Is it analog or is it digital?

It's unfortunate that class D amps are called class D since in audio D often stands for digital and the description of how a class D amp works(square waves) sort of sounds digital. Plus class D involves encoding albeit an analog encoding not a digital one.

It's sort of interesting why class D(actually pulse width encoding - variable width square waves of equal height) is class D. And it's stupidly simple. It's the 4th amplifier format defined. The 1st was class A(again not because it's best, just because A comes first in the alphabet). Then class B. Then class C(intermitant amplification and not high fidelity therefore). And the 4th format is class D. In all cases A, B, C, and D stand for nothing; they are just letters.

Thanks @glennewdick  & @mulveling. 

That is exactly what I wanted to know that "Class D amps are NOT digital".

The amps in the speakers are amps treat them as amps not digital devices with low power requirments. Amps (x2 i’m assuming) will have a much larger power draw then any digital device. Remeber a Class D amp is not digital......

This is correct. Not only that, class D amps could have even greater "instantaneous power/current" demands than class AB amps. It needs to be on a high current outlet intended for amps -OR- plug them right into the wall. The low-level noise filtering hardly matters.

The amps in the speakers are amps treat them as amps not digital devices with low power requirments. Amps (x2 i’m assuming) will have a much larger power draw then any digital device. Remeber a Class D amp is not digital......

Shunyata, would be the best to ask what is best for their products. I don't think ZU will tell you anything usefull in this regard other then maybe plug them into the wall.

Good question. I have often wondered the same when plugging my DAC into my Furman, is it analog or digital? 

Give Zu a call.  Very responsive & helpful.

1-  801- 452 - 5578

They like chatting with their customers.

Rich