Toadworks Death Rattle mk II- Specifically the plexi circuit. I don't know if may factory defect but you'll get a very very muddy sound when you adjust the plexi gain knob to more than 11 o'clock. Also, the tone knob is useless. Very slight to no change of tone from 0 to 10. This is a boutique pedal and I think matagal na discontinued. Sino kaya may death rattle dito sa forum? If we have the same problem then this stays in the closet. Too bad nagugustuhan ko yata yung tweed circuit and the 'Fat' boost nya.