ok, answered my own question by grep'ng within /usr/share/man/man4, looks like azalia(4) systems. Was hoping for something usb attached but no such luck.
On Tue, 24 Jul 2018, Diana Eichert wrote:
I'm trying to connect to an audio system that only has SPDIF output. I looked at man pages but nothing obvious regarding supported audio devices with SPDIF input support. Anyone have recommendations? Or is it supported? thanks diana
