JL Audio XDM400/4 4-Channel Class D Full-Range Car and Marine Amplifier 400W

The JL Audio XDM400/4 4-Channel Class D amplifier delivers full-range power in a compact design, producing 100 W x 4 @ 2 Ω to drive satellite speakers or small component systems. Using JL Audio’s NexD™ high-speed switching technology, it achieves exceptional efficiency and low distortion, making it ideal for car, boat, or marine installations. Its marine-grade materials and dual-mode input filter ensure noise-free operation, while automatic turn-on via signal or DC-offset sensing simplifies integration into factory systems. Pair with an XDM600/1 monoblock to create a 1000 W system powering four satellites and a subwoofer in tight spaces. This versatile amplifier includes a 12 dB/octave filter per channel bank, configurable as high-pass or low-pass, with adjustable cutoff from 50–500 Hz. Optional HD-RLC or MHD-RLC remote level controllers allow channel-level adjustments directly from the driver’s seat or cockpit. Finished in sleek black powder-coat with a gasketed removable top cover, all controls are protected and easily accessible. Measuring 216 x 52 x 180 mm and weighing 2.86 kg, the XDM400/4 offers high-quality, flexible amplification for compact high-performance audio setups.