UpBright New Global AC/DC Adapter Replacement for Roland AC-33 AC-33-RW AC33 AC33RW AC-40 AC40 AMP Acoustic Chorus Guitar Chorus Combo Amplifier Amp DC13V 13V - 14V 4A Power Supply Cord Charger PSU World Wide Input Voltage 100-240VAC 50/60Hz. OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection). Tested Units. In Great Working Condition. UpBright 30 days money back guarantee. 1 full year service warranty. UpBright NEW Global AC / DC Adapter Replacement For Roland AC-33 AC-33-RW AC33 AC33RW AC-40 AC40 AMP Acoustic Chorus Guitar Chorus Combo Amplifier Amp DC13V 4000mA 13.0V 13VDC 13V - 14V 4A Switching Power Supply Cord Cable Battery Charger Mains PSU