I have an HiFiBerry DAC+ ADC Pro which is listed in pactl and selected as default input. I have a Bluetooth speaker connected and playing e.g. speaker-test -t wav -c 6; it's listed in pactl as well and configured as default sink.
Now I've connected an input via phone jack (it's the i2Audio's Phono One as advertised here) but I do not get any sound. Where do I start to investigate?
PS, there's a similar question here, so just to make sure: I do not want to "mix" anything, I want to pass input audio to some sink.