Hi guys, I had the same problem. In my arcade cab I had an audio lead from the AUX jack into a soundbar - volume level was extremely low. I solved this by purchasing a cheap HDMI audio extractor and set the sound output to HDMI - solved!

Cheers. Can I unmap the controller in the Recalbox menu?

Sorry if this has been covered before - new to Recalbox - SNES USB controller inputs set up in Recalbox settings - run a game - Retroarch menu pops up when I press B button!? Any help warmly received.