This compact DC adapter replaces the 9v battery for the Freedom One receiver, and will also work for just about any guitar effect pedal. The body of the unit is very compact (1.5 x 2.25 inches), allowing for multiple placements on a typical power strip. FEATURES: Compatible with most effect pedals! 9-Volt DC Output. 0.5 Amp (500 milliamp) power output capacity to handle just about any pedal. Center Ground, Case Positive (Boss/Korg Standard). 100-240v AC input compatibility – use it around the world! Super long 6ft cord.