dBu is an absolute measurement. 0dBu is referenced to 0.775 volts RMS
Mains Input
Input Voltage: 100-240V AC
Input Frequency Range: 50-60Hz
Power Output
Output Voltage: 22-30V DC
Output Current: <=400mA
Output Connectors: (3) XLR-3M
Front Panel Connectors and Indicators
Input Connector: (1) 2.1mm Co-axial connector
Indicators: (2) LEDs: red (overload), green (normal)