The Boss MO-2 Multi Overtone pedal was announced at NAMM earlier this year along with the TE-2 Tera Echo and DA-2 Adaptive Distortion which I have recently recorded demos for. Each of these new pedals have a bit of a new take on certain effects and use the new Multi-Dimensional Processing technology (MDP). This particular effect has 3 different modes for adding different overtones, if you engage Mode 1 it adds an upper octave, Mode 3 adds a sub-octave and Mode 2 blends both and adds overtones to the original signal octave too. To add even more control you have a Balance control which lets you blend how much of the original tone you hear, basically a Dry/Wet control. There is also a detune control which adds anything from subtle detuning to outrageous modulation reminiscent of a Chorus with the depth and rate up full or a rotary simulator. Finally you have a Tone control to accentuate or soften the overtones to your taste.
As you can hear from the intro I found it very easy to immediately get some great Rock/Funk tones and wrote that little Hendrix inspired track within 10 minutes of getting the pedal out of the box, I used a few different modes so you can hear the pedal in context before a more in-depth demonstration of the individual controls.
For more information on the Boss MO-2 Multi Overtone Pedal check out http://www.rolandcorp.com.au/.