Maxon OD-9 Pro + Overdrive

The Maxon OD-9 Pro+ Overdrive is an evolved version of the OD9. In BOOST mode, an added mode switch (BOOST/NORMAL) provides smooth and pure tube sound by reducing high and low ranges and boosting mid-range. In NORMAL mode, the OD9Pro+ enhances the OD9's fat and natural scream sound.

The Maxon 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 compartment. OD9Pro+ can also be used at 9 volts (plus and minus 4.5 volts). Stable sound is constantly available regardless of selected voltage. True Bypass switching using 4PDT switch 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.

Easy-access, no tools battery compartment.