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Sorry! JL Audio - XD400/4 - 4-Channel Class D Full-Range Amplifier [400 W] is sold out.

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JL Audio - XD400/4 - 4-Channel Class D Full-Range Amplifier [400 W]

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  • 75W x 4 at 4 Ohms
  • NexD Ultra High Speed Switching Design
  • 4 Channel Full Range Amplifier
  • Class D Type
  • Cutoff Frequency Selection from 50Hz to 500Hz
  • 100Wx4 at 2 Ohms
  • Black Powder Coat Finish
  • Can't find your Car Audio Systems,
  • Suitable For All Car Make Models
  • SUPC: SDL143758352


General Specifications
Frequency Response 12 Hz to 22 KHz
Signal to Noise Ratio Greater than 84 dB
Damping Factor at 2 Ohms Greater than 75 / 50 dB
Input Voltage Range at RCA Inputs 100 mV at 4 V RMS
Fuse Rating 50 A
Signal Processing
Filter Modes Low Pass or High Pass
Filter Slope 12 dB
Filter Frequency Range 50Hz to 500 Hz
Filter Freq. Potentiometers Yes
Filter Defeatable Yes
Remote Level Control Optional
Remote Level Modes 2 or All Channels
Channel Input Mode Switch Yes
Pass-Through Preamp Output Type Buffered
Source Channel Selection for PreOuts Yes
RMS Power
At 4 Ohms, 14.4 V 75 W RMS x 4
At 2 Ohms, 14.4 V 100 W RMS x 4
Bridged at 4 Ohms, 14.4 V 200 W RMS x 2
At 4 Ohms, 12.5 V 60 W RMS x 4
At 2 Ohms, 12.5 V 90 W RMS x 4
Bridged at 4 Ohms, 12.5 V 180 W RMS x 2
Physical Dimensions
Height 52 mm
Width 216 mm
Depth 180 mm
Net Weight 2.15 kg
Period 1 Year Brand Warranty


This tiny amplifier packs a serious full-range punch, delivering a staggering 100 watts to each of its four channels into 2 ohms (14.4V, 1% THD). The breakthrough that makes this much power possible in such a small chassis is our NexD ultra-high-speed switching design, which allows for full bandwidth Class D operation with extremely low distortion and outstanding efficiency.

Use the XD400/4 in combination with our XD600/1 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 XD400/4 by itself to power two satellites, plus a subwoofer. With XD's, the possibilities are endless.

The XD400/4 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. With the addition of an HD-RLC remote level control (sold separately), the amplifier's Channel 1 and 2 level or overall level can be directly controlled from the driver's seat.

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