Model: C266Max Power (2ohm) 1450Wx4=5800W ,Max Power (4ohm) 725Wx4=2900wRMS Power (2ohm) 700Wx4=2800W,RMS Power (4ohm)= 300wx4=1200W .THD: Less than 0.02%Sensitivity: 90dBFrequency Response:20Hz~20KHzOperating Voltage: 12VColour:blackMaterial:metalSize:32x24x4.5CMPackage Contents:1 x 4 Channel Car Amplifier1 x English User Manual