Early units (before serial number 019388):

1 x stereo fader used for LR

AI8117 x8 mono (WHITE)

AI8118 x2 stereo (BLUE)

AI8118 x1 stereo FX (YELLOW)

AI8117 x2 FB1 / FB2 mono (BLACK)

AI8118 x1 stereo LR (RED)

Units with serial number 019388 and higher:

2 x mono faders used for L and R

AI8117 x8 mono (WHITE)

AI8118 x2 stereo (BLUE)

AI8118 x1 stereo FX (YELLOW)

AI8117 x2 FB1 / FB2 / mono / (BLACK)

AI8117 x2 LR / mono (RED)