I connect Zoom h4n Pro to my Mac via USB as audio interface. I then record audios with QuickTime.
Because I put the h4n on my left hand, the right & left inputs don't have the exact same volumes. There is a way to set mono mix on as presented here. I do find this setting when using h4n as a recorder, whereas I don't find it when using it as audio interface. Please correct me if I'm wrong.
When I record audios with QuickTime, it seems that the software automatically mixes the left & right channels. Does anyone know how to seriously check if an audio file generated by QuickTime has exactly same volumes from left and right?