Boost your music's power

For some people, great music is what makes life worth living. Kicker built their DX400.4 4-channel amp to send 50 watts RMS to each of your car's front and rear speakers, so you can feel the musical joy too. You can also switch the amp to 2-channel mode to run a pair of subwoofers with 200 watts RMS of bass goodness each. The built-in high- and low-pass filters adjust the amp's output so your speakers or subs sound their best, while the variable bass boost lets you add just the right amount of bump to your tunes.

Isolates and eliminates noise

You want lots of power for your speakers, but this Kicker DX amp gives you something extra — clean power. Kicker's FIT™ — Fail-Safe Integration Technology — rejects noise from alternators, audio/video gear, and other car electronics for crisp, clean operation, and accepts a wide range of signals so you can hook up the DX400.4 to almost any stereo.

DX400.4 control panel

Product Highlights:

  • 4-channel car amplifier
  • 50 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
  • 200 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode)
  • CEA-2006 compliant
  • variable high- and low-pass filters (50-200 Hz, 12 dB/octave)
  • variable bass boosts (0-12 dB at 40 Hz) on front and rear channels
  • Class AB amp technology
  • differential-balanced inputs eliminate noise from your vehicle's electrical system
  • preamp and speaker-level inputs (speaker-level input requires an optional adapter)
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • fuse rating: 25A x 2
  • 16-1/5"W x 2-1/4"H x 8-5/16"D
  • warranty: 2 years (extends to 3 years when purchased with either a Kicker single amp wiring kit or a Kicker multi-amp kit)
  • Our 60-day money-back guarantee

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Hands-on research

What's in the box?

Download owner's manual

  • 4-Channel amplifier
  • Four 25-Amp ATO blade fuses (2 installed/2 spare)
  • Two 4-gauge crimp-on barrier spade connectors
  • Eight 12-gauge crimp-on barrier spade connectors
  • One 14-gauge crimp-on barrier spade connector
  • Four 3/4" Self-tapping screws
  • Eight 16-22 Gauge butt connectors
  • Owner's manual (English/ Spanish/ German/ French)
  • Power certification sheet

Product Research

Features
Controls
Connections
Warranty

Features

CEA 2006 Compliant: The Kicker DX400.4's power and signal to noise ratio are measured according to CEA 2006 standards (Consumer Electronics Association). These standards allow you to accurately compare the specifications of all CEA 2006-compliant amplifiers, even if they are different brands. Manufacturers who adhere to the standards can display the CEA 2006 logo on their products and packaging. The rated power output is 50 watts RMS x 4 channels into 4Ω (20 Hz-20 kHz, <1% THD+N). While the CEA 2006 S/N is 85 dB (measured at 1 watt), the S/N at rated power is >95 dB.

Kicker Livin' Loud Certified Power: The amplifier comes with a certificate that indicates the total maximum wattage of the particular amplifier, along with the model number, serial number, tested date, and whether the amplifier passed the total harmonic distortion, signal-to-noise ratio, and protection circuit tests.

Protection Circuitry: The DX400.4 has protection circuitry that will turn the amp off in the event of overheating, over voltage (power input), under voltage (power input), short circuit (speaker output), and over current (speaker output). If the Protection LED on the left side of the amp illuminates red, the protection circuit has engaged and the amp will not play until the problem is resolved.

Fail-Safe Integration Technology (FIT): To accommodate the varying range of signal levels coming from today's factory and aftermarket radios, the DX400.4 utilizes Fail-Safe Integration Technology (FIT), offering isolated differential inputs for significant noise reduction, and compatibility with virtually any factory radio.

Speaker Level Input: High level inputs can be used when the source device doesn't have preamp level outputs. The same RCA inputs on the amp are used for either speaker level or line level connections. When a speaker level signal is used, speaker wire to RCA adapters are needed (item number 206KISL, sold separately) and the Input Level should be set to High.

Controls

Gain Control: The front and rear sections of the amp have independent input gain controls. With the Input Level Control switch at the appropriate setting, you can set the rotary Gain Control to match the output of the source unit. The Gain Controls are adjusted with a flat-head screwdriver and can be set between 0 and 11.

Input Level: The input level control is switchable; when set to Low, the amp can accommodate a line level input signal of 125mV-5V, on High, the amp will accept a 250mV-10V speaker level signal.

Auto Turn-On: The Auto Turn-On switch offers three options:

  • +12 V: the amp turns on when +12 volts is applied to the remote terminal
  • DC Offset: the amp turns on when a 6 volt surge is detected on the signal inputs (from a speaker level source); in this mode the amp's remote terminal acts as a +12 volt output to turn on another component
  • Audio: the amp turns on when an incoming audio signal is detected; in this mode the amp's remote terminal acts as a +12 volt output to turn on another component

Crossover: The front and rear amplifier channels have independent crossover settings and can be set for low-pass, high-pass, or full-range operation. The crossover points are continuously variable between 50 and 200 Hz; the crossover slope is 12 dB per octave.

KICKEQ Bass Boost: The front and rear amplifier channels have independent bass boost controls. The bass boost circuits provide a variable (0-12 dB) signal boost at 40 Hz.

Fader: When powering four speakers and using both the front and rear inputs, turn the fader switch On to maintain front/rear fader control.

Connections

Left Side of Amplifier:

  • +12V (power): screw terminal; accepts spade connector up to 0.5" wide
  • REM (remote turn-on): screw terminal; accepts spade connector up to 0.325" wide
  • GND (ground): screw terminal; accepts spade connector up to 0.5" wide
  • Speaker Outputs: four pair of screw terminals; accept spade connectors up to 0.325" wide
  • Fuses: two 25-amp ATO fuses (factory installed)

Right Side of Amplifier:

  • RCA Inputs: two pair of RCA input jacks, front and rear (labeled Amp 1 and Amp 2)

Warranty

Extended Warranty: Kicker will add a year to the standard two year warranty (for a total of three years) when any matching Kicker amplifier wiring kit is used with this amp (4 gauge minimum). Both the amp and wiring kit should be purchased on the same order and the usual warranty limitations apply (covers manufacturing defects, must be purchased from an authorized Kicker dealer, etc.).

