I just read in the hardware part of this forum that the RX 570 is well supported. And going by the source code on github there is support for the EMU10K1 Creative Audigy cards. I'm going to have to buy a NetBSD specific list of hardware. 😃
EDIT: I was reading over the source for some of the EMU Creative board files and found this in
src/blob/trunk/sys/dev/pci/emuxki.c
"/*
- EMU10K1 single voice driver
- o. only 1 voice playback, 1 recording
- o. only s16le 2ch 48k
- This makes it simple to control buffers and interrupts
- while satisfying playback and recording quality.
*/"
Does anyone know of any boards that are supported which support 24-bit 96000khz?