This module is fully passive, and does not draw power nor have
a specified input/output impedance.
Bi-directional mono/stereo operation. White "L" jacks support stereo
signals on minijack and bigjack. Right channel (Ring) of stereo input will
be mirrored to the corresponding Red "R" minijack and bigjack.
Banana jacks are hardwired to the tip signals of the other jacks in the
same row.
0V GND is available as a banana jack at the bottom of the module.
