Shunyata Alpha/Delta NR Line.

P.S. Also have the Delta NR. Like it very, very much. And it's much less expensive than the Cobra Citron, which, when it came out was $995 in contrast to the Delta ($700). However!! You might - if you get the Delta NR -  order a longer length, since Shunyata's cords have shrunk in length: they started out 1.85 meters (72 inches) to 1.75 meters (68 inches). You can custom order a 2 meter pair for just slightly more money and get the full  78.7 inches. I prefer a longer cord. I'm not sure why they're shorter. Someone suggested "to compete?". I don't think so, but in any case, you might want a longer cord. I did. I found I couldn't get my amp's cord to reach to the PS Audio Power Plant (and wondered why). So, I'm opting for 2 meters. It's not that much more.

I tried Alpha NR and Sigma NR for several days. Cables are system dependent, but I decided to keep my Wireworld Silver Eclipse 7 power cords. I recently tried Audioquest's new Thunder power cord and preferred it to the Wireworld. I order Audioquest'S Hurricane, which is two levels above the Thunder. I recommend trying the Thunder in your 

Ricred:
Were the cables new when you got them or had they already been used before? 

gbmcleod,
They were well broken-in. As I've already said, "cables are system dependant and results may vary." The Thunder impressed me so much I immediately ordered Hurricanes. Unfortunately they are on backorder for a couple of weeks. 

Richard:

Thanks for the helpful information.