This is a BOSS Turbo Overdrive. It's a nice, subtle distortion and easy to use. I used it with the Turbo ON. Operation has been confirmed. I used it recently. The rubber on the pedal's opening/closing mechanism is missing. To prevent any issues with part replacements, returns and cancellations are not accepted under any circumstances. Please understand this before purchasing. #BOSS #BOSSTurboOverdrive #Overdrive