BExpressive Compact with Distinctive, All-New Tones 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. 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.