OD9Pro+ Overdrive
●An evolved version of the OD9.  In BOOST mode, newly added mode switch 
(BOOST/NORMAL) provides smooth and pure tube sound by reducing high and low
 ranges and boosting mid-range.  In NORMAL mode, OD9Pro+ enhances the OD9’s fat 
and natural scream sound. 
●OD9Pro+ uses a stabilized DC-DC voltage converter to bump 9 volts (plus and 
minus 4.5 volts) up to 18 volts (plus and minus 9 volts).  Operating voltage is 
switchable via an internal DIP switch accessible through the unit’s battery compart-
①IN (input jack)
 Input jack to connect to the output of guitar, 
other effects or related equipment. The 
product automatically turns on when a plug 
is inserted into this jack.  When not in use, 
disconnect plug from input jack to preserve 
battery life. 
 * When an external AC adaptor supplies DC 
power to this product, the power is always 
on and battery is preserved regardless of
 input jack connection. 
②OUT (output jack)
   Output jack to connect to input of amplifier
 or other effects.
③DRIVE
 This controls overdrive level. Turn it clock-
wise for more overdrive and counter-clock-
wise for smooth natural clean sound. 
④TONE
 This controls the amount of high frequen-
cies. Turn it clockwise for more treble and 
counter-clockwise for less treble. 
18V↔9V