This DOD Grind pedal is defunct. It sounds menacing, yes? But its tonal ferocity isn't as extreme as you'd expect. It has that amp voicing which makes it rather appealing but it lacks a midrange control. The Bass + Treble features are adequate but it scoops out the tone too much at higher volume settings & sounds undefined thereafter. It isn't too different from the current BOSS Power Stack offering but I guess BOSS did their homework with the PS- the definition is more attractive.
The pedal you see above isn't mine, it belongs to a friend, Mr. Azhar, who is more bass inclined but a keen DOD buff. The pedal here was bought at a very good discount because it's not in 100% working condition. I couldn't power it up with a battery but once it's juiced by an adapter, it can't be switched off.
