CD1000
CD1250
CD1500

CD meaning Class-D amplification.

Axiom CD1500 ultra efficient power amplifier.

or since one of its important talking points can be its high efficiency somehow getting an abbreviation in the model number as well.

CD1000UE
CD1250UE
CD1500UE

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne