Unlike a conventional octaver, the Meatbox adds a synthesized sub-octave with a hint of envelope to your tone, and can even simulate subwoofers through a regular cab.
The pedal's raspy, nasal saw wave can be tweaked via the low and sub knobs, but it's best suited to baritones and extended-range guitars, since it has some difficulty tracking the open B string upwards.
Adding distortion post-Meatbox brings out the octave tone no end, but be careful: too much bass will kill your speaker at higher volumes!