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JL Audio XDM400/4

400W RMS Class D XDM Series 4 Channel Car and Marine Amplifier

JL Audio
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• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Product Highlights


• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Description


JL Audio brand icon

Authorized dealer


JL Audio XDM400/4

The ultra-compact XDM400/4 packs a serious full-range punch, generating a whopping 100 watts to each of its four channels into 2 ohms (14.4V, 1% THD). The technology that makes this much power possible in such a compact chassis is its advanced NexD high-speed switching design, which permits full bandwidth Class D operation with extremely low distortion and remarkable efficiency. Suitable for car or boat installations, the XDM400/4 is built with marine-grade materials and features an exclusive, dual-mode input filter for noise-free performance in boats or cars. Automatic turn-on capability (via signal sensing or DC-offset sensing) is also onboard for easy factory system upgrades. Finished in a sleek, black powder-coat, all controls are protected beneath a gasketed, removable top cover for easy access.


Product Details:

  • XDM Series Class D 2 ohm Stable 4-Channel Amplifier
  • RMS Power Rating:
    • 4 ohm: 75 watts x 4 channel
    • 2 ohm: 100 watts x 4 channel
    • Bridged: 200 watts x 2 channel @ 4 ohm
  • Total power output: 400 watts
  • LED Power/Protect Light
  • Wired bass level remote control with optional JL Audio HD-RLC or JL Audio MHD-RLC
  • Speaker-level (high-level) inputs (Requires adapter like the JL Audio XD-CLRAIC2-SW)
  • Signal sensing remote turn-on
  • Protection Circuitry with Status LED
  • NextD switching amp technology
  • Differential-balanced inputs help eliminate noise
  • Weather-resistant chassis: black powder-coat finish, gasketed control cover, stainless steel hardware
  • Input sensitivity:
    • Low level: 200mV - 4 volts
  • Frequency Response: 12 - 22000 Hz
  • Total Harmonic Distortion (THD): <1%
  • Signal to Noise Ratio: >104 dB
  • Variable high-pass filter: 50 - 500 Hz
  • Variable low-pass filter: 50 - 500 Hz
  • Fuse Rating: 40A
  • 4 AWG gauge amplifier wiring kit is recommended for installation
  • Dimensions: 8.52" L x 7.09" W x 2.05" H
  • Authorized Internet Dealer
  • 3 Year Manufacturer's Warranty
  • MFR #: XDM400/4

Product history:

JL Audio XDM400/4 thumbnail
(newest, current model)
JL Audio XD400/4V2 thumbnail
(previous model, replaced by JL Audio XDM400/4)
JL Audio XD400/4 thumbnail
(previous model, replaced by JL Audio XD400/4v2)

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Specifications & Details


Key Features
Amplifier Key Features
Speaker Level Inputs
Weather-Resistant
Power Specifications - Full Range Channels
RMS Power @ 4 ohms
75 watts x 4 channel
RMS Power @ 2 ohms
100 watts x 4 channel
Bridged RMS Power
200 watts x 2 channel
Amplifier Specifications
Series
XDM Series
Amplifier Class
D
Number of Channels
4-Channel
Total RMS Power Output
400 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohm
Minimum Impedance Bridged
4 ohms
Frequency Response
12 - 22000 Hz
THD at Rated RMS Power
<1%
Speaker Level Inputs
Optional (Requires Accessory Adapter)
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
50 - 500 Hz
Low-Pass Crossover Frequency
50 - 500 Hz
Signal-to-Noise Ratio
>104 dB
Remote bass/level controller
Optional (Accessory required and sold separately)
Fuse Rating
40A x 1 
Total Fuse Rating
40
Strappable
No
Amp Bluetooth Connectivity
No
Hi-Res Certified
No
Low-Level Input Sensitivity
200mV - 4 volts
What is in the box?
Paperwork
User manual
WITB: Amplifiers
Amplifier
Adhesive brand badge
Allen wrench
Warranty and Return Policy
Parts Warranty Duration
3 years
Labor Warranty Duration
3 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

XDM400/4

Weight:

5.06lbs

Internal SKU:

xdm4004

Internal Product ID:

199519

Product and How-to Videos


Customer Ratings & Reviews


JL Audio XDM400/4 thumbnail image

5 star
97%
4 star
3%
3 star
0%
2 star
0%
1 star
0%



Durability
4.9
Value
4.6
Features
4.9
Design
5
Usability
5

Customer Photos & Videos


Customer Reviews

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Great Sounding Amp

The following review is for a previous version (XD400/4V2).