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Kicker 11DX400.4 Reviews

Average Customer Review:

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Kicker 11DX400.4

Written By Anonymous, juliette ga. on Tuesday, March 05, 2013

Crutchfield Customer Review (What's this?)

Just what I needed

Pros: Powerful and clean

Cons: None yet

Get everything you’ll need to enjoy your new Kicker 11DX400.4

You'll need an amp wiring kit to install your new amplifier, as wiring is not included.
Bring the music from your amp to your speakers.
Patch cables take the music from your stereo to the amplifier. Most amp wiring kits don't include them.
Helps protect your car's charging system and improves power handling. Required power and ground wires not included with cap.
The right tools will make the installation easier.
Kicker PK4

Kicker PK4

4-gauge amplifier power wiring kit

Item #: 206PK4

$129.99
Add to Cart
T-Spec 4PK Installation Kit

T-Spec 4PK Installation Kit

4-gauge amplifier wiring kit — includes speaker wire

Item #: 1204PK

(3)

$89.99
Add to Cart
Rockford Fosgate RFK4X

Rockford Fosgate RFK4X

Complete 4-gauge amplifier wiring kit
Includes patch cable and speaker wire

Item #: 575RFK4X

(12)

$159.99
Add to Cart
Rockford Fosgate RFK4

Rockford Fosgate RFK4

4-gauge amplifier power wiring kit

Item #: 575RFK4

(10)

$114.99
Add to Cart
EFX PA4BX Wiring Kit

EFX PA4BX Wiring Kit

4-gauge amplifier wiring kit — includes 2-channel patch cable

Item #: 142PA4BX

(6)

$79.99
Add to Cart
T-Spec 16-gauge Speaker Wire

T-Spec 16-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW16WB1

(13)

T-Spec 12-gauge Speaker Wire

T-Spec 12-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW12WB1

(30)

Stinger PRO Series Speaker Wire

Stinger PRO Series Speaker Wire

Priced per foot (16 Gauge)

Item #: 541SPW516B

(52)

JL Audio XD-CLRAIC2-SW

JL Audio XD-CLRAIC2-SW

2-channel speaker output converter (bare speaker wires to male RCAs)

Item #: 136XDCLR2S

(12)

Kicker KISL

Kicker KISL

2-channel speaker wire adapter (bare-wire connector to RCAs)

Item #: 206KISL

(14)

$12.99
Add to Cart
T-Spec 2-Channel RCA Patch Cables

T-Spec 2-Channel RCA Patch Cables

Available in 7 different lengths (20-foot)

Item #: 120RCA202

(27)

$20.99
Add to Cart
T-Spec 4-Channel RCA Patch Cable

T-Spec 4-Channel RCA Patch Cable

17-foot length

Item #: 120RCA174

(8)

$29.99
Add to Cart
EFX 17-foot RCA Patch Cable

EFX 17-foot RCA Patch Cable

Item #: 142A17C

(55)

$7.99
After $2.00 Savings Add to Cart
EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Reference Series Multi-Core RCA patch cables — available in 5 different lengths (12-foot)

Item #: 142RR12

$19.95
Add to Cart
EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Elite Series Braided Multi-Core RCA patch cables — available in 5 different lengths (6-foot)

Item #: 142RE6

$49.95
Add to Cart
EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Core Series Twisted RCA patch cables — available in 5 different lengths (17-foot)

Item #: 142RCT17B

$12.95
Add to Cart
T-Spec Capacitor

T-Spec Capacitor

1.5-farad capacitor with red LCD meter

Item #: 12015DDC

(11)

$79.99
Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6NGL

(53)

$24.99
Add to Cart
Pro.Fit Wire Worm

Pro.Fit Wire Worm

Installation tool helps route wiring through tight spaces

Item #: 042DM4533

(34)

$12.99
Add to Cart
S&G Wire Cutter/Stripper Tool

S&G Wire Cutter/Stripper Tool

Cuts and strips 12- to 22-gauge wire

Item #: 18119100

(17)

$19.99
Add to Cart
S&G Tool Aid 87650

S&G Tool Aid 87650

Door Trim and Panel Removal Tool

Item #: 18187650

(71)

Pro.Fit Trim Panel Tool

Pro.Fit Trim Panel Tool

Remove your vehicle's trim panels without damage

Item #: 042DM4022

(88)

Skewdriver Pro SPK4042

Skewdriver Pro SPK4042

Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)

Item #: 180SPK4042

(8)

$49.99
Add to Cart
Spec Tools SQR-200a Squeeze Wrench

Spec Tools SQR-200a Squeeze Wrench

Narrow space ratchet kit with 18 sockets

Item #: 180SQR200A

(1)

$49.99
Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6LNGL

(2)

$29.99
Add to Cart
Install Bay IB35400

Install Bay IB35400

Premium door panel and trim tool

Item #: 12035400

$15.99
Add to Cart
DEI Heat Shrink Tubing

DEI Heat Shrink Tubing

Black 4-foot length (Assortment)

Item #: 696010839

(8)

$24.99
Add to Cart
Autosound 2000 Disc Five

Autosound 2000 Disc Five

System Demonstration — Test CD

Item #: 503CD105

Autosound 2000 Disc One

Autosound 2000 Disc One

Low Frequency Test CD (Disc One)

Item #: 503CD101

(1)

$19.99
Add to Cart