Backline 600BL; 300W (4 ohms); Convection cooling; 1/4” jack, Clip LED, -10dB Pad, Mute Switch and Mute LED input section; B LED, Gain and Level Controls high gain, Level Control low gain, Adjustable Contour voicing filters; Active 4 band EQ; Boost and Master output; XLR, Ground Lift and Pre/Post Switches direct output; Effects loop with tuner out and mute patching; Two 1/4” speake output jacks.