Pyle Marine Amplifier Receiver Subwoofer - 8&rdquo; Low-Profile Slim Waterproof Wireless Audio for Boat Stereo Speaker & Other Watercraft - 600 Watt Power, LED  Indicator, RCA Inputs - PLMRBS8 LOW PROFILE: Pyles PLMRBS8 is engineered as an 8-inch marine amplifier receiver that powers up your speaker and is universally compatible. It is designed to be low profile and super slim for easy installation WATERPROOF & WEATHERPROOF: The audio amplifier is waterproof or marine grade for boat and other aquatic base vehicles. Its constructed with durable housing to combat weather corrosion for long term us SHORT PROTECTION: This amplified subwoofer is built with a heavy duty thermal overload speaker short protection. Theres even a Red and Green LED light power indicator to prevent short circuit conditions POWERFUL 600 WATT: The amplifier receiver has a power of 600 watt max with a Fuse of 2x15A. Tp save energy, it features a soft delay remote turn-on. The exact dimension is 14.5'' X9.5'' X 3'' and it weighs 10.5lbs RCA STEREO INPUT: The amp is built with premium RCA inputs in low and high levels. It also has a phase shift switch of 0 or 180, 0.2V-3V adjustable input sensitivity, 0 to +12dB variable bass boost (45Hz) and low pass filter of 50-150 Hz Active 8-inch subwoofer with 600 watts peak power handling and space-saving design Accepts both low-level RCA and high-level speaker line inputs with adjustable 0.2V-3V sensitivity Remote bass boost level control allows adjustment from 0 to +12 dB at 45Hz Thermal, short, and overload protection circuits protect subwoofer and your vehicle Ultra-slim at under 3 inches deep--perfect for under-seat installations