The holley dominator/ hp ecu is set up to be able to control the timing and the dwell of each coil directly. No external box/ amplifier.
Each coli will be powered by the cars charging system voltage. Call it 12 volts. Each coil has a smart circuit looking for a hi and a low signal. There are also some internal self presevering features like a clamping diode set around 18 volts if I remember correctly. This is the maximum voltage that they will handle.

A CDI ignition box sends about 400 volts to the coil, then uses the coil as an amplifier. CDI coils are much different and are not interchangeable with inductive coils. The dominator/ hp ECUs don't directly control the coil with CDI. The ecu just tells the ignition box when to fire.

CDI gives a very strong very short duration spark. Much stronger than an inductive set up. The problem is duration. You need multiple events with CDI to be sure that the mixture lights. At higher rpm, there isnt time to charge multiple times. You could get around this I guess, by putting 8 msd boxes in and having multiple sparks at much higher rpm.