Lanzar OPTI200X4 1600 Watt 4 Channel High Power MOSFET Amplifier 125 Watts x 4 RMS Power into 4 Ohms 400 Watts x 4 Max Power into 4 Ohms 800 Watts x 2 Power Bridged 200 Watts RMS Power into 2 Ohms PWM (Pulse-Width-Modulated) System Electronic Crossover Network Bass Boost Circuit Bridgeable at 4 Ohms 2 Ohm Stable Tri-Mode Capable Double Side Epoxy PCB Circuit Board Nickel Plated RCA Inputs Line Outs for Left and Right Channel Low Pass Filter Controls High Pass Filter Controls Subwoofer Remote Level Control Power and Protection LED Indicators Soft Turn On/Off Variable High Pass Filter: 50Hz~750Hz, 24dB/Octave Variable Low Pass Filter: 50Hz~120Hz, 24dB/Octave Variable Bass Boost: 0 - 18dB THD: 0.04% S/N Ratio: 100dB Channel Separation: >60dB Frequency Response: 10Hz - 35kHz (+/-1dB) Dimensions: 10.08"W x 2.12"D x 16.73"L Fuse Rating: 30A x 3