POWER ACOUSTIK REACT4 900 CLASS D2 REACTOR SERIES POWER ACOUSTIK REACT4900 POWER ACOUSTIK REACT4 900 CLASS D2 REACTOR SERIES AMPLIFIER 4 CHANNEL 900 WATT POWER ACOUSTIK REACT4900 POWER ACOUSTIK REACT4 900 CLASS D2 REACTOR SERIES AMPLIFIER 4 CHANNEL 900 WATT 4 CHANNEL 4 RMS 70W X 4 2 RMS 100W X 4 MAX 900W PWM POWER SUPPLY 3 STAGE PROTECTION CIRCUIT SMD TECHNOLOGY MIL SPEC FIBERGLASS CIRCUIT BOARD TRUE DIGITAL SWITCHING HIGH RAIL VOLTAGE 2 STABLE COMPACT CHASSIS FULL MOSFET CIRCUITRY HIGH LEVEL INPUT LINE OUTPUT BASS BOOST 45 HZ 6 DB OR 12 DB 18 DB CROSSOVER CENTERED AT 80 HZ