PHONES MIX. Send audio signal from the Master Output to the Headphones channel when in MIX (right) position. Send audio signal from the Decks that have their PFL enabled to the Headphones channel when in CUE (left) position. Blends the above audio signals when in all other positions
PHONES VOLUME : Adjust the Level of the Headphones Output Channel
MAIN VOLUME : Adjust the level of the Master Output
SPEAKER VOLUME : Adjust the level of the front-panel Mixstream Pro Speakers. Hardware operation, knob is unassigned.