Power cable

10 awg copper.

Try Zavfino Majestic PC. Outstanding build quality and high performance for the money. 

one of: 

CARDAS CLEAR BEYOND, ( pre-owned)

CARDAS CLEAR ( new or pre-owned)  , or

CARDAS  CKEAR REFLECTION  

….. as gold / silver/ bronze 

This is an educated guess. I would recommend  borrowing an Audio Quest Thunder high current / variable. It is more expensive than I would normally recommend. But, I have been so surprised at the performance of the Storm class Audio Quest power cords, I bet, while the first level storm is around $1K… it would be worth trying. I suspect the result would be startling. Only go through with the purchase if it is clearly worth it to you.

Typically I would recommend a DHLabs cord for your device, or trying an inexpensive Cardas.

Totally depends on what sound characteristics or improvements you’re looking for.