HIGH-POWER PERFORMANCE: 1600w peak / 400w Dyno-Certified RMS across 4 channels delivers crisp, clear sound for marine audio systems. BUILT FOR MARINE USE: Features conformal-coated PCB, rustproof aluminum heat sink, and stainless steel hardware to resist saltwater, humidity, and corrosion. ADVANCED AUDIO TUNING: Fully adjustable 12dB/octave crossover with high pass, low pass, bandpass, and subsonic filter options for precise audio control. MARINE PA SYSTEM INCLUDED: Built-in public address functionality with included PA mic and talk-over feature lets you speak clearly over music on the water. COMPACT AND DURABLE: Measures 13.39" x 8.66" x 2.17", with IC-controlled protection circuitry, digital voltage display, and bridgeable channels for flexible installs. The Rockville KRYPTON MF3 1600w Peak 4 Channel Marine Amplifier is engineered for powerful sound and rugged durability in marine environments. With 400w Dyno-Certified RMS output and 1600w peak, it delivers dynamic, high-fidelity audio across 4 channels-perfect for full-range, midrange, or subwoofer setups. Built for life on the water, the MF3 features a conformal-coated PCB for moisture resistance, rustproof aluminum and stainless steel construction, and a high-speed MOSFET power supply. It includes a PA microphone and built-in marine public address system with talk-over function, letting your voice cut through the music for announcements or instructions. Tune your sound precisely with a 12dB/octave crossover supporting bandpass, subsonic, and high/low-pass filters. Additional features include a digital voltage display, IC-controlled safety circuitry, and bridgeable channels. Measuring 13.39" x 8.66" x 2.17", it's compact enough for tight marine installs while providing reliable performance season after season.