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Kicker KX Series Full Range Class D Multi-Channel Car Amplifier - 40KX4004

Abt Model: 40KX4004 | UPC Code: 713034065821
 Discontinued Product This item is no longer available from our website.
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Kicker - 40KX4004 - Car Audio Amplifiers
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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/ 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/ Grey Finish
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Product Details

Kicker KX Series Full Range Class D Multi-Channel Car Amplifier - 40KX4004

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


  • 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 -
  • Total Max Power [watts] @ 15.6V 400
  • Remote Bass Control (included) N/A
  • Dimensions:
    • (all models 2-1/8 H x 8-5/16 W x 12-3/4 L) in.
  • 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

Approximate Weight:

  • Unit: 10 lbs
  • Shipping: 12 lbs

Approximate Dimensions:

  • Depth: 12.75"
  • Height: 2.13"
  • Width: 8.31"

Warranty Information:

  • Manufacturer Warranty (authorized online retailer): 1 Year Parts And Labor
More reasons to buy the Kicker 40KX4004 from Abt Electronics
  • is an authorized dealer (Learn More).
  • The Kicker 40KX4004 is Brand New.
  • The Kicker 40KX4004 Ships in a Factory Sealed Box.
  • Abt ships this product for free!
Kicker KX Series Full Range Class D Multi-Channel Car Amplifier

Kicker KX Series Full Range Class D Multi-Channel Car Amplifier


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