Features â—¦ 4 Channel Class D Circuitryâ—¦ ACT - Adaptive Crossover Technologyâ—¦ High efficiency Full Range Class D Technologyâ—¦ Direct Connect Speaker Terminalsâ—¦ Large Gauge Power Wire Inputsâ—¦ APC - Audio Protection Circuitâ—¦ SESI - Signal evaluation status indicator Specifications @14.4 Volts - 1% THD 4 x 200 Watts @ 4 Ohm 4 x 300 Watts @ 2 Ohm 2 x 400 Watts @ 4 Ohm (Bridged) Working Voltage: 10 - 16 Volts Frequency Response: 10Hz - 20KHz Signal to Noise Ratio: < 95dB Damping Factor @ 4 Ohm > 101/1K