2-Channel Class AB Car Ampilfier Load 4 Ohm: 100W RMS x 2load 2 Ohm: 190W RMS x 2Btl 4 Ohm: 250W RMS x 1Signal to noise ratio: 90dBFrequency response: 20-20KHzTHD: 0.01%Dimension(L×W×H):296×273×51mm