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  • JL Audio XD400/4: 4 Channel Class D Full-Range Amplifier 400 Watts
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JL Audio XD400/4: 4 Channel Class D Full-Range Amplifier 400 Watts


List Price: $449.99
Price: $328.00 + $8.39 shipping
You Save: $121.99 (27%)
Only 6 left in stock.
Ships from and sold by MagicSound.
  • 400W 2/3/4 Channel Amplifier
  • State-variable, 12dB/octave Butterworth with continuously variable cutoff frequency selection from 50-500 Hz. Configurable as Low-Pass or High-Pass. Defeatable.
  • 75W RMS x 4 @ 4 ohms
  • 100W RMS x 4 @ 2 ohms
  • 150W RMS x 2 @ 8 ohms
See more product details
8 new from $325.00

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Frequently Bought Together

JL Audio XD400/4: 4 Channel Class D Full-Range Amplifier 400 Watts + XD600/1 - JL Audio 600 Watt Class D Monoblock Subwoofer Amplifier + JL Audio HD-RLC Amplifier Remote Level Control and Cable
Price for all three: $758.36

These items are shipped from and sold by different sellers.

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  • Amazon Free 30-Day Tech Support: This item is eligible for free tech support for 30 days from the date of delivery. Over the phone, our trained technicians can help you set up, configure, connect, and troubleshoot so you can start enjoying your new purchase. Owners of qualifying products can reach Tech Support by calling 1-800-362-5703. Learn more

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Product Information

Technical Details
Item Weight4.4 pounds
Product Dimensions7.1 x 8.5 x 2 inches
Item model number02010XD400/4
  
Additional Information
ASINB0039AQVEM
Best Sellers Rank #44,858 in Electronics (See top 100)
Shipping Weight5.8 pounds (View shipping rates and policies)
Date First AvailableFebruary 20, 2010
  
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Technical Details

  • Brand Name: JL Audio
  • Model: 02010XD400/4

Product Description

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 NexDTM 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 Ch. 1 & 2 level or overall level can be directly controlled from the driver's seat. This amplifier features a black powder-coat finish and a gasketed, brushed aluminum cover for the controls.

Customer Reviews

4.9 out of 5 stars
5 star
27
4 star
3
3 star
0
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See all 30 customer reviews
What can I say...you just can't go wrong with JL.
Bart Brown
It needs airflow to keep cool, and is best mounted in an open space.
johnnyC604
The next great thing about this amp is its sound quality.
TNT

Most Helpful Customer Reviews

6 of 6 people found the following review helpful By JL Audio on January 19, 2011
This amp exceeds all expectations. I have this running two pairs JL C-5's with a Pioneer AVH-4200 head unit and it sounds amazing. It takes up no room in my trunk and does not get hot. Don't be fooled by the size. The sound quality rivals my Pioneer Elite home theater receiver. JL makes another spectacular 4 channel amp. Everyone knows you get what you pay for in this industry, this is a best amp for the price.
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7 of 8 people found the following review helpful By Brett Caillier on February 18, 2011
This amp is great. I first bought a rockford fosgate p400-4 to run my speakers (5.25 in component focals access in front and 6.5 coax focals access in back) and it worked well, but I am more of a signal quality type person. I replaced it with this amp, wow what a difference. This amp has much better signal quality, just look at the signal to noise ratio and you will see this JL amp is better than many that cost $1,000 or more. At 4 ohm by 4 channels at 75 watts rms this thing is also more powerful than the fosgate. I know many say the fosgate is underrated powerwise, but the JL amp is noticeably more powerful in my car. I was surprised that a class D amp could be so smooth.
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3 of 3 people found the following review helpful By Geo on September 27, 2011
Verified Purchase
Installed amp in new VW Tiguan with four Polk audio top end component speakers and a top end jvc double din receiver with onboard equalizer. Installed monster matting on all doors which improved sound a lot. Adjusted amp using sound CD purchased from jbl and using inccluded instructions. System sounds fantastic after several months of use but took quite some time to break in correctly. Warm tubelike sound even though all is digital. Highlynrecommendd ampneith fine adjustability for audiophiles. Very small despite powerful output allowing installation in the rear wheel well.
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5 of 6 people found the following review helpful By kontai69 on April 17, 2011
I bought this amp to power a pair of Polk 6.5" component speakers and a JL Audio 8" sub in my 2011 Honda CR-V. The amp is fed with the output from an Audiocontrol 2-channel line output converter. The amp is very small (slightly wider than a dollar bill) and fits underneath the driver's seat with plenty of room to spare. The amp is extremely well built, impeccably finished, and has alot of great design details. All the wires are secured with allen screws which allows you to tighten them down more strongly without possible stripping of the screw heads as you do with common flat/phillips screw heads. The amp controls are hidden underneath a cover and that the wire connections are all on one side. In my application, all this makes for a VERY clean looking install with no visible wires. The amp also has alot of adjustment switches to make it very flexible in terms of connectivity. The low and high pass filters have defined indentations to allow for precise setting of cutoff frequencies. I bridged two of the channels to power the 8" sub.

The amp seems to power the speakers/sub effortlessly with no audible noise or distortion. I can crank up the volume so loud that it is uncomfortable for me to listen to but the amp still puts out clean sound. It is quite pricey, but well worth the cost. TMK, it is one of the smallest amps on the market that puts out this much power. Overall, a very great purchase!
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2 of 2 people found the following review helpful By A. Felson on May 1, 2012
In a previous vehicle I had an audiosource 8x60W power plate that covered the entire back of one of the folding back seats, going into a 3 way MB quart component set up front, 2 channels bridged for the subwoofer, active crossover modules to separate the bands for the subwoofer/midbass/mid/tweeter speakers.

In my current car, I have this amp powering the front and rear sets. Up front I have a JL Audio C5-650X "component" coax speaker physically resembling a coax speaker, but with an external crossover module.

The JL is at least as clear, more powerful, and 1/8th the size of the Audiosource. I couldn't be happier with it.
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2 of 2 people found the following review helpful By Jon on April 8, 2012
Verified Purchase
Not only does this fit in the rear storage compartment of a Toyota MR2, but it's more than enough clean, clear power to run a set of Polk db6501s. Haven't had any problems with heat, overall great buy.
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4 of 5 people found the following review helpful By Big Sound on November 17, 2011
i won this guy in competition put on my JL and boy did i win a great amp. its so small and easily hidden (not thats its not a great loocking amp because it is, i just like to hide all my stuff)powers my JL C5 6.5s perfectly, however, the harmonic distortion noticable when you turn the gain up to the speakers max rms.
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3 of 4 people found the following review helpful By Dustin on April 2, 2013
Verified Purchase
I purchased this amp to power my JL components and JL coax speakers. The amp is very compact, and packs a huge punch. Much cleaner sounding than any other 4 channel amp I have ever used. It is also much louder, you can tell it is putting out more per channel than my old rockford 4 channel 400 watt.

This JL amp also has some great noise-cancellation qualities... I now have no feedback from the chassis, no alternator whine, nothing.. It's pretty incredible.

I'd recommend this to anyone wanting to get more out of their components than a base model 400 watt 4 channel can offer. This is certainly a step above.
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Most Recent Customer Reviews