The M80 starts as a solid, high-quality direct box. Then it adds a mountain of features -- making it, pound for pound, one of the most powerful bass tools ever. In this little box reside a fully controllable Distortion channel with gain, volume, and blend controls; a smart Noise Gate to clean up your signal, a Color switch; and a preset EQ contour that immediately puts your bass tone into the "sweet spot" of the mix. For every bass tone from pure and clean to furious and growling, it's all in this rugged little box.
Get an overview of the M80 Bass D.I.+ in this video from MXR: