In order to provide 16 channels of audio via a single DB25 port, ORIA uses a standard TASCAM pinout on its AES DB25 output.
For best results, a DB25 to 8x XLR 110-Ohm loom, using a Tascam-standard Pinout, should be used as per AES/EBU standards. However, this isn't a standard off-the-shelf cable and can be difficult to source unless custom-made.
In our testing, a standard Analog DB25 to 8x XLR loom can be used to break out the DB25 to 8x XLRs, which can then be connected to 110 Ohm XLR to XLR cables to feed your monitors.