2_ STABLE VARIABLE LOW PASS FILTERS 40240 HZ (12 DB PER OCTAVE) VARIABLE BASS BOOST 0 ~ 12 DB AT 45 HZ LOW LEVEL PASS TROUGH RCAS ENCAPSULATED POWER & SPEAKER CONNECTORS PROTECTION CIRCUIT THAT SAFEGUARDS AGAINST SHORT CIRCUITS, DC-OFFSET THERMAL OVERLOAD GREEN OPERATION & RED PROTECTION LEDS INCLUDES REMOTE INPUT LEVEL CONTROL PEAK POWER: 900W NOMINAL OUTPUT POWER: 1X300W 4_ 1X450W 2_