Put this on a N3DS and audio does not work at all. It's like it's muted. I have my N3DS at max volume, mute is turned off in retroarch settings, all of that. What do I do?!
Have you dumped the dspfirm.cdc file yet?
Here's a DSP dumper if you need one: https://gbatemp.net/threads/dsp1-a-new-dsp-dumper-cia-for-better-stability.469461/