Vintage Dean Markley Overlord Classic Tube Overdrive Guitar PedalNotes pedal functions as intended, but all pots are scratchy when turned. No noise when playing. tube is believed to be a 12ax7 missing two screws and rubber feet for the bottom, the two remaining screws fasten with no issue. Pictures didn't have them fastened. A Vintage Dean Markley Overlord Classic Tube Overdrive Guitar Pedal in Good condition! At Evolution Music, we attempt to highlight cosmetic defects (if any) by picturing every angle of every