This is a known issue and it is tracked in https://github.com/eouia/MMM-AssistantMk2/issues/161#issuecomment-496287957

You can try the various solutions proposed by the developer of the module. I have the same issue and I am waiting for a fix as well.

@dxfan227 read this topic: https://forum.magicmirror.builders/topic/7035/boosting-usb-mic-or-best-mic-choice/2 depending on your project goals, the USB mic might be a good option, but if the primary use would be voice assistant, then I recommend the mic array.

@dxfan227 sensitivity of the far-field microphones …

I am interested in the same … I think that you can just solder on top of the header of the mic array … but let’s somebody confirm that.