12-13-2018 08:25 AM - edited 12-13-2018 08:26 AM
We have not tried this setup yet.
You may try connecting a jack splitter cable to the mic adapter.
Let us know how it works out.
01-12-2019 01:32 PM
Haven't personally tried connecting 2 mics on GoPro.
Please try to check the suggestion above if that will work.
Please let us know.