The JL Audio XDM400/4 delivers powerful, clean sound in an ultra-compact design, generating 100 watts x 4 channels at 2 ohms or 75 watts x 4 at 4 ohms (14.4V, 1% THD). Whether you're upgrading a car or boat system, this full-range Class D amplifier uses NexD high-speed switching technology to deliver impressive performance with minimal distortion and high efficiency. Built with marine-grade components for maximum durability, the XDM400/4 includes a dual-mode input filter for noise-free performance and automatic turn-on capability for simple factory integration. Each channel pair includes a configurable 12 dB/octave filter (high-pass or low-pass) with adjustable cutoff from 50â500 Hz, allowing for fine-tuned system control. Use it alone to power a 3-channel system (satellites + subwoofer), or pair it with the XDM600/1 for a full-range 5-channel powerhouse all while fitting neatly under a seat or deck. Compact, versatile, and built to perform on the road or water.• Powerful Output: 100W x 4 @ 2O / 75W x 4 @ 4O• NexD Class D Technology: High efficiency with low heat and distortion• Compact & Durable: Marine-grade build for car or boat installations• Flexible Configuration: Adjustable high/low-pass filters per channel bank• Remote Level Ready: Compatible with HD-RLC or MHD-RLC remote level controls (sold separately)• Factory Integration Friendly: Dual-mode input filter and automatic turn-on support• Protected Controls: Gasketed, removable cover with sleek black finish Marine-Grade Durability Built for both car & marine environments Efficient Class D Design Runs cool with low distortion Flexible Filtering Adjustable high/low-pass filters (50500 Hz) for precise tuning | JL Audio XDM Series 400w 4 Channel Amplifier in Black