Power Cord for DAC

I'd say all you need is an Audioquest X3 power cord.

Best power cords I’ve tried on DACs is the Audience AU24se. They come up once in a while on a used market. Open and natural sound with great bass. But I can’t describe the sound of audience cables as dark. Transparent and neutral without emphasis on any particular frequency region yes but dark they’re not.

+1 on the Audience Au 24SE. I have the MP ( medium power) version and sounds great on my Bricasti M3. Replaced a Triode Wire Labs. 
Seems like the SE model is kinda of a sweet spot for value and performance   Still not cheap on the used market but offer a nice well balanced sound. Great company who supports all their legacy products, with most products having the ability to be upgraded to the newer model.
 

I’d remove Kimber from your list. Kimber makes nice PC’s for analog  but they are unshielded and will add noise to digital components. I’d look at a WyWires Platinum Juice II Digital series PC which is a shielded cable which will have a lower noise floor. Used to use Kimber and enjoyed them but moved on to WyWires and Nordost… no comparison.

Has anyone tried the acoustic zen pC