Hi Toby,
all Line output jacks and Line input (Aux in) jacks on Genos are unbalanced (use TS plugs only). For longer distances use short TS cables and DI boxes on the Line outputs.
The Mic input (combo jack) is balanced. You can use balanced or unbalanced cables / connectors (XLR male, TRS or TS phone plug). If you use an unbalanced XLR cable (pins 1 and 3 bridged), you should switch OFF the 48V phantom power.
The Head Phones jack is a Stereo output, of course (use TRS jack Stereo).
Best regards,
Chris