Boss MO-2 Multi Overtone Guitar Effects Pedal

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  • Create Rich, Harmonic Sounds to Enhance Your Performance
  • 3 Modes & Intuitive Controls Offers Excellent Tone Shaping
  • Features Boss’ Multi-Dimensional Processing Technology
  • Suitable for Clean & Distorted Guitars & Bass
  • Road-Worthy Metal Construction

Boss MO-2 Multi Overtone Guitar Effects Pedal

The Boss MO-2 Multi Overtone Guitar Effects Pedal unlocks your guitar?s harmonic potential, creating a wide variety of extraordinary soundscapes for delivering stunning performances. Boss? Multi Overtone Pedal is powered by their innovative multi-dimensional processing technology, offering rich sounds that complement and enhance your guitar?s original tone. Its powerful controls provide players with a wide range of tonal adjustments and is ultra-responsive to volume changes and your picking dynamics. Offering a mono or stereo output and suitable for bass guitars, Boss MO-2 Multi Overtone is the perfect companion for players wanting more out of their tone.

This Pedal is Eligible for Boss Collectors Club.

Product Ref: 33031

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An Expressive & Distinct Compact Pedal

The Boss Multi-Overtone is the perfect tool to help you get inspired by your guitar all over again, with its impressive, harmonically rich sounds complementing and enhancing your guitar's sound. Its three different modes provide a wide variety of diverse tone-shaping possibilities, with the detune control delivering an extended range of impressive modulations. Experiments with the controls to make your sound shimmer with multi-string resonance or give it powerful textures reminiscent of organs and synths.

Versatile Performance

Along with its incredible tones, the Boss MO-2 is equipped with mono and stereo outputs, letting players create excellent depth and definition. What makes this pedal the perfect companion for players is its ability to offer stunning effects for both clean and distorted guitars, and allows bassists to infuse their instrument with beautiful harmonic content.

Boss’ Unique Multi-Dimensional Processing

A unique feature of the MO-2 is Boss’ Multi-Dimensional Processing (MDP) technology, which works by analysing the studio signals in a variety of dimensions and then applying the perfect effect level to each stage. The end result is a bold, new sound with a previously unattainable range of expression and dynamic response.


  • Next-generation Boss compact pedal with innovative Multi-Dimensional Processing, realised with proprietary technology and custom DSP
  • Impressive, harmonically rich sounds that complement and enhance your straight guitar sound
  • Works well with both clean and distorted guitar tones, and also bass guitar
  • Ultra-responsive to volume changes and playing dynamics
  • Three different sound modes; wide range of tonal adjustment with simple controls
  • Mono or stereo output



  • Nominal Input Level: -20 dBu
  • Input Impedance: 1 Mohm
  • Nominal Output Level: -20 dBu
  • Output Impedance: 1 kohm
  • Recommended Load Impedance: 10 kohms or Greater
  • Controls: Balance, Tone, Detune, Mode, Pedal Switch
  • Indicator: Check Indicator
  • Connectors: Input Jack, Output-A (Mono) Jack, Output-B Jack, DC Input
  • Power Supply:
    • Carbon-Zinc Battery (9 V, 6F22) or Alkaline Battery (9 V, 6LR61)
    • AC Adaptor (PSA Series: Sold Separately)
  • Current Draw: 40 mA
  • Expected Battery Life Under Continuous Use:
    • Carbon: Approx. 3 Hours
    • Alkaline: Approx. 10 Hours
  • Accessories: Owner's Manual, Leaflets, Alkaline Battery (9V, 6LR61)


  • Width: 2.875’’ (73 mm)
  • Depth: 5.125’’ (129 mm)
  • Height: 2.375’’ (59 mm)
  • Weight: 0.43kg (16oz)