I need advice for power cords

Johnny Rutan believes the source should get the best cable first.
So, my DAC got an AQ Thunder power cord.
He was right, as usual.
Bob

In my experience the cable design will predict where placement is best.  Some is the source, others are the amp.  One improvement for me was Torus Power isolation transformer.  Modern power have a high degree of pollution from electronics even when you run dedicated lines.  This was my personal issue.  

Buying cable used is a great value.  I like Allnic ZL, Audience, Zen Wave.

I prefer Copper over Silver.  But this is entirely subjective.

I am focusing on playing vinyl mostly, streaming when I'm to lazy to put on an lp.  So I will look for the best cable I can find for my phonostage, the the line stage and probably not worry about the dac or subwoofer amp.  SR will be at the top of my list.  I don't own right now, ex got the house,  but will be buying in a year maybe sooner.  Then I will look into dedicated lines. 

Just a possibility, I have about 6 different power cords from several manufacturers--WyWires Juice II (3 total), TRL Silver, TRL Copper, and Amadi Phil Harmonic.  These all came from a second system or have been recently replaced with much more expensive PCs.  The TRL's are very potent on amps, the WyWires were once their best PCs and are good on all components.  The Amadi's are very clear and smooth and good on source components.  All listed at $350-400 when they were bought.  You could cover all 4 components and most likely have a nice upgrade depending on what you were using.  All are considerable upgrades from a stock cable.   Look them up online.  The TRL's were big were their equipment--notably the DUDE, which I own--both are very dynamic with outstanding bass.  I will be selling them on a couple of the sites very soon.  Just sold 3 items within 3 days of the ad appearing.

Bob