The Garmin JL Audio MVi 1,000W Monoblock Marine Subwoofer Amplifier ushers in a higher level of marine audio performance with unmatched fidelity and versatility. This Garmin marine amp has state-of-the-art amplifier circuits and built-in tuning capabilities for exceptional sound quality. Innovative, high-speed NexD2 switching technology synchronizes the amplifier's power supply and output channels for top-flight fidelity with ultra-low noise and distortion. TN free JL Audio software makes all setup and audio adjustments easy, right from your computer or most handheld devices, no knobs or switches required. A versatile design lets this Garmin marine amp accept speaker signals without a line-output converter; plus, it also delivers outstanding noise rejection while preventing alternator whine and other noises. Innovative circuit design ensures the amp will never shut down as a result of thermal overload and keeps the music playing even under the most demanding conditions. Tune your sound to your exact preference with the integrated equalizer, delay, crossover signal routing, mixing, and more, making the Garmin JL Audio Marine Amp the smart choice for the best sound on the water. Mfrs. 3-year limited warranty. Unmatched fidelity and versatility High-speed NexD2 switching technology syncs amp power supply and output channels for max fidelity and minimal noise TN free JL Audio software for easy setup and audio adjustments Outstanding noise rejection Innovative circuit design prevents shutdown as a result of thermal overload Integrated equalizer, delay, crossover signal routing, mixing, and more