VULCAN effector with drive and volume adjustment. It goes without saying that this legendary effector is famous, although there are few of them and not much information available. The serial # of this item is in the single digits. Thank you very much for your consideration. - Model Name: VULCAN - Drive Knob: Yes - Volume Knob: Yes - Switch: Yes Thank you for viewing. No pets, no smokers. No returns or exchanges. Thank you. #NewOldStock #New #Overdrive #Overdrive #Unused #RareItem #NotForSaleEffector #LimitedEditionEffector #Effector #RareEffector