Full Featured FET Preamp Design300W @ 8 ohms; 500W @ 4 ohmsClass D Power Amp and SMPSGain and Volume Controls for a Wide Range of Gain SettingsL.F. and H.F., Shelving EQ NetworksParametric Midrange FilterContour Tone-shaping NetworkInput MuteXLR Direct Output w/Ground LiftFan CoolingMulti-layer Plywood ConstructionHeavy-duty Molded Strap HandleHeavy-duty Metal Perforated Grille3 Way Tweeter Level Control