The ID24 has a pair of insert sends and return connections for each input of the device. These can be used to either add a compressor in line with the pre-amplifier of the ID24 or alternatively bypass the pre-amplifier entirely.
To use the ID24 with an external pre-amplifier, run the output of your pre-amplifier into the return of the ID24. This will bypass the pre-amplifier stage and run straight into the ADC of the ID24. You will be unable to add any gain to as a result of the bypass.
If you wish to use an external compressor with the built-in preamplifiers of the ID24. Run your microphone into the microphone input of the ID24 and set your gain to around -12dB within the ID mixer. Once you're happy with the level, connect your external compressor input to the end of the ID24 and the output to the return.
The compressor is now connected to the pre-amplifier and will pass audio from the pre-amp to the external unit. You may now apply the necessary compression and any makeup gain you require to shape the sound to your liking.
Finally, you may wish to record a dry and wet variant of your input source. To do this, simply connect the return of the external compressor to the adjacent input channels return input. This will allow you to capture both the wet and dry signals.
If you have any further questions on how to use outboard gear with the ID24. Please contact our helpdesk where we will be happy to help.