JL Audio MX-Series Amplifiers – Weatherproof amplification No matter how you like to take to the water, MX amplifiers are ready to power your soundtrack with great JL Audio sound. Engineered for versatile applications, MX amplifiers employ our ultra-efficient NexD™ switching technologies to generate loads of high-fidelity sound, without straining small charging systems. Housed in compact, cast-aluminum chassis, MX amps are water-resistant (IPX6 rated) and can go where conventional 12V amplifiers wouldn’t dare. Crossover filters and signal processing features are standard, allowing for easy set-up and system flexibility. Monoblock models include subwoofer level control capability using the optional M-RBC-1 (sold separately).