Maxon SD-9 Sonic Distortion Pedal
The Maxon OSD-9 Pedal may look just like your old overdrive/soft distortion stompbox, but that's where the similarities end. With improved circuitry, the OSD-9 Pedal stands at the forefront of the Maxon 9-Series effects pedal evolution.
The OSD-9 Overdrive/Soft Distortion uses a signal-distorting diode (Panasonic #MA150) that is located in the amplifier stage's negative feedback loop (this stage also contains the JRC4558 IC chip). Therefore, the OSD-9 distorts 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 OSD-9 stombox's 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 OSD-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 OSD-9 effect pedal features True Bypass Switching for natural, uncompromised tone in bypass.
Like the OD808, the OSD-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.
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- Improved circuitry
- Natural sounding distortion
- True bypass
- Clean boost option