Boss MO-2 Multi Overtone Pedal

Overtone Generator with Stereo Output
Boss MO-2 Multi Overtone Pedal image 1
Boss MO-2 Multi Overtone Pedal image 1
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Boss MO-2 Multi Overtone Pedal
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Expand Your Sounds with Overtones

Sculpt a new sound for your guitar with the BOSS MO-2 Multi Overtone Pedal. This pedal adds overtones to your original signal to create an enhanced, natural multi-string guitar tone that is only available with BOSS's technology. Enhance your guitar sound to create a killer sound space that sets your sound apart from the rest. Stereo outputs let you hook up two amplifiers to create a lush and deep stereo sound.

BOSS MO-2 Multi Overtone Pedal at a Glance:

  • Stereo output for huge sound

  • Rugged design and construction that will stand up
  • BOSS guitar pedals: more than 10,000,000 sold
Stereo output for huge sound

Create a huge stereo landscape with the MO-2's stereo output. The overtones added will give you a sweet and complex guitar sound. You can also use the stereo outputs to drive two amps simultaneously.

Rugged design and construction that will stand up

Each BOSS pedal is housed in a stomp-ready metal box and features a rubberized stomp area and base, to help safeguard against slipping. In other words - their built like a tank. So, whether you're a fresh-out-of-the-gate beginner, an axe-veteran designing your dream pedalboard, or anywhere in between, you can depend on BOSS's proven line of pedals to craft your tone.

BOSS guitar pedals: more than 10,000,000 sold

More than 10,000,000 BOSS guitar and bass effects pedals have been sold to players worldwide, including such esteemed players as Yngie Malmsteen, Dave Navarro, John Petrucci, Marty Friedman, Steve Vai, and Joe Satriani. You've also no doubt heard BOSS pedals recorded and onstage beneath the feet of bands of all genres, including Muse, The Killers, and Silversun Pickups. The reason for the success is clear: BOSS effects pedals sound great and are designed with serious use in mind.

BOSS MO-2 Multi Overtone Pedal Features:

  • Unique tone pedal for your guitar

  • Add overtones to your guitar for a huge sound
  • Stereo outputs for feeding two amps
  • High-tech insides with an easy-to-use control panel
Give your guitar sound a makeover with the BOSS MO-2 Multi Overtone Pedal.

Tech Specs

Pedal Type Harmonizer
Inputs 1 x 1/4"
Outputs 2 x 1/4"
Batteries 1 x 9V
Height 2.375"
Width 2.875"
Depth 5.125"
Weight 1 lbs.
Power Supply Included No
Manufacturer Part Number MO-2

Customer Reviews

Based on 4 reviews
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This pedal gives me the sounds of some of my favorite 60s-70s material that I love playin', such as early Clapton (Cream, Blind Faith), as well as Jethro Tull (Aqualung, especially, is just "screaming" out of this pedal! Love the 3 variations produced from the Mode dial, & the Detune feature adds to the fascination! Simply stated: BUY will NOT be disappointed! As I've written numerous times over the past few years, MIKE SOPER is a FANTASTIC Sales Engineer, as well as a super-friendly & most-caring customer advocate! He will always treat you right in providing you with what you need, & will spend all the time needed to answer your questions, to explain technical info., etc.! For example, in this case, I am new to the "pedal world", and I bought several other effects pedals along with this one. I also bought a pedal board. Mike gave me step-by-step directions on how to connect the different cables to where, & he even advised me as to the best order of which pedal should go 1st, 2nd, 3rd,...and so on! As a result of Mike's great knowledge & advice, I am havin' a freakin' ball playin' my electrics with my effects pedals! When you buy from Sweetwater (the ONLY place to buy from), do yourself a big favor, & ask for MIKE SOPER at Extension 1342. You will always be very, very happy with the results!
Music background: Long-time guitar player

Great Effect

This is a great pedal that gives organ like effects to your playing! I use it to make little palm muted notes sound bigger, and i kick it in during sections of solos to dramatize them! It has its uses for sure!
Music background: studio and gigging musician

Boss Homerun

This new Boss pedal has been a great addition to my acoustic guitar pedal board.I use it to fatten up my solos and riffs. Its very quiet,, easy to use and I love it! Great job Boss!
Music background: church muscian


I think is a very different and innovative pedal, the tones that you can get out of this device are uniques, the applications could be endless and once again this new MDP technology really does its job.
Music background: Pro musician, Bachelor in Music

Sweetwater Advice

Boss MO-2 Multi-Overtone

If you're itching to blend some overtones and new textures into your rig and want to avoid some of the larger contraptions, this Boss is a little saddlebag of octave effects overflowing with harmonizing tricks....
read more
See also: Harmonizer Pedals, Boss, Boss Harmony Processors