Using 3.5mm and XLR Microphones with iPhone 7 over Bluetooth

Turns out that iPhone can’t act as a Bluetooth A2DP “sink” (it supports only “source”) which is required for receiving audio from one of these Bluetooth audio transmitters. They can’t be used to transmit 3.5mm shotgun, lavalier or XLR microphone output to an iPhone. I ordered both HAVIT and TaoTronics (both use the CSR8670...