Tri-stage protection covers thermal, over-current and short circuitsOn-board peq (punch equalization) with 18 db. of boost45hz2/4 channel switch, 4 Gauge power/ground connectors.Frequency Response20Hz to 20kHz /-1dB12Db/octave crossoverTop mounted controls
New Rockford Fosgate Prime 400 Watt Class D 4 channel Amplifier
Brand: Rockford Fosgate, Model: R400-4D, Color: BLACK, Size: 400 Watts 4-Channel