6.3mm Jack or RCA Inputs. Speakon- 6.3mm Jack or 4mm Post Outputs. Fan Cooled. 19″ Rack MountableMains Input: 240v- 50/60Hz Power 4 Ohms: 2 x 500w Max Power 4 Ohms: 2 x 250w RMS Power 8 Ohms: 2 x 160w Dimensions: 482 x 300 x 88mm Weight: 9Kg. Stereo workhorse power amplifier with multiple input and output connection options. Designed for accurate and reliable service for venues- DJs and performers.. ampLIFIER