DCD-PWR Cobalt Alpha Power 5 amp DC/DCC Power SupplyCobalt Alpha Power 18V, 5 amp DC or DCC power supply supplied with UK power supply provided Cobalt Alpha Power Smooth, well regulated power for perfect performance! Its not commonly understood, but even the digital systems that show the use of AC power supplies in their manuals actually run on DC internally and what you may also not know is that while AC power supplies may be lower cost, they also give ZERO protection from inevitable voltage surges