Key Features Aluminum Die Cast Heat Sink Power Mos-Fet Switching Power Supply 500 Watts Max Output Power 2Ω Load Capability 4 Channel Or 2 Channel + Sub Setup Built-In Low-Pass Filter (B-Ch.Only) Built-In High-Pass Filter (A-Ch.Only) Signal Sensing Turn-On Speaker Level Input Amplifier Features Load Capability 2Ω Stable Maximum Power Output 500W Rated Power Output (4Ω) 40W X 4 (4Ω) Rated Power Output 40W X 2 + 130W X 1 (4Ω) Bridged Power Output (4Ω) 130W X 2 Cea-2006 Compliant Yes Low-Pass Filter Yes High-Pass Fliter Yes Switched Mode Power Supply Yes, With Power Mos-Fet Power Indicator Yes Signal Sensing Turn-On Yes Line In 2 Rca'S Speaker Level Input Yes Die-Cast Aluminium Heat Sink Yes Amplifier-Specifications Maximum Power Output (4Ω) 130W X 4 Rated Power Output (4Ω, 14,4V) 40W X 4 (20Hz ~ 20000Hz, 1%Thd) Rated Power Output (2Ω, 14,4V) 60W X 4 (1000Hz, 1%Thd) Rated Power Output (4Ω, 14,4V) 40W X 2 + 130W X 1 (1%Thd) Rated Power Output (Cea-2006) 40Watts Rms X 4 At 4 Ohms And 1% Thd Low-Pass Filter 50~200Hz (24Db/Oct)(B-Channel) High-Pass Fliter 80Hz (-12Db/Oct) Rca Input Sensitivity 0.2 ~ 5V Speaker Level Input Sensitivity 4 ~ 12V Input Impedance 10KΩ Signal To Noise Ratio 100Db Signal To Noise Ratio (Cea-2006) 80Dba (Reference: 1 Watt Into 4 Ohms) Frequency Response (+0Db, -3Db) 5Hz ~ 50000Hz Operating Voltage 14.4V (11V ～ 16V Allowable) Maximum Current Consumption 18A Dimensions (Wxhxd) 315 X 56 X 200(Mm), Weight 2.1Kg Unit Weight In Individual Package 2.44 Kg.