Quick plug to my thread about using the EXT for porting pi hats: https://forum.clockworkpi.com/t/designing-a-ext-prototyping-breakout-with-raspberry-pi-hat-compatibility/
Here’s my hookup:
Just waiting on my A04! But when it arrives I’ll be posting my progress on getting this soundcard to work.
EDIT: Another pic. That PCB with the hat reduces to half-size. So those audio connectors will sit right inside the printer hatch.