19 EQ LOWAdjust the Low frequencies (Bass) of the Left/Right assigned Channels 20 EQ MIDAdjust the Middle frequencies (Mid) of the Left/Right assigned Channels 21 EQ HIGHAdjust the High frequencies (Treble) of the Left/Right assigned Channels 22 FILTERApply a Color FX to the selected Left/Right Channel. By default Filter Color FX is selected. A different Color FX can be chosen via the DJM-S9 Utilities 23 TRIMAdjust the Pre-fader Output level (Gain) of the selected Left/Right deck 24 SOURCE SELSelect the source for the Left/Right mixer channel Left selector : Deck 1 (USB A), Deck 3 (USB A), CD/LINE (CH1), PHONO (CH1), Deck 1 (USB B), Deck 3 (USB B) Right selector : Deck 2 (USB A), Deck 4 (USB A), CD/LINE (CH2), PHONO (CH2), Deck 2 (USB B), Deck 4 (USB B)25 MASTER VOLAdjust the Level of the Master Output26 BOOTH VOLAdjust the Level of the Booth Output (connection at the rear panel)27 PANEL UTILITYUse this button to cycle through the 4 available center Panels of VirtualDJ default GUI (Mixer, Video, Scratch and Master) Hold for more than 2 seconds to enter the Utilities menu of the unit. Togle between normal and Browser Zoom (with Mini decks) modes
Additional note
The entire Equalizer, Filter and Master section of the unit is Hardware operated. The VirtualDJ Equalizer and Filter are not used, even thought the knobs on the GUI follow the actual ones (fake mode)