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JL Audio JD400/4

400W RMS Class D JD Series 4 Channel Car 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

Learn more about the jd4004
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$279.99

 with warranty

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Description


JL Audio brand icon

Authorized dealer


JD400/4

The JD400/4’s controls can be found on the input panel of the amplifier, with all speaker and power connections located along the opposite end of the extruded aluminum chassis. Signal processing features include high or low-pass 12 dB / octave filters (defeatable) for each channel pair, with continuously variable frequency selection from 50-500 Hz, and dual-range, differential-balanced inputs capable of accepting line-level or speaker-level signals. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard equipment.

Onboard LED-clipping indicators are also included surrounding each input sensitivity control. This convenient feature lets you set your amplifier’s input sensitivity, quickly and accurately, without special equipment. You will also find a set of buffered, pass-through preamp outputs on-board, so you can pass signals to another amplifier.


Product Details:

  • JD 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 not included
  • 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
  • Advanced Rollback Protection System prevents thermal shut-down
  • Speaker-level (high-level) inputs
  • Input sensitivity:
    • Low level: 200mV - 2 volts
    • High level: 800mV - 8 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: 9.50" L x 7.50" W x 2.10" H
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty
  • MFR #: JD400/4

This product is temporarily out of stock. May we recommend...

NVX XQA10004

• 150 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

$349.99

List price $479.99

Kicker CXA360.4

• 65 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 180 watts x 2 channel @ 4 ohm
• Total RMS Power: 360 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

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Alpine KTA-450

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

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$269.95

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Specifications & Details


Key Features
Amplifier Key Features
Speaker Level Inputs
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
JD 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
No
Fuse Rating
40A x 1 
Total Fuse Rating
40
Strappable
No
Amp Bluetooth Connectivity
No
Hi-Res Certified
No
Low-Level Input Sensitivity
200mV - 2 volts
High-Level Input Sensitivity
800mV - 8 volts
What is in the box?
Paperwork
User manual
Warranty/Registration card
WITB: Amplifiers
Amplifier
Mounting screws (4)
Washers (4)
Allen wrench
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

JD400/4

Weight:

6.00lbs

Internal SKU:

jd4004

Internal Product ID:

178303

Customer Ratings & Reviews



5 star
96%
4 star
0%
3 star
4%
2 star
0%
1 star
0%



Durability
4.9
Value
4.9
Features
4.9
Design
4.8
Usability
5

Customer Photos & Videos


Customer Reviews

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Installed on 2 cars 1994 Miata and 2005 Scion XB

I installed both amp in both cars and the installation was very easy do to great electrical connectors both cars sound is very good using Pioneer double din touch screen head unit. Sound is very clean and has plenty of power both Amos was installed in the back 94 Miata in the trunk and on the 05 Scion XB also in t h e back. I love the quality of the J&L amps would buy again.

By Marco on March 11, 2023 Checkmark Icon Verified purchase

80

found this helpful.

Amazing sound!

This amp is phenominal. I am blown away with how well it performs. I believe in name brands when it comes to sound, and J/L hit the nail on the head with this one. I am running two subs bridged in two channel mode and it has a punch. QUALITY like this is meant to be heared. I wonder how great it would sound on my 6x9's. Makes me wish i still had my jl1000/1 to pair it with. Thanks sonicelectronics! You made my day.

By Ethan on August 7, 2021 Checkmark Icon Verified purchase

45

found this helpful.

Awesome Service

Was able to order a rush order and this amp in a breeze... Travis was so friendly and helpful, will highly recommend Sonic Electronix.

By Cody on August 23, 2020

45

found this helpful.

You cannot go wrong with this one.

I had been driving around in my Tundra for 3 years with the stock system. Friend picked my up one day with a proper system installed and I started researching parts the next day. Ended up completely stripping the interior out and upgraded from front to back.
Kenwood DDX9907XR HU, Focal Focal ES 165K components up front, JL coaxes in the rear, JL Audio CS112LG-TW3 Sub powered by a JD500/1 and this amazing little JD400/4 pushing the components and rear fill.
To say I am impressed by this amp is an understatement. JL made setting the gain idiotproof and this will play as loud and clear as my 51 Y/O ears can handle.
Cannot recommend enough.

By Ken on March 3, 2022 Checkmark Icon Verified purchase

45

found this helpful.

JL Audio JD400/4

Clear sound, very pleased.. Easy install, instructions need to be worked on a little..

By Barton on August 10, 2020 Checkmark Icon Verified purchase

44

found this helpful.

Unbelievable!!!!!!

JL Audio has always been an awesome brand and even better when you can get it at a great price!!! Thank you Sonic Electronix!!!!

By Eddie on October 6, 2022 Checkmark Icon Verified purchase

42

found this helpful.

Very happy!

Paired with my JL C2 650's, this thing rocks! Super easy to install and delivers that JL quality that you know you're always gonna get. For the price, you can't beat this baby!

By Pico on May 23, 2022

42

found this helpful.

Looks and Feels Awesome!

Have not installed this amplifier yet, but based on JL's reputation for quality and the look and feel of this amplifier I know it will perform well.

By Roberto on August 3, 2020 Checkmark Icon Verified purchase

45

found this helpful.

Nice amp.

Wow! I'm amazed at how this amp got highs & mids sounding crispy and very detailed. I highly recommend this 4 channel amplifier to anyone who looking for one. And the price is very reasonable as well. Two thumbs!!

By Anthony on May 2, 2022 Checkmark Icon Verified purchase

41

found this helpful.

Immediate Upgrade!

Buy, buy, buy! You get what you pay for. All 400/4 amps are not the same. JL for the win.

By Reyze on May 14, 2023 Checkmark Icon Verified purchase

40

found this helpful.


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