Electro-Harmonix Operation Overlord Overdrive Guitar Effects Pedal 113006035

The Electro-Harmonix Operation Overlord is a highly versatile, multi-instrument overdrive pedal. Featuring a switchable JFET normal mode and a classic-style boost circuit, it offers immense tone-shaping, an active 3-band EQ, and a dry blend control for unparalleled sonic flexibility.

Why It’s UniqueWhile many overdrives are strictly tuned for guitar, the Operation Overlord (and its smaller mono sibling, the EHX Nano Operation Overlord) is engineered as an Allied Overdrive. The pedal's broad headroom, versatile gain staging, and wet/dry mix make it incredibly popular for both bass and keyboards, as it never muddies up the mix or loses the bottom-end of your instrument. Additionally, the standard version features true stereo inputs and outputs, making it perfect for multi-amp rigs or stereo keyboards. [1, 2, 3, 4, 5]

The Electro-Harmonix Operation Overlord guitar effects pedal is an advanced, feature-laden, stereo overdrive and distortion pedal with a broad range of options and controls. With the Operation Overlord—whether you play keyboards, guitar, bass or pretty much any electronic instrument—dialing in great drive sounds is fast and foolproof. Active Treble, Mid and Bass controls, a footswitchable Boost mode and a dry blend deliver superlative sound shaping. It even features two independent channels for use with stereo setups. Whatever your rig, the Overlord is your indispensable ally.

• Dual-Mode Operation:
• • Normal Mode: Employs three amp-like JFET gain stages for smooth, low-to-medium gain sounds and tube-like responsiveness.
  • Boost Mode: Puts an additional overdrive circuit before the JFET stages, driving the signal into heavily saturated, aggressive distortion. [1, 2, 3]
• Ultimate Tone Shaping: Includes a powerful 3-band EQ (Treble, Mid, and Bass) to sculpt your specific frequency response. [1, 2, 3, 4]
• Dry Blend Knob: Allows you to mix your clean signal back into the drive. This is incredibly useful for bassists and keyboardists to retain low-end punch and instrument articulation. [1]
• Input Level Switch: A 3-position toggle switch matches the pedal's input impedance and sensitivity to different instruments—from low-output vintage single-coils to high-output active humbuckers and line-level synthesizers.
• The Electro-Harmonix Operation Overlord Allied Overdrive is a highly versatile, multi-instrument analog distortion and overdrive pedal designed for guitar, bass, and keyboards.
• Circuitry: 100% Analog

Connectivity & I/O

• Inputs: 2 x 1/4" TS jacks (Left/Right)
• Outputs: 2 x 1/4" TS jacks (Left/Right) [1, 2, 3, 4]

Control Interface

• Knobs: Gain, Treble, Mid, Bass, Dry (blend), and Volume
• Footswitches: Bypass and Boost
• Input Level Switch: 3-position toggle (Hi, Normal, Low) to match different instruments [1, 2, 3, 4]

Core Architectural Features

• JFET Gain Stages: Uses three JFET amp-like gain stages in Normal mode to emulate genuine tube response. [1, 2]
• Dual Modes: Normal Mode covers mild to medium drive. Activating Boost mode inserts an independent classic overdrive circuit ahead of the JFET network for heavier, saturated distortion. [1, 2, 3]
• Dry Blend: Allows you to blend your unaffected dry signal with the distortion, preserving clean note definition and low-end articulation.

• Bypass Type: Buffered Bypass
• Audio Track: Fully Stereo Capable (also runs in Mono)
• Input Impedance: 1 M Ohm
• Output Impedance: 220 Ohm
• Current Draw: 90mA @ 9VDC
• Power Supply: 9.6VDC-200mA power adapter (Included)
• Dimensions (Full-Sized): 4.13" x 4.75" x 2.25" (105 x 121 x 57 mm)