Pyle-Pro PDG4000 Blue Rock 4000 Watt Professional Stereo Power Amplifier (19-inch Rack Mount) 4000 Watts Peak Power - Bridgeable Channels Blue Numerical Digital Sensitivity Input Meter - 2 Power Output Digital Vu Meters - 2 Multi Colored Led Output Meters Inputs: Balanced XLR, 1/4'', RCA - Outputs: Speakon, Banana Binding Post, 1/4'' Cooling Fan - 2 Volume Output Controls 110-220v Switchable - Dimensions: 14.7''D x 19''W x 7''H