[Atratr]

I already own a Koma Field and a FX is coming. Can I power both with only one of the power supplies?

[Jackieflipflop]

Hello Atratr!
Do you mean if the PSU is the same for both units?
In this case yes, you can use both to power both units.
In the unlikely case you meant to use a single PSU to power 2 units (with a trickery or DIY solution), than unfortunately is not possible!