Following Kennyb123’s Shunyata recommendations, I’ve acquired a couple Sigma v2 NR power cords to try out. These are simply awesome cords used on the K50 and Pacific. The result is much better when both are used rather than just one or the other. You can really hear into the recording with such a low noise floor. Very natural and stress free. Excellent low end and overall resolution. I really have to wonder about the omega usb. Thanks for sharing Ken.
I finally got around to swapping the power cord on my K30. A Shunyata Delta NR v2 replaced the Alpha HC yesterday. I have to admit being surprised by how much of a difference it made. "Very natural and stress free" - with nice reduction is harshness. And yes, "you can really hear into the recording" as everything is more clearly laid out in front of you. Lastly, transients are clearer and faster. While I've not tried the more expensive Shunyata power cords, the Delta is so darn good that I don't really feel a need to.