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Boss MO-2 Multi Overtone Guitar Effects Pedal

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Powered by Multi-Dimensional Processing technology (MDP), the MO-2 Multi Overtone uses your guitar's harmonic characteristics to create a wide range of extraordinary new sounds.Multi-Dimensional Proce... Click To Read More About This Product


Gear returned in mint condition. If you're looking for a virtually new instrument in possibly less-than-perfect packaging, this is a great value.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
Gear returned in great condition, with only minor signs of use, such as slight scuffs or pick marks. It looks and plays like new and may be considered an equivalent to display units found in retail stores.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
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Ship to Store Available in: 3-7 Days (estimated) Fairfax, VA (15.38  mi) View More Stores For Availability Store Information


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Powered by Multi-Dimensional Processing technology (MDP), the MO-2 Multi Overtone uses your guitar's harmonic characteristics to create a wide range of extraordinary new sounds.

Multi-Dimensional Processing for Superior Tone
Roland's innovative Multi-Dimensional Processing (MDP) analyzes audio signals in many dimensions and applies ideal effects to each. By giving different dynamic changes relative to the input signal in real time, MDP can create bold, all-new sounds with a previously unattainable range of expression.

MO-2: An Expressive New Voice
The MO-2 produces incredibly distinctive and expressive tones only possible with the magic of MDP. Using your guitar's rich harmonic characteristics as a starting point, the MO-2 builds completely new voices that enhance and thicken your normal sound. Three different modes offer diverse tone-shaping options, while the DETUNE knob unlocks a wide range of impressive modulation effects. From shimmery multi-string resonance to flute-like transparency to powerful textures reminiscent of organs and synths, the MO-2 brings you an array of unique sonic tools that add all-new dynamic resonance characteristics to your guitar.


  • Next-generation BOSS compact pedal with innovative Multi-Dimensional Processing, realized with proprietary technology and custom DSP
  • Impressive, harmonically rich sounds that compliment 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 M ohm
  • Nominal Output Level: 20 dBu
  • Output Impedance: 1 k ohm
  • Recommended Load Impedance: 10 k ohms or greater
  • Controls: Pedal switch BALANCE knob TONE knob DETUNE knob MODE knob
  • Indicator: CHECK indicator (Serves also as battery check indicator)
  • Connectors: INPUT jack OUTPUT-A (MONO) jack OUTPUT-B jack AC adaptor jack (DC 9 V)
  • Power Supply: Alkaline battery (9V, 6LR61) or Carbon-zinc battery (9V, 6F22) AC adaptor (sold separately)
  • Current Draw: 40 mA * Expected battery life under continuous use Alkaline: Approx. 10 hours Carbon: Approx. 3 hours These figures will vary depending on the actual conditions of use.
  • Accessories: Owner's Manual Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTE," and "Information") Alkaline battery (9V, 6LR61)
  • Option (sold separately): AC adaptor (PSA series)
  • Dimension (W x H x D): 2-7/8" x 2-6/16" x 5-1/8"
  • Weight: 1 lb.
Pro Coverage
Boss pedals - 5 year parts warranty
90 day labor warranty.
1 year warranty - Multitracks, Jamstations, etc.
Check with manufacturer for specific product warranty.

Pro Coverage gives you added warranty protection for your gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Click To Read More About This Product.

Pro Coverage includes
  • Accidental damage protection
  • Expedited repair or replacement
  • Free shipping (for returns or repairs)
  • 100% coverage for commercial use
  • Extended price protection
  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to five years from date of purchase
  • Repair authorization-toll-free by phone or via the web
  • Customer Reviews

Review Snapshot

by PowerReviews
BossMO-2 Multi Overtone Guitar Effects Pedal

(based on 4 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 1 Stars



Reviewed by 4 customers

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(1 of 1 customers found this review helpful)


best pedal addition I have made

By Andy Berridge

from marion, ohio

Comments about Boss MO-2 Multi Overtone Guitar Effects Pedal:

This is the best addition I have ever made to my acoustic guitar rig. The pedal makes tones easier to hear with out turning up the volume. I use an Ebow with this to get an awesome flute sound. I also have the new tera echo and adaptive distortion and together they are killer! I played for 3 hours last nite playing with the differant sounds, you can add just a little and get a shimmering acoustic sound or add alot of blend and sound like a hammond B3 or fender rhoads. It sounds better than any guitar synth I have ever used.Distortion sounds are hard to get right on an acoustic but these pedals make it sound sooo sweeet.I also use a wah wah, boss dynamic-wah w/expression pedal, boss digital delay, boss GE-7 eq, boss chorus, boss looper, pz pre tone bone,fishman DI mic immulator and digitech vocalist live 3 played thru a rolland ac90 acoustic amp w/kc-1 sub woofer and samson mixer to yamaha speakers, oh and a capo (lol). this is a must get pedal!

(1 of 1 customers found this review helpful)


Cool, Clean, Fun

By David Jenks

from Medford, OR

Comments about Boss MO-2 Multi Overtone Guitar Effects Pedal:

One of Boss' latest additions to their ever-impressive line, the MO-2 provides super-clean, super-clear overtones that offer a new dimension of sound possibilities. The quality alterations of its output are so impressive that it moves guitarists closer to a place that previously occupied only by keyboard players. I use the MO-2 with the SD-1 Super OverDrive and the OC-3 Super Octave between a Gibson Les Paul and a Fender Mustang I amp. The Mustang can simulate all kinds of things, but I find the best sound when setting my amp to the cleanest, unmodified sound I can, and use the pedals as much as possible. My suggestion before purchasing the MO-2 is to listen to the videos on YouTube first, especially the one published by rolandmedia. The demos I've seen are very true-to-life, and are easy to reproduce with little effort. If you like what you hear, it's for you.


Awesome pedal

By Mo

from California

About Me Professional Musician

Verified Buyer


  • Compact Design
  • Good Selection Of Effects
  • Versatile


    Best Uses

    • Amateur Recording
    • Home Studio
    • Performances

    Comments about Boss MO-2 Multi Overtone Guitar Effects Pedal:

    It would be great to have presets on it


    I'm glad GC sent me an e-mail for the MO-2

    By DAVID

    from undisclosed

    See all my reviews

    Verified Buyer

    Comments about MO-2 Multi Overtone Guitar Effects Pedal:

    I had some ideas for this pedal from the YouTube demos and I've worked out some rhythm patterns using the MO-2 sounds as either background or the bass for the music I like to make. This pedal has been a re-charger for me.

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