OMNIHIL AC/DC Power Adapter Compatible with Roland Boss A30 A-33 A-37 AX-1 AX-7 Switching Cable PS 8 Foot Long Total Cord Length (Competitors' only 3-6.5 FT Long) Adapter Rating: World Wide 100V ~ 240V 50/60Hz High Quality PSU/Transformer / All products are tested to exceed/meet standard specification OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection)