Power supply alternative from Radio Shack 29 April 2022 08:23 If you misplace your power supply and you're near a Radio Shack you can purchase one of their off the shelf supplies. The Prophet '08 Keyboard or Module will operate on a DC voltage range from 13-15 volts DC. It needs a minimum of 600 mAh. Any power supply that provides a DC voltage between 13-15 volts and 600 mAh or more will work. Here are the Radio Shack PSU specs: Radio Shack Power Supply Enercell™ 15V/1000mA AC Adapter Model: 273-332 | Catalog #: 273-332 $29.99 Enercell™ Adaptaplug™ M Model: Adaptaplug M | Catalog #: 273-344 $6.99 PSU plug specs: OD 5.5mm, ID 2.1mm, length 9.5mm Related articles Power supply alternative from Radio Shack PE Conversion Instructional Video- Prophet '08 Keyboard REV2 Keyboard Troubleshooting I hear the oscillators very faintly if I turn volume up and no notes are being triggered How to load the Prophet '08 Factory Programs