YES! You can connect "some" microphones to the DJI Action 2...but...they have to support digital audio. At this time, the only microphone that I know of that will work with the Action 2 is the R0DE Wireless GO II, and all you need is a standard USB-C to USB-C Cable!

Whaaaaaat!? THAT´s what I was hoping for! I tried every single adapter and cable to use my Goll, nothing worked! But I didn´t think that USB-C to USB-C is the solution!

You should be able to use a standard android-compatible 3.5mm to USB audio converter adapter, according to DJI developer posts here, and it should work in stereo if you connect a stereo mic.  They show that in their introductory video.

Useful information, thanks

Wonder if this only applies to the Action 2 or if a similar connection method could be used with the Pocket 2?

Not sure but I know the cynova adapter that was made for the original osmo action does not work on the action 2. Neither does the Saramonic usb-c lavalier mic made for the osmo action. Looks like I’ll be needing to invest in new external audio gear if I want to setup that way.

JodyB Posted at 10-31 16:54
Not sure but I know the cynova adapter that was made for the original osmo action does not work on the action 2. Neither does the Saramonic usb-c lavalier mic made for the osmo action. Looks like I’ll be needing to invest in new external audio gear if I want to setup that way.

Did you try the Cynova? I was going to test that today.

KerryG Posted at 11-1 05:26
Did you try the Cynova? I was going to test that today.

I tried it and it does not work.  This is expected because it is not a standard converter, and we are told that the A2 simply needs a standard android-compatible converter.  I really must try to get one quickly to put this matter to rest!

[Edit - hmmm, it's remarkably hard to actually find such a thing.  There are loads of headphone adapters, but mic adapters are rare.  About the only one I have found is "
Movo UCMA-1 Female 3.5mm TRS Microphone Adapter Cable to USB Type-C Connector"

Thanks for sharing!

KerryG Posted at 11-1 05:26
Did you try the Cynova? I was going to test that today.

Yeah, I tried it and it doesn't work. Neither does a saramonic lavalier with straight USB-C connector. But the lav was made for the Osmo Action1 so there maybe differences in the audio interface between the 1 and the 2.

Interesting I need a external mic with pass through power any info on that?

if this would work that would be cool:

Adapter USB C to 3.5mm with power pass thru

snorkel Posted at 2021-11-1 09:29
if this would work that would be cool:

Adapter USB C to 3.5mm with power pass thru

https://www.apple.com/shop/product/MU7E2AM/A/usb-c-to-35-mm-headphone-jack-adapter

Hello, I am writing from Turkey.
First of all, I will try to explain as much as I can due to poor English.

Action 2 has compatibility problems with many microphones, but after a few tries, this is how I solved the problem.

I provided a problem-free microphone output with an Apple original adapter and trrs microphone.
When I connect the iPhone 6 original earphones, both the microphone and the headphone audio output work without any problems.
Other TYP-C 3.5 adapters did not work.

Waiting on the DJI Mic - that looks great!

It would be really great if we could get an adapter for power + external microphone.  There has to be something that will eventually work, right?  I can't imagine a new camera wouldn't have the ability to accept external power and also add external audio.   

Is there any 3:rd party adapter/baseplate so I can get USB-C directly to the camera without the power/screen addon? The only ones I have found only supports USB-C charging.

MickeKling Posted at 6-8 05:33
Is there any 3:rd party adapter/baseplate so I can get USB-C directly to the camera without the power/screen addon? The only ones I have found only supports USB-C charging.

I haven't seen anything like that yet.

I have used my saramonic vmic mini with the apple 3.5 mm to usb-c adapter and it works. have to use a trs to trrs cable from the mic (trs side) to the apple adapter (trrs) though. I've got a deity d3 pro on the way and it's supposed to be able to use the usb-c port or the 3.5 mm port for audio out so I'm hoping that will work to cut down on the number of cables I need between using my actual camera, iPhone, action 2 and such plus have better audio as well, I hope anyway!!

MickeKling Posted at 6-8 05:33
Is there any 3:rd party adapter/baseplate so I can get USB-C directly to the camera without the power/screen addon? The only ones I have found only supports USB-C charging.

No, these pass through ports only support USB charging. For any further functionality you must have ether the display or power module attached since that acts as the main processor, or 'brain' of the system.

IftiBashir Posted at 6-9 08:05
No, these pass through ports only support USB charging. For any further functionality you must have ether the display or power module attached since that acts as the main processor, or 'brain' of the system.

Do you know this for a fact, or are you guessing? Ether way, if DJI manage to release a magnetic base plate with full USB, it will be a must have accessory. If you use the Action 2 (and want external audio) on a helmet the dual display/battery add-on is not an option due to the vertical construction.

MickeKling Posted at 6-29 05:57
Do you know this for a fact, or are you guessing? Ether way, if DJI manage to release a magnetic base plate with full USB, it will be a must have accessory. If you use the Action 2 (and want external audio) on a helmet the dual display/battery add-on is not an option due to the vertical construction.

The display/power module hold all the processing for data transfer - this is why you then use the connected module's USB port for external accessories. If you look at the third party accessories, all pins are present - its a complete like-for-like pass through - yet only charging works.