Selection of mixer device

I had a problem with my iMic because the HW mixer was associated to the Bass control, so I logged in via SSH and with “alsamixer” I checked which controls were available. I saw “PCM” so I changed mpd.conf with

mixer_control “PCM”

and now it works.
I suggest placing such control in the Playback preferences, since not everyone would be able to do the same and you cannot guarantee that the first mixer device picked up by ALSA will be the volume.

Hi, thanks for your post. I setup a BBB with a Griffin iMic this morning and noticed Volumio was doing exactly the same thing. Your suggestion fixed the issue for me.