They all say they don't come with an AC power cord - and they don't sell any that I can see....
So....um, how do you power your amp?
Any normal AC power cord (IEC) will work fine, like a spare one you may have laying around from a PC you never use.
I believe that the iron-lung jellyfish is usually recommended as a good starter cord if you plan on upgrading in the future and believe in the whole 'cables make a huge difference' thing.
PS audio cables work real well