iD4+ provides two balanced hardware inserts on analogue Inputs 1 and 2. Each insert uses separate balanced TRS jack sockets for Send and Return.
Each insert has a separate Send and Return connection. The Send carries the post-preamp signal to external equipment, while the Return feeds the processed signal back into the channel ahead of the converters.
To make use of these hardware inserts, connect a microphone using an XLR cable to either MIC 1 or MIC 2. Then use the SND & RET TRS connectors to connect your external audio processor, using the diagram below (the same routing can be followed for both microphone inputs):
Once the above steps are complete, the signal will automatically be sent to your external audio processor, and the signal will return to the same input channel.
Note: if your external audio processor has an output gain function, this can be used to control the returning signal to your iD4+.