I love the quality of the sound that comes from this amp. I just wished I had the clipping light on this unit as it does on the RD400/4. The only reason I went with the XD400/4 over the RD400/4 is the signal to noise (dB) on the XD amp.
The XD series also comes with a 2 year warranty as opposed to a 1 year warranty on the RD series amps

By Dan on June 7, 2017

56 found this helpful


very nice amp sound clean

The following review is for a previous version (XD400/4).

Very good amp small and sounds clean

By jose on May 5, 2014

49 found this helpful


Amazing sound

The following review is for a previous version (XD400/4V2).

Matched with JL audio c2 speakers this amp provides great crisp sound. The roll back feature is a cool feature that the amp will never shut off due to heat.

By Mark on February 12, 2024 Checkmark Icon Verified purchase

44 found this helpful


Awesome little amp

The following review is for a previous version (XD400/4V2).

Needed an amp to fit where the stock Monsoon amp was in a 4th gen f-body. This amp fit on the original amp bracket without any problem. Hooked up to two pairs of jl audio c2-650x coaxials it's the prefect amount of power.

By Andrew J. on February 25, 2018 Checkmark Icon Verified purchase

44 found this helpful


This Thing Rules!

The following review is for a previous version (XD400/4).

This amp is compact, powerful, stays cool, and is very, very efficient. Hook any set of speakers up to this and it will drive them hard with beautiful, clean sound. This unit may be expensive, but you get what you pay for!

By Jared on April 21, 2013

46 found this helpful


Blessing in disquise

The following review is for a previous version (XD400/4).

I hooked this unit up to my 6.5" components in a 4 channel / 4ohm configuration and was not disappointed in any way. Spend the extra $120 and buy this amp over the competitors. Money well spent in my opinion. I first bought a RF Prime 400w D-class unit that fried in a matter of minutes at 3/4 volume. Thank god it failed because I bought this one instead. Blessing in disquise!

Pros: Sleek look, easy to install, crossover dial detents (awesome!), small size w/big sound.

Cons: Absolutly none that I can think of.

By Ben on May 11, 2012

46 found this helpful


Amazing Amp

The following review is for a previous version (XD400/4).

I am impressed with the power of this amp, I had two amplifiers rockford fosgate for focal's access and Poliglass, also for a couple of subwoofers jl Audio 12W1, and really did not know what kind of brands buy it. I decided to buy this amp but I was afraid if that brand was I'm looking for. I have a surprise, it's pretty good and quite practical, and has a power that leave me very satisfied

By Max on April 23, 2014

45 found this helpful


JL AUDIO AMP!

The following review is for a previous version (XD400/4).

This amp performs great. I have it connected to 2 6x9; 2 6 1/4; and two tweeters which pumps out awesome result with clarity on the vocals and the music tracks. I'm thinking of upgrading to the 600 series because I want to add a woofer for more drop in the bass.

By ROAD GLIDE on August 30, 2012

45 found this helpful


Awesome. Perfectly replaces OEM JEEP JK AMP IN DASH

The following review is for a previous version (XD400/4).

Perfect !

By michael on February 9, 2011

46 found this helpful


Surprisingly powerful.

The following review is for a previous version (XD400/4V2).

I’m impressed. I was running 3 separate amps to power 4 pair of JL speakers in my doors and one pair in the dash. I replaced them with this amp. Much cleaner looking and sounding. My subs are stronger because I’m drawing less power. My other amps were running warm and shutting down so I like that this has a cool down mode. Easy to hook up and install. The best terminals of any amp. Just ordered one more for my dash and will drive extra tweeters off the other channel. Never hurt to flash JL too.

By Anonymous on August 6, 2018 Checkmark Icon Verified purchase

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