I can't seem to find the comment section in the wav-file (see file attached). The attached CONFIG file is created. I confirm all have version 1.6.0, and they were all disconnected from battery before trying. Both of them are the Dev boards.

There seems to be an issue with the on-board microphone. The audiomoth is not responding to the chime without external microphone, but does respond when the external microphone is connected. When in DEFAULT mode and on-board microphone, it is recording, but no real sound (it doesn't record my voice). When repeating this but using the external microphone, I can clearly hear myself. Not sure why this is. I tried on two new audiomoth's and both have the same issue. They were purchased in December 2021.

Thanks Alex for the response. Version was already 1.6.0, but also tried after re-updating. But the problem persists after powering down. It records in DEFAULT mode, but won't respond to the chime in CUSTOM.

Will the Aquarian H2A also work with the Audiomoth Dev?

I think I already found it in another post. Anyone interested, see: https://www.openacousticdevices.info/support/main/comment/60800bbcbb7c0c001500dc98

Hi Jake, I'm also interested in this. I have a calibrated microphone, and would like to convert wave file to Pascal. Have you found a solution yet?