Best power cord for a preamp?

In my experience, the plugs of the cord contribute to the final performance....top Furutechs are the clear winner after researching other brands

Running a Pangea AC14SE on my preamp now. It's a quality budget cable.

Try this.  I build my own cables and have had difficulty beating performance of this for just the price of materials.  Using one of these on my tube phono pre.  Super clear, great bass.