This 9V DC power adapter is designed for a guitar effects pedalboard. A single output supplies a maximum of 1700mA to power a fully loaded pedalboard. The slim design frees up space on a power strip by occupying one outlet. For international use, the AC power input has variable voltage between 115v/230v (50-60hz). The power supply works with an optional female-to-male daisy chain adapter cable for connecting multiple pedals. And the 8-foot cable can reach far away outlets.