Power Cord for DAC

It would be really useful to see your whole system in its venue… as in post photos under your userid of your system. 
 

I would look at Transparent assuming you are happy with the tonal balance of all your components.

Top sellers are Audio Quest, Transparent, and WireWorld… and I would add Cardas if your balance is slightly analytical. 

I have a Bricasti M5, not a DAC, with their LPS built in.  I asked them about upgrading the power cord and they said the stock cord is ideal and not necessary. I did try some upgrades and did not hear any improvement in my system. Not sure if your DAC is similar.  Good luck with it all.

use anything that's OCC single Crystal like zenwave, Harmonic technology, acoustic Zen and Neotech and rectangular OCC is the best for power cords not cheap though.

My experiences has shown that D.U.C.C Wire used in a Cable from a Company such as Acrolink Leggenda can offer a influence toward the description of a Sonic Signature  you have pointed toward.  

This Cable is supplied either with Plug Connectors or without, it is offered with different configurations for the Wire and Sheathing at different pricing per metre length.

Using the method where there is not a home trial period offered, and buying it as a Cable Only, and using recommended Plug Connectors will allow for a very high quality Cable to be produced at a reasonable outlay.  

Audio Sensibility is excellent and a good value.
Zen Wave Audio also excellent.

The list goes on and on and on be it a large player or small.