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JL Audio 4Ch Class D Marine Amplifier, 400W

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JL Audio 4 Channel Class D Full Range Marine Amplifier - 400W
Catalog Number 4987140

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$499.99/ EA
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10.00 LB

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JL Audio 4 Channel Class D Full Range Marine Amplifier - 400W

This tiny amplifier packs a serious full-range punch, delivering a staggering 100 watts to each of its four channels into 2 Ω (14.4V, 1% THD). The breakthrough that makes this much power possible in such a small chassis JL Audio's NexD ultra-high-speed switching design, which allows for full bandwidth Class D operation with extremely low distortion and outstanding efficiency. Use the M400/4 in combination with JL Audio's M600/1 monoblock to build a 1000 W amplification system to power four satellites and a subwoofer and fit the whole thing under a seat. Or, use the M400/4 by itself to power two satellites, plus a subwoofer. With M-Series amplifier, the possibilities are endless. The M400/4 includes a 12 dB / octave filter for each channel bank, which can be configured as a low-pass or high-pass filter and offers continuously variable cutoff frequency selection from 50-500 Hz.

This marine amplifier features white and gray powder-coat finishes, a gasketed cover for the controls and stainless steel hardware for durability in the marine environment.


Rated Power 14.4 V Stereo75W RMS x 4 @ 4 ohms
100W RMS x 4 @ 2ohms
Rated Power 14.4 V Bridged 200W RMS x 2 @ 4 ohms
Rated Power 12.5 V Stereo60W RMS x 4 @ 4 ohms
90W RMS x 4 @ 2 ohms
Rated Power 12.5 V Bridged180W RMS x 2 @ 4 ohms
THD at Rated Power<1% THD, 20 Hz - 20 kHz
S/N Ratio>84 dB referred to 1W
(A-weighted, 20 Hz-20 kHz noise bandwidth)
Frequency Response12 Hz - 22 kHz (+0, -1dB)
Input Range100mV - 4V RMS
Dimensions (L x W x H)7.09 in. x 8.52 in. x 2.05 in.
180 mm x 216 mm x 52mm



 Warning: This product MAY expose you to chemicals, which are known to the State of California to cause cancer, birth defects and/or other reproductive harm. For more information go to