The JL Audio M400/4 is a compact 4-channel Class D marine full-range amplifier designed to deliver clean, efficient power in harsh onboard environments. It’s an ideal choice for driving four marine speakers, or for flexible 3-channel setups (two speakers plus a bridged subwoofer channel) when system space is limited.

• Rated power (14.4V, 1% THD): 75W x 4 @ 4 / 100W x 4 @ 2 / 200W x 2 bridged @ 4
• Minimum speaker load: 2 per channel (stereo) / 4 bridged
• Frequency response: 12 Hz 22 kHz (+0, -1 dB)
• Crossovers: selectable High-Pass or Low-Pass per channel pair, 12 dB/octave, variable 50 Hz
• Technology: JL Audio NexD switching design for high efficiency and low distortion
• Protection: Advanced Rollback Protection helps reduce thermal shutdown events
• Connections: RCA inputs with pass-through preamp outputs for system expansion
• Installation note: 4 AWG power/ground wiring and 40A fused protection are commonly recommended (installer supplied)
• Approx. dimensions: 8.52" W x 7.09" D x 2.05" H

OEM reference: JL Audio M400/4. Supplier: Recmar (Recambios Marinos).

Compatible add-ons (sold separately): JL Audio HD-RLC remote level control for convenient level adjustment, and JL Audio M600/1 monoblock amplifier for dedicated subwoofer power.

Confirm ratings, specification and fitment before ordering especially speaker/subwoofer impedance and bridged wiring configurations.