[Infinitas]Freedsp infinitas over MCU board

Im studying freedsp Infinitas and I have doubts.
I checked this link
https://www.diyaudio.com/community/threads/infinitas-usb-audio-class-2-freedsp-32-in-32-out.330711/

I have this doubts because I havent a lot of equipment to do this .

Subject of doubts 1- Infinitas board


Could Infinitas board be builded over an MCU board like XK-EVK-XE216 ? Can I replace with an Arduino compatible board? What is the cheapest MCU for that?

Subject of doubts 2- Analog IO


Is there any MCU board that could be able to build the analog IO expansion boards? Are there any Arduino compatible ones?What is the cheapest MCU for that?
 
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