MAXON SD9 Sonic Distortion

The Maxon SD9 Sonic Distortion, released in 1983 as part of Maxon's 9-Series pedals, is a high-gain distortion pedal known for its aggressive tone and versatility. Designed by Susumu Tamura, it was developed alongside the Ibanez TS9 Tube Screamer, sharing the 9-Series platform but offering a vastly different tonal profile. While the TS9 emphasized smooth midrange overdrive, the SD9 delivered a harder, more biting distortion with extended low-end and treble frequencies, making it ideal for rock and fusion players.

History and Design

• Origins: The SD9 was created by Maxon for Ibanez's export market under the 9-Series branding. It targeted players seeking a more "rock-oriented" sound compared to the Tube Screamer's midrange-focused overdrive.
• Circuitry: The SD9 features controls for Gain, Tone, and Level. Its wide tonal range allows for everything from tight rhythm distortion to saturated lead tones. The Tone knob adjusts both treble and bass frequencies, giving it a broader EQ sweep than many other distortion pedals.
• Modifications: Over time, the SD9 has been refined by companies like Analog Man, whose "Super Mod" smooths out harsh frequencies and enhances clarity while retaining its signature gain structure.

Popular Settings

• Classic Distortion: Gain at noon, Tone at 10 o'clock, Level slightly above unity. Perfect for crunchy rhythm tones with balanced mids.
• Saturated Lead: Gain at 2 o'clock or higher, Tone at noon or slightly higher, Level boosted. Delivers thick sustain with cutting highs.
• Edge-of-Breakup: Gain at 10 o'clock, Tone at 11 o'clock, Level maxed out. Ideal for dynamic playing into an amp set near breakup.

Notable Players

The SD9 has been favored by guitarists across genres for its versatility and unique tonal character:

• Michael Landau: A longtime user who has incorporated the SD9 into his signature sound, even inspiring refined versions like the Vemuram Butter Machine.
• Oz Noy: Frequently uses it for its warm yet aggressive distortion in fusion and jazz-rock settings.
• Scott Henderson: Known for using modified versions of the SD9 to achieve his dynamic lead tones.

Legacy

The Maxon SD9 Sonic Distortion remains a cult favorite among players seeking a high-gain pedal with a distinctive voice. Its ability to deliver everything from tight rock riffs to saturated leads has kept it relevant since its release in the early ‘80s. With modern reissues and modifications enhancing its usability, the SD9 continues to be celebrated as one of Maxon's most versatile and enduring designs.