Lanzar AQA430WT 1,600-Watt 4-Channel Mini Mosfet Marine Amplifier 4 x 300 Watts RMS @ 4 Ohms - Bass Boost Circuit - High Pass Filter Controls - Channel Separation : &gt; 65 dB - Dimension : 1.73"(H) x 6.22"(W) x 8.03"(L) 4 x 600 Watts MAX @ 4 Ohms - Bridgeable at 4 Ohms - Power and Protection LED Indicators - Frequency Response : 20 - 40K Hz 2 x 1200 Watts MAX @ 4 Ohms Bridged - 2 Ohms Stereo Stable - Soft Turn On/Off - HPF Freq. Response : 50 - 500 Hz Bluetooth enabled devices with smart auto switch mode function Electronic Crossover Network Nickel Plated RCA Inputs Adjustable Input Gain Control On All Channels Line Level Signal Output Power and Protection LED Indicators Soft Turn-on/Turn-off THD:60dB