I get mono-only sound output (speaker-test -c 2 is in both speakers all the time) from the Neo Core with the minishield using the provided FriendlyCore operating system: nanopi-neo-core_friendlycore-xenial_4.14.52_20180628.img. If I use Armbian I get stereo sound, so it's not a hardware problem. I would use Armbian if I could get WiringPi_NP and RPi.GPIO_NP to work.
I'm hoping this is just an ALSA tweak that needs fixed, and I can use FriendlyCore because everything else works?
I'm hoping this is just an ALSA tweak that needs fixed, and I can use FriendlyCore because everything else works?