JL Audio JD400/4

4-Channel Class-D Amplifier 400 Watts Power Rating: RMS (14.4v): 4 Ohm: 75 watts x 4 ch. 2 Ohm: 100 watts x 4 ch. 4 Ohm Bridged: 200 watts x 2 ch. RMS (12.5v): 4 Ohm: 60 watts x 4 ch. 2 Ohm: 90 watts x 4 ch. 4 Ohm Bridged: 180 watts x 2 ch. Frequency Response: 12Hz - 22,000Hz High-Pass Filter (12dB/Oct): 50Hz - 500Hz Low-Pass Filter (12dB/Oct): 50Hz - 500Hz 2 or 4 Channel Input Switch NexD Switching Technology Automatic Turn-On Dual-Range Differential Balanced Inputs LED Clipping Indicator Dimensions: 2.1" H x 9.5" W x 7.5" D 1-Year Dynamic Autosound Warranty