@luna,
In addition to regulated power supply, the CD players and DAC’s are low powered components so they don’t need heavy gauge PC’s.
If your goal is to seek after market PC for your digital components, I would suggest atleast a 14 gauge wire. There are quite a few manufacturers now makes power cords designed for digital components.
Audience makes ‘LP’ and ‘MP’ versions of PC that is suitable for components rated up to 150W.
I have used the MP version in the past and currently using Verastarr Grand Illusion Signature II PC’s for all of my digital components.
If you’re interested in DIY cables, I also recommend Furutech’s FP-TCS21 or FP-S022N 14gauge Power Cables.