Look closer, George, after clicking on the rear panel photo to expand it. Just above the connectors, and just below the XLR1 and XLR2 markings, one connector is labelled "L" and the other is labelled "R." And likewise on the XLR digital inputs of the matching D-03 DAC. All of which makes sense given that the DAC is described as being two mono converters on a single chassis.
Regards,
-- Al
Regards,
-- Al