Power cord choice?

I’ve tried many power cables from $ to $$$$. It is not only system dependent but also dependent on which component it’s used on. Therefore be sure you can try or preferably compare several at same time before final sale. Interesting effect I’ve come across is ‘ground path’ plays big role with power cables check out stealth brand cables to learn about/understand it although they are out of price range. A dark or bright cable could be exposing noise in your system to investigate. I found Greatest power related benefit using equitech balanced power standalone unit. Undid my 4 separate dedicated lines in favor of balanced unit. If you go that route wait on cable purchase because it changes things. Btw Subs and computer/hardrives are big noise producer on ac lines to other components. Obtained huge benefit with furutech top line connectors opposed to same cable without them.  On lower price end try vh audio airlsine great for price and for very basic budget but good quality try signal cable brand in ny. Upgrade a/c outlet in wall porter port ac outlet inexpensive furutech also good but more expensive option. My preferred order to proceed
1 wall outlet
2 balanced power
3 cables - biggest improvement preamp then  music server then dac 
Hopefully saved you some time and $$
Happy Listening

Power cords often cross other cables.  The radiated noise can affect the audio in those cables.  Look for a shielded power cord from Mouser or Digikey.  Don’t get the biggest cable as large gauge wire is cumbersome.  16 gauge is normally sufficient.