④TONE
This controls the amount of high 
frequencies. Turn it clockwise for 
more treble and counterclockwise for 
less treble.
⑤LEVEL
This controls output level of effected 
signal. Typically output levels of both 
normal signal and effected signal 
should be adjusted to equal levels.
⑥FOOTSWITCH
Switch for effect on/off. Stepping on 
this switch alternately turns effects on 
and off.
*Effect turns on when you depress 
the switch and effect turns off when 
you depress and release the switch.
⑦LED INDICATOR
This indicates the effect/bypass 
status and battery condition.   It 
lights when plug is inserted to input 
jack and effect is on.  No LED light 
indicates the battery is low or not 
installed.   In this case replace the 
battery.
⑧DC IN (power input jack)
A jack for connection of external 
power supply to effect.   Be sure to 
use the correct Maxon AC adaptor.
  Turn down amplifier's volume to 
  the minimum before connecting 
AC adaptor to the product in order 
not to damage other connected 
equipment. 
5
ENGLISH
OD9
●True Bypass Switching lets your instrument's signal pass through a non-
electronic bypass line when the effect is disengaged, feeding your amp with 
direct, unaltered signal from your instrument.   
 Low noise mechanical switch is used for effect/normal switching.
●LED to indicate effect/bypass and battery condition for trouble-free  
performance.