Prepare the following cables (listed as pictured on the photo, top to bottom):
Input and output XLRs are connected with shielded twisted pairs, shield is soldered at the XLR side only, install Molex connector on the other side, pinout as follows (for both cables):
Input XLR cable should be 8 cm (3.1") long. Output XLR cable should be 22 cm (8.7") long.
Install and connect all boards.
Run a wire from a link between grounds to common star ground point at the chassis (most often this is earth contact at the IEC inlet).
Connect power to the 24VDC and 48VDC connectors (note: 24VDC|| and 48VDC|| a connected in parallel to the 24VDC and 48VDC respectively. These connectors are used to daisy-chain power from one module to the next).