Power cable for tube output cdp

I've found the Acoustic Zen El Nino to do good things with my tubed CDP, a JAS Audio Musik 1.2

More generally, does copper, gold, or silver mate well with tube equipment?

There is no evidence that rarer metals such as silver or gold provide any benefit over ordinary and much cheaper copper. Gold plated contacts do not tarnish as quickly as regular contacts so this may confer a slight advantage in humid environments or after many years. Why not save your money for a real component upgrade?

Forgot to mention some details. According to the manufacturer's site, the El Nino PC is OCC copper. It's a rather stiff cord. List price is $180, which is about 12% of my player's cost.

So many options: Blue Circle BC61, Kimber PK14, Signal Cable, DH Labs Power Plus.