This camera appears to have only 3 mics, not the four of the Action 2.  Is the audio configurable like on the Action 2 (front, rear, all, mono, stereo)?  Does it accept USB mics and headphones like the Action 2?  The Pocket 2 and the Action 2 are both great audio recording devices that also do video - I hope the Action 3 hasn't lost too much in that department!

It does accept external USB C Mic’s. Sound seems ok indoors it might be acceptable but you may need external for outside.

The early reviews all either ignored or glossed over external mic connections. It is not a show stopper, but I want to know if I will still be able to connect a mic with a standard microphone jack.

Gollan Posted at 9-14 06:37
The early reviews all either ignored or glossed over external mic connections. It is not a show stopper, but I want to know if I will still be able to connect a mic with a standard microphone jack.

If it's the same as the Action 2 you will need a suitable adapter to connect an analog mic to the Action 3.  There are several videos on YouTube describing what works and what doesn't.

Hello there. Thank you for reaching out and for giving out these information. Users can connect the new DJI Osmo Action 3 to the DJI Mic by connecting the receiver of DJI Mic to the DJI Osmo Action 3 USB-C port using a Type-C phone adapter and link the receiver and transmitter of DJI Mic. Thank you.

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And where is he now, scared away?

can not put an Pocket one or two DJI adapter on  and DJI should have a list of mics that work or  simply do what you're doing ask. I gave up on asking