Key Features Signal Sensing Turn-On 1000 Watts Max Output Power 2Ω Load Capability Cooling Fan (2X) Built-In Low-Pass Filter Built-In High-Pass Filter Bass Boost 40Hz (0~+18Db) Blue Illumination Speaker Level Input Amplifier Features Load Capability 2Ω Stable Maximum Power Output 1000W Rated Power Output (4Ω) 170W X 2 (4Ω) Rated Power Output 250W X 2 (2Ω) Bridged Power Output (4Ω) 500W X 1 Cea-2006 Compliant Yes Low-Pass Filter Yes High-Pass Fliter Yes Bass Boost Circuit Yes Switched Mode Power Supply Yes, With Power Mos-Fet Cooling Fan Yes Power Indicator Yes Blue Illumination Yes Signal Sensing Turn-On Yes Protection Function Yes Line In 1 Rca (Gold Plated) Input Selector No Line Out 1 Rca (Gold Plated) Speaker Level Input Yes Single Side Terminals Yes Gold Plated Power & Speaker Terminals Yes Die-Cast Aluminium Heat Sink Yes Removable Coverplate Yes Amplifier-Specifications Maximum Power Output (4Ω) 500W X 2 Rated Power Output (4Ω, 14,4V) 170W X 2 (20Hz ~ 20000Hz, 0.08%Thd) Rated Power Output (2Ω, 14,4V) 250W X 2 (1000Hz, 0.8%Thd) Rated Power Output (4Ω, 14,4V) 500W X 1 (1000Hz, 0.8%Thd) Rated Power Output (Cea-2006) 170Watts Rms X 2 At 4 Ohms And 1% Thd Low-Pass Filter 50~200Hz (24Db/Oct) High-Pass Fliter 50~200Hz (12Db/Oct) Bass Boost Circuit 0~18Db (Variable) Bass Boost Frequency 40Hz Rca Input Sensitivity 0.2 ~ 5V 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 40A Dimensions (Wxhxd) 350 X 59 X 238(Mm), Weight 3.2Kg