Active Feedback Loop that creates different opportunities for creating and listen to: bipolar feedback of any combination of sound processing devices, and signal difference of input and return signals.In mint condition with original box.Product SpecsItem Number: 23070Make: Fairfield CircuitryModel: Hors d’Oeuvre?Condition: MintFinish: AluminiumCategories: effects-and-pedals controllers-volume-and-expression pedalMade In: CanadaMPN: 23070