power supply complete with separate adapter for humfree operation end cables is the most reliable and consistent way to power your effects. The DC Brick will drive 10 pedals (7x9V + 3x18V)from the same source! More than a power supply, this box is a power conditioner as well. Unlike aging batteries, the Brick supplies a predictable voltage at all times, keeping your effects consistent from show to show. Its Foldback Current Limiting Circuit provides ultimate protection against power shorts and overloads. Even at full load, you?ll enjoy the quiet and cool operation of a fully regulated power supply. But since battery-powered effects rarely exceed 30 milliamps each, you?re not likely to use anywhere near the Brick?s capacity of 1000 milliamps output!