Adding an external microphone to an iPad lightning port
But we recommend using a digital microphone. IK Multimedia sells a few, such as the:
IK Multimedia iRig Mic HD 2 (or the IK Multimedia iRig Mic Studio):
To plug this into an iPad with a lightning connector AND also keep the iPad charged, you need to buy these cables and connectors:
1. Connect the "Lightning to USB 3 Camera Adapter" to the Lightning port on the iPad
https://www.apple.com/shop/product/MK0W2AM/A/lightning-to-usb-3-camera-adapter
2. Then connect the "USB-C to Lightning Cable - 2m" (or 1m) to the Lightning port on the adapter in #1.
2. Then connect the "USB-C to Lightning Cable - 2m" (or 1m) to the Lightning port on the adapter in #1.
Note: Avoid non-Apple branded cables, we have found that they usually don't deliver the Fast Charge needed.
3. Plug the other end of the cable in #2 to "29W USB‑C Power Adapter". This provides Fast Charging to keep the iPad charged even when it is also powering a Microphone (or ethernet adapter):
4. Plug a digital Microphone (or ethernet adapter) into the USB-A side of the Lightning to USB 3 Camera Adapter mentioned in #1.
NOTE: that if you are using a USB-C with a 2018 iPad, then you would NOT use these adapters. Rather you should look at a USB-C hub.