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Kicker KX400.4 4 Channel Car Amplifier

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  • Kicker KX400.4  4 Channel Car Amplifier
  • Kicker KX400.4  4 Channel Car Amplifier
  • Kicker KX400.4  4 Channel Car Amplifier

List Price: $409.00 On Sale: $258.85 (GST Included) (You save 36.71%)


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Other Options

  • Kicker KXA400.4 4 Channel Car Amplifier

    Kicker 4CH KXA400.4

    Sale Price: $359.85


How To Build A Bundle

The following accessories can be bundled with your purchase by checking the green ‘Include with Product’ button. You can add as many items to your order as you require and then simply ‘Add to Cart’ to complete order.

Product Info

Product Info

Please Note: This KICKER Amp is part of our EXDEMO Clearance and is only available in limited quantities. This product has been on our Demo Board and will shown signs of previous use but is supplied with a full manufacturers warranty. This is a limited offer and is available only while stocks last. This product may have already sold out and there are no rain checks offered on clearance items.

Check out the Kicker KX400.4 4 Channel Car Amplifier's Key Features
(Kicker KX4004)

  • Genuine Australian 12 Month Kicker Audio Warranty
  • Peace of Mind Purchase Guarantee (bottom of page)
  • 4 Channel Class D
  • 100w x 4 RMS Power @ 2Ω
  • 200w x 2 RMS Power @ 4Ω (bridge)
  • Variable low pass filter
  • Variable high pass filter
  • Variable subsonic filter
  • Variable bass boost


KX-Series Amplifiers represent the brand workhorse, delivering the power and performance expected from 40 years of proven technologies and advanced components.  Five mono subwoofer amplifiers, a 4-channel model, a stereo model and a hybrid 5-channel model that includes full-range power and a 400-watt sub section – all supplying high-efficiency, Class-D power in the most compact chassis to date.

KX Mono Subwoofer Amps produce the most power from any single KICKER amplifier, 2,400 rated watts surging to raucous CompR™ or CompRT™ Subwoofers.  Without question, we know bass and bass power, and KICKER actual power always exceeds rated power.


  • Workhorse power and performance from proven technologies
  • Signature compact footprint for space-challenged installs
  • High-efficiency Class-D design in multi-channel and stereo amps
  • Class-D models with boost converter in mono amps provide 80-percent efficiency
  • Works best with KICKER CompR and CompRT Subwoofers, and RS and KS Speakers
  • All feature FIT™ (Fail-Safe Integration Technology) to accept output from virtually any source
  • FIT’s lab-grade, balanced differential inputs offer best possible noise rejection
  • Double-sided fiberglass circuit board
  • Built-in crossovers and adjustable KickEQ™ for dialing it in
  • DC offset or 12v remote auto turn-on modes
  • Angled custom-tooled power connectors
  • Looks great with magnetic panels covering controls and glass-fiber composite end panels

Kicker Car Audio - The Company

Kicker have been in the audio game since as early as 1973 and it was in 1980 when Kicker switched all their focus on producing high quality car audio equipment.

With industry leading designs and continual developments to improve, Kicker has become well known for their ground shaking subwoofers, audio crossovers and the amplifiers in charge of running them all.

Solo-Baric® and Santoprene® surrounds are two of many technologies Kicker have implemented into their designs. Along with previous technologies, this helps to create a more high performance and superior bass which in return exceeds anything else in it's class.

Peace of Mind Purchase Guarantee & Declaration of Warranty
This product is supplied directly via Kicker Australia and enjoys the FULL benefits of the 'Kicker Australian 12 Month Warranty'. (You may also be entitled to other consumer warranties as provided by the Australian Consumer Guarantee and these entitlements are not limited by this warranty). Should this product fail, you have the option of contacting the manufacturer / supplier directly.

We are a FULLY AUTHORISED Australian retailer for Kicker Australia.

This product will be shipped from our Sydney Warehouse. This product is NOT DROP SHIPPED from overseas.

Tech Specs

Technical Specifications

KX-Series Full-Range Class-D Multi-Channel Amps

Full-Range Channels Continuous RMS Power [watts/channel] @ 14.4V, 2-Ohm stereo 100x4  
Full-Range Channels Continuous RMS Power [watts/channel] @ 14.4V, 4-Ohm bridged mono 200x2
Subwoofer Channel Continuous RMS Power [watts/channel] @ 14.4V, 2-Ohm mono -
Remote Bass Control (included) n/a
- (all models 2-1/8 H x 8-5/16 W x ___ L) in. 11-3/16  
- (all models 5.5H x 21.0W x ___ L) cm 28.4
Common to all Models

Frequency Response (Hz):

10-20k (KX.5 sub ch. 10-160), +0/-1dB

Input Sensitivity:

high level 250mV-10V, low level 125mV-5V

Signal-to-Noise Ratio:

>95dB, a-weighted, re: rated power

Active Crossover:

(amp1) 24dB/octave, variable 10-500Hz, selectable high pass, low pass or all pass, w/10x switch; (amp2) 24dB/octave, variable high pass 10-500Hz, variable low pass 40-500Hz, selectable high pass, low pass, all pass or band pass, w/10x switch for lo pass; (KX.5 sub channel) 24dB/octave, variable 40-160Hz, low pass only

Subsonic Filter:

24dB/octave, high-pass variable 10-80Hz

KickEQ™ Boost:

variable to +18dB, centered @ 40Hz
In The Box

What's Included?

  • Kicker KX400.4 4 Channel Car Amplifier

1 Customer Reviews

Very happy
"Clips a bit easy so I had to up the 12vSupply Cable
otherwise I am very happy with this amp"
  •   1 star 2 stars 3 stars 4 stars 5 stars

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