... plug supporting4.Interface MIDI interface,USB interface, pedal interface(for a switching or continuous pedal controller ) 5.Power 9-12V ... A4/B1~B4 KnobsAssignable knobs with an independent channel and controller distributed to each Knob. 5SLIDERAssignable fader. Use the ... 2.the rear NO.FUNCTION1MIDI OUT, MIDI output interface.2USB, USB interface. 3PEDAL, Assignable pedal inter face 4DC12V, 12V power ...