BOSS foot volume pedal FV-30L. Low impedance specification. Generally connected after effects pedals or used with keyboards. I am selling it to organize my equipment. Only the main unit, no outer box or instruction manual. Please understand that this is a used item. The following is from the manufacturer's website: A new standard for tough and compact volume pedals. The FV-30H/FV-30L are space-saving volume pedals that are ideal for incorporation into pedalboard systems where space is at a premium. The robust body, made of aluminum die-cast, can withstand harsh tours and intense stage performances. It is designed to smoothly convey the subtle nuances of the player. Even with its compact size, it retains the traditional BOSS reliability and durability. This is a pro-spec model that you can use for a long time. Manufacturer: BOSS