My First DIY Power Cable

Not too likley @chocaholic 

If it sounds good, it is harder “to fix it” from there, than if it was bad with a real problem. 

BTW their is a direction on the cable, you have to look at it under a 100-1000x. You'll see how it was pushed through the extrusion dies. That is the single best thing you can do to build your cable. Get the direction right, don't touch the exposed wire with your hands/fingers and use contact enhancers before you tighten the securement screws. 

@helmholtzsoul how does the direction matter when the RCAs are carrying an AC signal?
Does it only help one side of the signal (like the +V side)?

… and use contact enhancers before you tighten the securement screws. 

Are screws better than soldering?
(Most of the high end cables are soldered or welded, which would seem to provide the most contact.)