TRIMODE OPERATION; BRIDGEABLE; REMOTE SUBWOOFER LEVEL CONTROL; LINE & SPEAKER LEVEL INPUTS;* 0 TO +18 DB VARIABLE BASS BOOST; MOSFET POWER SUPPLY; VARIABLE LOW & HIGH PASS CROSSOVERS; INPUT GAIN CONTROL; INPUT SENSITIVITY SELECTOR; POWER & PROTECTION LEDS; 250W X 4 MAX @ 2_;* 100W X 4 RMS @ 4_; DIM: 2.31"H X 11"W X 13.25"L