Canon DP-V2421 4K Reference Display - Manual (Page 75)

75 OSD Menu
Audio Settings
This menu is used to set audio output from the headphone terminal.
Item Setting Options (underline indicates factory default)
SDI Group Switches the audio group to be input during SDI audio input.
CH1-CH8, CH9-CH16
CH L/R (SDI) Sets the audio to be output from the two channels (L/R) of the headphone respectively. The options differ
according to the "SDI Group" setting.
When "CH1-CH8" is selected for "SDI Group":
CH1-CH8
When "CH9-CH16" is selected for "SDI Group": CH9-CH16
CH L/R (HDMI) Sets the audio to be output from the two channels (L/R) of the headphone respectively.
CH1-CH8
Volume Sets the volume. (Increments of 1)
0 to 100 (30)
Audio Switch Sets the stereo output.
L R, L, R, MIX (L+R)