Shunyata Alpha/Delta NR Line.

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 

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.