B-Stock Boss MO-2 Multi Overtone Pedal

B-Stock Boss MO-2 Multi Overtone Pedal

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This product may have been opened for demonstration, returned by a customer, refurbished, or may have non-essential parts or software missing. Otherwise, the product operates as new. The product in the image may not be of the exact item, but if there are any concerns around packaging, condition or usability before dispatch, we will contact you immediately.

When buying a B-Stock product from PMT, you'll get exactly the same manufacturer's warranty and protection as if you bought an A-Grade product!


The Boss MO-2 Multi Overtone pedal works great for both electric guitar and bass guitar, giving you some incredible new sounds, using your instrument’s harmonics.

Extraordinary New Sounds for Your Guitar or Bass

Using Multi-Dimensional Processing technology, or MDP for short, the Boss MO-2 Multi Overtone pedal takes your guitar’s own harmonic characteristics and creates a huge range of incredible new sounds.

Boss MO-2 Multi Overtone Pedal Key Features:

  • Next-generation BOSS compact pedal with innovative Multi-Dimensional Processing, realized 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
  • BOSS five-year warranty

Multi-Dimensional Processing Technology

Utilising Roland’s innovative MDP Technology, the Boss MO-2 Multi Overtone pedal analyses many different facets of the audio signal from your guitar and applies the optimum effect to each.

This means that the Boss MO-2 Multi Overtone pedal can even react to your playing performance.

Ultra-responsive to both volume changes and playing dynamics, the Boss MO-2 Multi Overtone offers you an amazing range of expression with its unique sounds.

Three Unique Tone Shaping Modes

On the face of the Boss MO-2 Multi Overtone pedal you’ll find a Mode knob which allows you to quickly dial in one of three great starting points for brilliant sounds.

In Mode 1, you get a beautifully shimmery, multi-string resonance. With Mode 2, you can perform with thick, powerful textures reminiscent of organs – this mode works particularly well with the Boss RT-20 Rotary Sound Processor.

Last but not least, Mode 3 adds some real girth to your guitar sound, allowing you to thicken and enhance your clean playing with some lower tone.

Further Sculpt Your Sound

In addition to the mode knob, there are three other controls that allow you to further sculpt your output.

A balance knob is found on the far left, allowing you to adjust the mix between your direct signal and the effect while next to it, the tone knob can adjust the amount of treble in your sound.

Lastly, there’s the DETUNE knob which can be used to add some great overtones and modulation effects to your sound, thickening it up and allowing for a lot of experimentation and tonal potential.

Expressive, Unique and Full of Potential

Suitable for both guitar and bass, the Boss MO-2 Multi Overtone pedal is a great way of creating new sounds and sculpting your own sonic identity.

Buy the Boss MO-2 Multi Overtone pedal and add unique sounds to your performance which respond to your playing.

Boss MO-2 Multi Overtone Pedal Specs:

  • 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
  • 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)

Boss MO-2 Multi Overtone Pedal Size and Weight:

  • Width: 73mm, 2-7/8 Inches
  • Depth: 129mm, 5-1/8 Inches
  • Height: 59mm, 2-3/8 Inches
  • Weight: 430g, 0lbs. 16 oz.
More Information
Manufacturer Boss
SKU 99918-B
Shipping Weight (kg) 0.560000
Warranty 5 Years


We have a wide range of Delivery Options available, depending on the value of your parcel and budget. Select from our 2-3 Day Saver Service or our Next Working Day options at the Checkout.
This will include a text or email on the day of delivery giving you an exact hour window of when your gear will be with you, and the drivers name - just so you know when to turn the volume down!

  • Free Delivery Available on Selected Products
  • Weekend UK Mainland Delivery (Saturday-Sunday): £19.99
  • Small Items (Under 750g) Small items will be delivered by Royal Mail starting from 99p
  • Heavy Items (Over 30kg): Pallet Service Doorstep Delivery £65

For heavy items, courier details, out of stock products, out of area postcodes or international deliveries see our full Delivery info here.


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B-Stock is in full working order and is protected by a standard Manufacturer's Warranty as if you are buying the A-Grade equivalent!

B-Stock may have been opened for Demonstration, returned by a customer, refurbished, or have non-essential accessories or software missing.

There may also be signs of use including minor wear and damage, and it may not come in the original packaging.