Features 4 Channel Full Range Class AB Circuitry 2Ω Stereo load Capability Low level RCA inputs Variable Crossover: HPF/LPF/Full Bridgeable outputs @ 4Ω load Compatible with any 4/2Ω Loudspeaker High Efficiency Mosfet Design Q-Sink Heat Management System Specifications 4 X 125 Watts @ 4Ω 4 x 250 Watts @ 2Ω 2 x 500 Watts @ 4Ω (Bridged) Bandwidth : 18Hz - 22KHz Input Sensitivity: 200Mv – 8V Crossover filter slope in Stereo: 12dB Channel 1-2 HP filter range: 32 Hz - 2 KHz Channel 3-4 HP filter rang