ES-PRO 70.4High end Mini class D amplifierMini Size easy for installing4Ohm stable in sterio modeTotal Harmonic distortion:0.5%Military grade PCBDirect Short,Thermal&Overload Circuit Protection1.Mini class D Power amplifier TDA8920CTH IC2.RMS 4ohm:4CHX70W3.RMS 2ohm:4*130W4.Bridge 4ohm:2*160W5.Di..