PureOS on Pinephone

[nas]

I installed alsa-utils to test recording from the mic but the below command results in a silent wav file. Audio works fine on telephone calls so I guess I need to configure the input device? Tried alsamixer but no joy - any ideas where I'm going wrong?

Code:

arecord -d 10 test.wav

Edit: I booted up mobian and the above works fine. I guess the default sound capture device is either incorrect or not set.