40 mono input channels with vca control, 4 band sweepable/parametric eq 8 group masters 8 vca masters 11 x 8 mix matrix 8 x mute groups 8 x aux send (selectable as pre-fade, off or post-fade) 4 x stereo aux return with 2 band sweepable eq all connections via balanced xlr except insert points (1/4" jack) supplied with two psu's