Samson SX1800 Power Amplifier Professional Class AB Power Amplifier 400 watts per side @ 8 ohms, 600 watts per side @ 4 ohms, 1200 watts @ 8 ohms in bridged mono 5-way Binding Post and Speakon Speaker Outputs, XLR and TRS Input connections Signal, Peak, and Protection Circuit Indicators Dual Variable-speed Fan Cooling System, Dual Rack Space Design