AC cord for Manley Chinook...

I'd like to replace the power cord for my Manley Chinook phone preamp. Currently, I am using an older Pangea 14 SE.

I'm sure I can do better, but what are some considerations when selecting a power cord for a phono pre? In the scheme of the  AC cabling ladder, what is the level of importance with the phono pre-amplifier in the scheme of an entire system?

Andrew