PEDAL SWITCH FOR AMPLIFIER Footswitch with 1 button. Robust construction. Connection via standard instrument cable. Compatibility: Crush 20, Crush 20RT & Crush 35RT (Channel). Crush Pro Series (Channel or Reverb). TH30 & TH100 (Channel). Dual Terror (Channel). AD30 (Channel). OR50 (Master Volume Defeat). Custom Shop50 (EQ Lift). Rockerverb (Reverb or Channel). Thunderverb (Reverb or Channel). Dual Dark (Channel or Attenuator). OR100H (Channel or Gain Boost or Global Boost). OB1-300 & OB1-500 (Blend Control).