cables. I do not understand how that is possible, because there is no music flowing through.

The Prime does everything better (more timbres, wider open, more relaxed). It is just what you get used to. It has the same feeling of changing your car (premium brand) with 2,5l (Unity) engine to a higher model with 4,5l (Prime) engine. Once you go back you notice the limitations of the 2,5l but after a while you get used to it again and everything is fine as well. The Origo has 3l.
Important is that they are all very well balanced.

Yes, I do.
The Unity has some magic as well.
I have the Prime, but could easily live with Unity (very open sound, lots of timbres and grain free)
With Jorma I find hard to listen technically.

The Valhalla is a bit on the lean side and sounds artificial in mids and highs. I think in general Nordost is more for systems which need some compensation, but in the end it is not the right way. Try by yourself and you will hear it in a few seconds.