Yamaha EMX 640 Owner's Manual page 6

Hi-Z Hi-Z Hi-Z Hi-Z LINE LINE EFFECT OUT
Lo-Z Lo-Z Lo-Z Lo-Z MIC MIC
FOOT SW
Ω Ω
Lo-Z jacks Hi-Z jacks
(XLR type) (TRS phone jacks)
S R T
GND GND
MONITOR
TAPE REC
IN OUT
AUX IN MAIN
INPUT TO MAIN OUTPUT
SEE REAR PANEL CAUTION
Ω
Ω
Ω