Stanton RM.404 - Manual (Page 6)

RM.404 Top Panel (FUNCTIONS)
Section B: Output Controls
3. Master Level: Controls the overall output level of the audio signal sent
through the Master connectors (see Output Connections.)
4. Stereo/Mono Switch: Switches the Master output between a stereo or
mono signal. Mono mode can be used to accommodate some large PA sys-
tems. It can also be engaged in the event of a sudden loss of stereo signal
in phonograph cartridge connections [Stereo = UP position.]
5. Zone Level: Controls the output level of the audio signal sent through the
Zone connectors (see Output Connections.)
6. Master Pan: Controls left/right signal balance of the Master Output (#3.)