Have not posted to this thread for quite a while, so here is a quick update. I have recently applied the Shunyata King Cobra CX to my Rowland 312 with excellent results. King Cobra CX appears to share the general character of graceful neutrality of the older Anaconda Helix Alpha, but is not affected by the Helix series slight propension to dampening micro and macro transients. On the contrary, KC has added authority to the system, while making micro transients more filigreed and delicious. King Cobra PC in my system appears to be very extended from top to bottom with superior harmonic exposure throughout the frequency range, and extremely high ability to retrieve ambient cues. . . which means that it is very synergistic with 312's creation of a large and very transparent tri-dimensional stage with well defined instrument images. It is perhaps the PCs I have tried this far with the most balanced ability of yielding treble information that is highly extended, structurally pertinent, and musically involving. The bass is rather deep and tuneful, but also quick and nimble. What is even more interesting is that while King Cobra has a large gage that in theory should make it ideal for high current applications only, such as a power amplifier, the wire appears to be a complete generalist: I have applied it successfully to my X-01 limited, to the GamuT CD3, and to the Furutech ETP-309 power distributor with consistently desirable results. Only the JRDG criterion preamplifier appears to be somewhat immune to any PC changes, including KC. The eventual insertion of a total of 4 King Cobras into the system has had a result that has been incrementally positive. My analysis is ongoing, but this far I have not found a single position in the system or a musical genre that is at odds with Shunyata King Cobra CX.
Please note however, that if you were looking for a wire that added treble 'sparkle' to a system, or that yield a euphonic midrange, or a slightly turgid bass. or which creates that over-emphatic fizzy PRAT. . you should look elsewhere.
KC is not even faintly etched and dry. Rather, it certainly is a powerful sounding wire, its extreme grace falls solidly on the neutral side of romantic, and I have not observed KC reinforcing any particular frequency range in my system.
At this point, the King Cobra CX appears to be extremely consistent with my own sonic and musical preferences.
One last observation, like with most power cords, KC requires a good amount of break-in to give its best. . . it seems to stabilize in approximately 300 hours of music making.