What interconnects work best with Audio Research?

AQ King Cobras are warm, full sounding, and have nice detail. Also fairly cheap (around $140 used for 1m pr XLR). They are a big step up over the other non-dbs cables in the AQ line. I wish I had started with them instead of "climbing the ladder".

I have owned ARC amps, pre's, players and dacs, and have been loyal to the brand for near 30 years.
I have tried many cables, including ARC's orginals to the many types of Toshiba, Van den Hul, Cardas, Kimber,Nordost and have settled on JPS Aluminata for interconnects, JPS Aluminata for the amp & phono power cords and Nordost Brahma for pre, and c.d. power cords.
The cables which JPS produce seem to that special synergism with tubes amplification.

I like Harmonic TEchnology and MIT with my ARC piece.

My neighbor uses Cardas in his AR system. Neutral Reference, Golden Reference are the main ones but also has Golden Presence, Golden Cross. Sweet sounding system.

Buy a used pair of Cardas Golden Cross. They worked well with my Audio Research preamp. They will provide good soundstage and detail are somewhat cooler than the Cardas Cross which I think you would find to be too warm.