What are the AD/DA converters inside Quad Cortex ? why no AES/EBU output?

Hello, asking here since i couldn’t find the info just no where else:

i’ve heard it can do +48v phantom for mics; so you can use it as some sort of pre-amp to record acoustic guitar (and human voice, also why not?)

Then this question comes up to the mind:

What are the AD/DA converters that you guys have put inside the Quad Cortex ?

and are they of the same level or any comparable to the quality of AD/DA converters that are in audio interfaces such as RME, Apogee, PrismAudio, Antelope, Universal Audio Apollo etc ?

and why you couldn’t fit an AES/EBU output?

i’m really curious to hear about this before making the step.

thanks