DAC Differential Outputs

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I bought a DAC AK4490EQ not knowing it has differential outputs. I was planning on creating a class A output stage using 2SA1313 to power some HIFIMAN HD5SE, but I don't know what actually comes out of a differential output? I am aware of the recommended circuits.
 
The bare chip. I'm building my own module for a Raspberry Pi 4 B 8GB sweet, this will simply be a DAC Amp module. I want to run pure class A on the output. This was the first time I'd looked at a DAC. I didn't expect a differential output, and I'm still not entirely sure which of several types of out is this differential output?

Is it a positive and a negative swing?


Is it they swing at the same time but in opposite directions?


I hear that there are design concerns because either the positive or negative are dominant over the other, is this an issue?


The recomended circuits requires an op-amp Low Pass Filter and a differential in single-ended pre-out. I considered alternatives and they weren't very good. I would've just used a coupling transformer but well I haven't given up on using a coupling transformer, but probably not.
 
The bare chip. I'm building my own module for a Raspberry Pi 4 B 8GB sweet, this will simply be a DAC Amp module. I want to run pure class A on the output. This was the first time I'd looked at a DAC. I didn't expect a differential output, and I'm still not entirely sure which of several types of out is this differential output?

Is it a positive and a negative swing?


Is it they swing at the same time but in opposite directions?

.

It is described completely on Page 61 of the datasheet and on Page 9. They are 2.8 Vpp centered on half of the reference voltage.

AOUT (typ.@0dB) = (AOUT+) - (AOUT-) = +/-2.8Vpp * (VREFHL/R - VREFLL/R) / 5

The outputs are 180 degrees out of phase with respect to each other.
 
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