Hi @Chimney Cakes,
Thank you for the question!
In order to Livestream via TikTok, you need to have a minimum of 1,000 followers. Unfortunately, our 3Dio Tiktok account doesn't have enough followers to test this out ourselves. However, I was able to find this post on Quora regarding a livestream using a Blue Yeti microphone, which is a stereo microphone: https://www.quora.com/Can-you-live-stream-on-TikTok-using-a-blue-Yeti-mic-If-so-how. Keep in mind, this post is specific to desktop streaming and not via a mobile device. We were unable to find an answer to your specific question regarding Tiktok livestreaming in stereo on an Android device. We've searched Tiktok's help center regarding stereo streaming and there is no information available.
There is a possibility that combining your Android device with the iRig Pro Duo may result in a stereo livestream, but we cannot confirm that ourselves. If you're unable to accomplish a stereo livestream with the iRig Pro Duo, I don't believe it is possible at this time. The iRig Pro Duo would be your best option to get the Android to capture a stereo external microphone.
I'm so sorry, I wish I was able to provide a better answer for you.
3Dio Customer Care