Marathon MA-5050 PRO Series Amplifier Indicators: Power: 1 x Blue LED, Signal: 2 x Green LED, Clip : 2 x Red LED, Protect: 1 x Red LED Power Supply Voltage: Voltage selectable 110 / 220V AC Power Supply Voltage: Voltage selectable: 110V \ 220V AC Power supply fuse (250): 20A Dimensions: 19 W x 18.7 L x 5 H inches Net Weight: 77 lbs.