Rockville RXM-F3 1600 Watt Peak/800w RMS Marine/Boat 4 Channel Amplifier+Amp Kit 1200 Watt Peak/600w RMS Marine Class D Mono Block Amplifier. Fully Adjustable 12dB Bass Equalizer. 2 Ohm Stable Stereo, 4 Ohm Mono Bridgeable, 3 Channel Mixed-Mono Capable 2 CH / 4 CH Input Mode Switch. RCA Preamp Line Output, ELNA Brand Audiophile Capacitors, 8 Volt Preamp Circuitry, Status Mode LED Indicator,Full IC-Controlled Protection Circuitry 4AWG Guage Waterproof Marine/Boat Amplifier Wire Installation Kit. 4 4 Gauge High Current, Low Impedance, Light Blue, Flexible Ground Cable, 25 16 Gauge 100% Tinned-OFC, White, Non-Transparent Resin PVC, Flat Speaker Cable 1PC Silver Mini-ANL Fuse Holder  Clear Shell and Clear Blue Bottom Bracket with Blue Waterproof Ring. 1PC 60A Mini-ANL Fuse, 2PCS Ring Terminals, 2PCS Spade Terminals. 20 4 Gauge High Current, Low Impedance, Clear Flexible Power Cable with 3 Black Poly Woven Mesh to better resist chemicals in the battery compartment Rockville RMWK4 4AWG Guage Waterbrroof Marine/Boat Ambrlifier Wire Installation Kit. 25 Translucent, Twisted Pair, High Quality, Tinned-CCA Flexible PVC RCA Cable. 20 4 Gauge High Current, Low Imbredance, Clear Flexible Power Cable with 3 Black Poly Woven Mesh to better resist chemicals in the battery combrartment. 4 4 Gauge High Current, Low Imbredance, Light Blue, Flexible Ground Cable. 25 16 Gauge 100% Tinned-OFC, White, Non-Transbrarent Resin PVC, Flat Sbreaker Cable. (1) Rockville RXM-F3 1600 Watt Peak/800w RMS Marine/Boat 4 Channel Amplifier (1) Rockville RMWK4 4 AWG Waterproof Marine/Boat Amplifier Installation Wire Kit (2) Rockville MRCA20 20 Foot Twisted Pair Marine RCA Cables Rockville RXM-F3 1600 Watt Peak/800w RMS Marine Class D Mono Block Amplifier <span class="a-text-bold">CEA Compliant Power Ratings:</span><br> .....65 Watts RMS x 4 Channel @4 Ohms and 1% THD+N<br> .....85 Watts x 4 @ 2 Ohms &lt; 1% THD<br> .....2 x 200 Watts bridged @ 4 Ohms &lt; 1% THD <span class="a-text-bold">RMS Power Ratings:</span><br> .....800 Watts (4 x 200 Watts RMS) @ 2 Ohms<br> .....800 Watts (2 x 400 Watts RMS) @ 4 Ohm Bridged<br> .....500 Watts (4 x 125 Watts RMS) @ 4 Ohms <span class="a-text-bold">Peak Power: </span><br> .....1600 Watts (2 x 800 @ 2 Ohms or 1 x 1600 @ 4 Ohms) High-Speed MOSFET Power Supply Studio-Grade Bipolar Output Stage Transistors Fully Adjustable 12dB / Octave Crossover with Differential Circuitry CH3 &amp; CH4 Low Pass 50Hz - 3KHz CH3 &amp; CH4 High Pass 15Hz - 1KHz CH1 &amp; CH2 High Pass 50Hz - 300Hz, 500Hz - 3Khz (x10) Crossover Band-Pass Control Fully Adjustable 12dB Bass Equalizer 2 Ohm Stable Stereo 4 Ohm Mono Bridgeable 3 Channel Mixed-Mono Capable Full IC-Controlled Protection Circuitry Mute and Delay Soft Start System High Level Input with Smart Auto Turn-On Full IC-Controlled Protection Circuitry 2 CH / 4 CH Input Mode Switch RCA Preamp Line Output ELNA Brand Audiophile Capacitors 8 Volt Preamp Circuitry Status Mode LED Indicator Minimum THD at Rated Power: &lt;0.05% Frequency Response: 10Hz - 40KHz Sensitivity: 100dB @ 1w / 1m Damping Factor: &gt; 200 @ 100Hz Three 20 Amp Maxi Fuses Dimensions: ( W x H x L ) 8.6 x 2 x 13.7 Rockville RMWK4 4AWG Guage Waterproof Marine/Boat Amplifier Wire Installation Kit 25 Translucent, Twisted Pair, High Quality, Tinned-CCA Flexible PVC RCA Cable 20 4 Gauge High Current, Low Impedance, Clear Flexible Power Cable with 3 Black Poly Woven Mesh to better resist chemicals in the battery compartment 4 4 Gauge High Current, Low Impedance, Light Blue, Flexible Ground Cable 25 16 Gauge 100% Tinned-OFC, White, Non-Transparent Resin PVC, Flat Speaker Cable 20 Blue Remote Wire 1PC Silver Mini-ANL Fuse Holder  Clear Shell and Clear Blue Bottom Bracket with Blue Waterproof Ring 1PC 60A Mini-ANL Fuse 2PCS Ring Terminals 2PCS Spade Terminals 5PCS Speaker Cable Terminals 1PC Washer 10PCS White Cable Ties Rockville MRCA20 RCA Interconnect Cable 20 Ultra-Flexible PVC Shield Twisted Pair Premium Audiophile Marine RCA Interconnect Cable High Performance Water Proof RCA Plugs Tinned Copper Strands for Sonic Purity Outstanding Noise Rejection, Accuracy, and Frequency Response