The JL Audio MV600/1 is a compact, high-performance 600W monoblock subwoofer amplifier engineered specifically for marine use. Built with a specialized low-frequency version of JL Audios NexD2 switching technology, it delivers 400W at 4 ohms or 600W at 2 ohms, ensuring powerful, efficient bass performance on the water. Designed to pair with full-range MVi amplifiers, the MV600/1 receives its signal and processing directly from those units, and includes only a basic input sensitivity control. Like other MVi models, configuration is handled via the JL Audio TüN software on a compatible PC, tablet, or smartphone. Housed in a marine-grade cast alloy chassis with a powder-coated finish and corrosion-resistant hardware, the MV600/1 is built to perform and endure in marine environments.600 W x 1 @ 2 O / 400 W x 1 @ 4 O - 14.4VThe amplifier includes a power Connector (for 4 AWG wire), a Subwoofer Output Harness, 6 ft A/B USB CableSimple Setup via PC, Tablet, or Smartphone• TüN Software delivers fast and easy setup, at your fingertips. Make all adjustments with a clear interface. Free TüN software is available for computers and most handheld devices.2nd-Gen NexD2 Switching Amplifier Technology• Advanced, high-speed switching technology delivers superb low-frequency power and efficiency.• The latest generation of DirectFET MOSFET Output Devices.• Specially optimized for subwoofer applications. Ultra-Versatile Analog and Digital Inputs/Outputs• Differential-Balanced Analog Inputs accept a wide range of signal levels (up to 8V RMS), offering outstanding noise rejection for clean, clear audio.• Analog, Pass-Through Pre-Outs (4V RMS)JLid System Command and Control with Networking Capabilities• Proprietary JL Audio protocol provides control interface and all communication for VXi amplifiers and optional JLid accessories, including:• VXi-BTC Bluetooth Communicator: Adds wireless connectivity for amplifier configuration from a compatible iOS or Android device.• M-DRC-50 or DRC Controllers: Wired remotes offer preset selection and adjustments of levels, fader, and balance from the helm or drivers seat. (Connectivity/functionality varies by model.)• MVi-HUB JLid-COMM and Network Hub: Provides network connectivity for up to six MVi amplifiers (one master and five slave amplifiers) for full-system DRC control and Preset selection. Easy setup at your fingertips with free TüN software Unique design adjusts operation to avoid thermal events Exceeds international standards for salt fog & UV exposure | JL Audio MVI Series 600w Monoblock Subwoofer Amplifier in Blue