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Features: MB QUART NA2 400.2 400w 2-Channel Amplifier Amp For Polaris/ATV/UTV/RZR/CART. Operation Mode: Two channel operation - Flexible installation allows this amplifier to run in two channel or bridged mono mode. Crossover / Signal Shaping: Switched FULL / LPF / HPF - Complete control of amplifier signal, essential when using two or more amplifiers. Class / Topology: Full Range Class D - Highly efficient circuit topology which helps the amplifer develop a lot of power in a very small heatsink. Output Devices Technology: PWM MOSFET Power Supply - Stable power through the PC board with minimal heat generation. Heat Sink: Aluminum - Quickly dissapates heat to allow the amplifer to run lower impedance for longer duration. Power Supply: Simpatico Coil Design - The dual coil Pulse Width Modulated power supply keeps voltage constant through the Ultra-Fi output devices. Output Connections: Quick Dissconect Wires, RCA Connections - Quickly remove amplifer when you are putting machine up for the winter of as a security precaution. Connections Type: Gold-plated connections - Gold-plated power, ground, speaker and RCA corrosion resistant connections. Yes - Water resistant for durability in any environment. Specifications: Class: Full Range Class D. Variable Voltage: 0.2V~9V. Signal to Noise Ratio: >90dB. Frequency Response: 20Hz-20kHz. Crossover Type: Electronic 12dB Per Octave. Low Pass Crossover: Switch Low Pass 300 Hz. Bass Boost: 0-12dB@45Hz. Subsonic Filter: 60Hz. Power @ 2-Ohms: 2 x 200W. Power @ 4-Ohms: 2 x 100W. Total Channels: 2. Audio Inputs: RCA. Power Terminal 12v/GND: Molex 10 ga. Certifications: Marine & Powersports. Dimensions: 3.70 X 5.51 X 1.77 in (9.4 X 14.0 X 4.5 cm). Weight: 2.12 lbs (0.96 kg)Rockville RWB80B Pair of 8" Black WakeBoard Tower Speakers Totaling 600 Watts (300 Watts per speaker).Includes long screws that accommodate Jeep Wrangler and any roll bar Includes Stainless mounting hardware that wont rust or corrode