Power Amplifier - 4000 Watts - Model Number: MBG-4000, Power Handling 2 x 500 Watts @ 8 Ohms, 2 x 1000 Watts @ 4 Ohms, Momentary Peak Output 4000 Watts @ 4 Ohm Bridge. , Technical Specs Input level: 0 dB, Input Resistance: 20K ohm, Rising Speed: 45 v/us (BTL-MONO 90v/us), Distortion for adjustment: 95 dB, Frequency Response: 20Hz-20K Hz, General Harmonic Wave Distortion: 20Hz-20K Hz . , Front of Amplifier Channel A and B volume controls, Clip maximum level indicator, Signal indicator, Power indicator, Power red when started. Rear of Amplifier Channel A and B signal input (XLR & 1/4" jack connectors), Channel A and B power output (Speakon & binding post connectors), Stereo/Bridge Mono switch, Lift/Ground switch, Fuse: 10A, AC input: 110V, 50-60 Hz, Dual cooling fan. Dimensions: 2 Space / Fits Standard 19" rack cases, Weight: 18.5 lbs., Brand New, One Year Warranty. Our MBG amplifiers are a step up from our LE series. We have still tried to keep your budget in mind without compromising quality. These MBG amps pack a lot of juice in a cost effective amplifier. These amps are easily capable of pushing two 18" subwoofer cabinets or a pair of dual 15" speakers.