SpecificationsPower Output: RMS Power at 14.4 Volt Power Supplv@ < .1% THO-------------EA2000-------------4 n @ 20 Hz to 20 KHz Stereo4 n @ 20 Hz to 20 KHz Bridged4 n @ 20 Hz to 20 KHz Stereo ( CEA 2006 ) <1 % THO60WX2175W X 1-------------EA4000-------------4 n @ 20 Hz to 20 KHz Stereo4 n @ 20 Hz to 20 KHz Bridged4 n @ 20 Hz to 20 KHz Stereo ( CEA 2006 ) <1 % THOMax Power Output: Peak Music Power at 14.4 Volt Power Supplv75WX4150W X2-------------EA2000-------------4 n Stereo @ 1 KHz4 n Bridged @ 1 KHz90WX2225W X 1-------------EA4000-------------4 n Stereo @ 1 KHz4 n Bridged @ 1 KHzInput SensitivityHigh Pass Frequency Selection Variablelow Pass Frequency Selection VariableBass BoostSubsonic Filter100WX4175WX2200mV ... 8V30 Hz ... 500 Hz50 Hz ... 500 Hz0- 8dB @45 Hz18dB / octave @ 20 HzEA2000 30AmpsEA4000 60AmpsSignal to Noise ( CEA 2006 )Frequency ResponseChannel SeparationDamping FactorQuiescent Current ( Idle Current)Maximum CurrentAmp Protect Temperature (Heat Sink)20Hz - 20KHzEIA / IHF> 100 dB+0, -.5 dB< 70 dB> 50 dB:: 1 Amp90C- 16 -