Power Cord Order of importance

I agree with tvad but i was pretty surprised when i did some PC swaps on my server that there was improvement noted.  It was not with the most high end cord i tried with it that performed best but certain cords on the server definitely improved the digital experience. 

Dac just make sure it’s shielded. No need to spend a fortune. 

Honestly don't think it matters which one, if it is a good power cord it will make the same improvement whether on a DAC, pre-amp, amp, etc. Don't take my word for it, move them around, see what I mean. What does make a difference is if you upgrade your worst PC vs your best. Obviously if you have one that isn't very good it will be a lot easier (cheaper) to hear a big improvement than if you try and improve your best. This will be true regardless of what component it's being used with. 

Put that pre-amp on some Townshend Pods, you will be surprised!