Cardas or Nordost for Simaudio/Magico

I owned 330a and heard Magico A3.
I think Nordost would be a better match with A3 than Cardas. 
I would also consider mixing and matching different brands of cables. 
 

To start with, leave the Transparent PC on the 330a for time being as well as the Tsunami. 
Start with speaker cables and interconnects. In this order. 

Also consider trying Audience FrontRow speaker cables. In my system they were betrer than Tyr 2. And I’m running Tyr 2 XLRs. 

 

Nordost. What Nordost does is it gets out of the way of the electronics, not a band-aid type of cable. With your gear I would opt for the Frey 2 which is the sweat spot for true high-end(resolving) electronics. Have the Heimdall 2 on my Esoteric A 03/C 03 and feel a slight restriction in performance. Have used JPS Super Q/Audio Magic Natural and Siltech Super New York on the Esoteric gear. The Heimdall 2 and Siltech are very close, with the Siltech having better body and texture and Nordost having speed/clarity and agility. IMO the Frey 2 should improve on the Heimdall 2 shortcomings.

@dokosan, "Cardas level would be Clear Cygnus (or maybe stretch to Clear),"

Plenty of good Nordost references here, and if you lean to Cardas, make sure you arrange a demo/return for the interconnects. Having owned and compared Cygnus, Clear, and many others in the line, the results are similar but different in some ways. With the capability of your speakers, if you do try Cardas, I’d stretch to "Clear" between these two IF "a bit more detail and improved soundstaging" is what you are truly looking for. I just notice a smoothness to standard "Clear" and "Clear Reflection"  fwiw. In your case, standard Clear might work, but demo it for sure if you can with.a proper dealer-retailer.  

I have a Moon 390 and I have listened to the 330. Ended with a Pass labs XA25. As far as interconnect I have Cardas Clear review.1 I am very happy with the organic sound and soundstage. Simaudio has used both Cardas and Nordost speaker cables at audiofest I attended. They were Clear and Vahalla as I recall . I preferred the Cardas and the rep and my retailer kind of agreed. The Moon sound is very neutral. The Nordost sound can be a little more bright than the Cardas which is a bit more rounded IMHO. The Magico speakers are already detailed and the Moon neutral. The Nordost will likely accentuate. The Cardas will likely bring a nice balance. Cardas Clear is the sweet spot . Reflection is ok. Below not sure it is worth it. Agree with @audphile1 that Audience Front Row is also worth considering. Of course all depends of your sound preference. Good luck and keep us posted.

I have the Moon 390 and 761 with SF Sonetto V speakers. I use Transparent super speaker cables and interconnects. Sounds really nice.