Eleven modulation machines. One little box. Endless sonic possibilities.

Why settle for one modulation effect when you can have eleven?

The Electro-Harmonix MOD 11 is a seriously powerful modulation workstation disguised as a compact stompbox. From lush, swirling vintage chorus and psychedelic Uni-Vibe textures to throbbing tremolo, rotary speaker simulations, and wild through-zero flanging, this little purple powerhouse delivers an enormous palette of sounds.

Whether you're chasing the shimmering tones of classic recordings, building atmospheric soundscapes, or venturing into experimental territory, the MOD 11 has you covered.

11 Effects Under the Hood

• Tremolo – Classic pulsing amplitude modulation, from subtle movement to dramatic rhythmic chops.
• Harmonic Tremolo – Rich, vintage-inspired frequency-dependent tremolo with a uniquely hypnotic character.
• Vibrato – Smooth, expressive pitch modulation for vintage wobble and warped tape-style textures.
• Uni-Vibe – That unmistakable swirling, throbbing psychedelic sound.
• Chorus – From subtle analog-style thickening to lush, spacious modulation.
• Rotary – Spinning speaker simulations with beautiful movement and dimension.
• Flanger – Sweeping jet-plane textures, metallic resonance, and classic psychedelic whoosh.
• TZF – Through-zero flanging for dramatic, otherworldly sweeps.
• Phaser – Liquid, swirling phase shifts, from subtle vintage coloration to deep modulation.
• Pitch – Creative pitch-based modulation for unusual harmonies and shifting textures.
• Filter – Animated filtering for funky, vocal-like sweeps and rhythmic movement.

Small Footprint. Serious Firepower.

Don't let the compact enclosure fool you. The MOD 11 goes considerably deeper than your average modulation pedal.

Features include:

• Eleven distinct modulation effects
• Secondary controls for deeper parameter editing
• Tap tempo for synchronizing modulation speed
• Multiple operating modes within individual effects
• Momentary mode for expressive performance control
• True bypass switching
• Standard 9V DC power operation

It's an entire modulation pedalboard in one compact enclosure!

Condition – Open Box / Unused

This MOD 11 has never been played or put into service. It was removed from its original packaging for inspection and photographs only.

Includes the original Electro-Harmonix box and pictured accessories.

From Eclectic Sounds – Portland, Oregon

We love unusual, inspiring, and genuinely useful musical equipment. The MOD 11 checks all three boxes.

Whether you're a working guitarist, studio experimenter, ambient explorer, or just someone who loves great effects, there's a tremendous amount of creative potential packed into this pedal.

Eleven effects. One pedal. A universe of modulation.

Professionally packed and shipped from Eclectic Sounds in Portland, Oregon.