UpBright 9V AC/DC Adapter Replacement For Cakewalk By Roland A-300 PRO A-500 PRO Keyboard Controller Combo Amp AX-Synth AxSynth Synthesizer Boss Micro Cube Street Guitar Amplifier 9VDC Power Supply 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 9V AC/DC Adapter Replacement For Cakewalk By Roland A-300 PRO A-500 PRO Keyboard Controller Roland Micro Cube Bass RX Bass Combo Amp Roland AX-Synth AxSynth Synthesizer Boss Roland Cube Street Battery Powered Guitar Amplifier 9VDC DC9V 9.0V 9 Volts Power Supply Cord Cable PS Wall Home Charger Mains PSU