Preshape circuit.Valve drive circuit.12-band classic graphic equalizer.Dual-band Compressor with separate controls for each Hi and Lo bands.Effects Loop with hi-pass/lo-pass/full range outputs, Left/Right/Mono returns, Series/Parallel switch and Level control.Output Mute switch, active on all outputs except Tuner Out.Electronically balanced XLR DI outputs for Pre Eq and Post Preamp Left & Right.Left and Right Line outputs.MOSFET technology 2 x 500 Watts (4 Ohms) output stage.Footswitch allowing control of Preshape, Valve drive, Graphic EQ, Compressor, Effects Loop and Output Mute.Original classy black pimple™ covering.Metal handles and protective corners.Dimensions (HxWxD): 6.2'' (157mm) x 19.3'' (491mm) x 17.1'' (435mm)Weight: 48.4lbs (22kg)