• Effect Type: Overdrive
• Technology: Analog
• Mono / Stereo: Mono In, Mono Out
• Controls: Drive, Level, Tone
• Modes: 2 Modes
• Switches: Normal/Boost
• Bypass Mode: True bypass
• Power supply: 9 VDC, Center negative
• Power Consumption: 35 mA
• Battery powered: Battery Powered
• Battery Type: 9 V Block
• Housing size: Standard
• Dimensions (WxHxD / cm): 7,4 x 5,3 x 12,4
• Country of Origin: Japan

• Provides natural mild overdrive
• Switchable Boost: =3dB midrange boost while high and low frequencies are reduced slightly
• True Mechanical Bypass switching
• Die Cast Zinc chassis
• Easy Access Battery compartment
• AC/DC Power Operation
• LED Power/Battery indicator

Maxon OD-9 Pro+ Overdrive · Guitar Effect

The Maxon OD9 Pro Plus Overdrive Pedal may look familiar. Like the OD808, the OD-9 provides the natural, mild overdrive of a tube amp without sacrificing the guitar's original tone. It can also be used as a clean booster to provide increased gain from an amplifier.

The OD9 Pro Plus overdrive pedal uses a signal-distorting diode that is located in the amplifier stage's negative feedback loop that contains the JRC4558 IC chip. Therefore, the OD-9 pedal distorts the signal in the amplifier section itself, which yields a smoother, milder, more natural sounding distortion than a separate clipping stage. This is also the reason that the IC type used in the circuit has such a large impact on the unit's tone. Maxon developed this unique design more than 20 years ago, an industry first that is commonplace today.

The OD-9 Pro Plus's new circuit uses different output resistors than its predecessor. After the unit's initial release it was discovered to have a high susceptibility to noise due to static electricity buildup. To improve performance, the values of the output resistors on the OD-9 were increased, but their positions kept the same as the original. This circuit change has no audible affect on the sound of the unit, save for reducing unwanted noise levels. In addition, the OD-9 features True Bypass Switching for natural, uncompromised tone in bypass.

Maxon Nine
The original! Maxon, a Japanese effect device manufacturer produced not only under its own brand name but also as an OEM manufacturer for other companies. The Maxon Nine series was sold in the early 80s under the label Ibanez. Pedals such as the TS-9 were best-sellers. After moving away from Ibanez, Maxon offers its pedals again in Europe under its own brand name. The Nine series corresponds largely to the vintage Ibanez 9 series, with Maxon however, you don't have to miss out on modern features such as True Bypass.