Rockford Fosgate T400-4

4-Channel Class-AB Amplifier 400W RMS Power Rating: 4 Ohm: 60 watts x 4 ch. 2 Ohm: 100 watts x 4 ch. 4 Ohm Bridged: 200 watts x 2 ch. Frequency Response: 20Hz - 20,000Hz Front Channels High-Pass / Low-Pass Filter (24dB/Octave): 50Hz - 500Hz Rear Channels High-Pass / Low-Pass Filter (24dB/Octave): 50Hz - 500Hz 2/4 Channel Input Switch MOSFET Power Supply MOSFET Output Stage Dynamic Thermal Managment Optional PEQ Remote (sold separately) Dimensions: 2.14" (54.2mm) H x 8.14" (206.8mm) W x 13.66" (346.9mm) D 1-Year Dynamic Autosound Warranty