Description Neo M4 4 Channel Class D Amplifier Features: 400 Watts Max* 100wattsx4 @2ohm / 50wattsx4@4ohm@14.4v Class D full range circuitry Power Supply Input Voltage 12VDC to 14.8VDC Audiophile grade connectors Marine grade conformal coated on PCB THD (100Hz @ 1Ω) 0.04% Bandwidth (-3dB) 18-150Hz Damping factor (100Hz @ 4Ω) 126 S/N Ratio (as weighted @ 1Volt) 99dB Input sensitivity: 0.20MV – 6V