Brand: Stage Right by Monoprice. MPN: 611690. Power your guitar effects pedal with this Stage Right 9V Power Supply for Guitar Pedals from Monoprice! This AC adapter is intended for use with the Monoprice guitar effects pedals, as well as guitar effects pedals from other manufacturers. It boasts a cable length of 5 feet, which means you don't need to have an unsightly power strip next to your pedal board. It has the following physical and electrical characteristics: Tip negative. Input power of 100~240 VAC, 50/60 Hz, 0.2A. Output power of 9 VDC, 500mA. DC connector barrel/pin diameter is 5.5mm/2.1mm.