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Kicker 40KX1600.1

Mono subwoofer amplifier — 1,600 watts RMS x 1 at 2 ohms

2 Reviews | 2 questions - 2 answers

Item # 2064KX16K1

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Our take on the Kicker 40KX1600.1

Kicker's KX1600.1 mono subwoofer amplifier will power your bass with up to 1,600 watts RMS. This reliable and compact KX Series rocker remains cool even when pushed hard, thanks to its high-mass heatsink, high-tech internal components, and the efficient Class-D amp technology. And Kicker managed to pack more watts per square inch inside the KX1600.1 amplifier than almost any other mono subwoofer amp made.

Delivers massive bass with style

Kicker's KX1600.1 mono subwoofer amplifier will power your bass with up to 1,600 watts RMS. This reliable and compact KX Series rocker remains cool even when pushed hard, thanks to its high-mass heatsink, high-tech internal components, and the efficient Class-D amp technology. And Kicker managed to pack more watts per square inch inside the KX1600.1 amplifier than almost any other mono subwoofer amp made.

Connects to virtually any system

Kicker employs their Fail-Safe Integration Technology (FIT™) to reject noise and stop any interference generated by your car's electronics, so you'll enjoy your music clean and pure. Speaker-level inputs make it possible to hook this amp up to almost any stereo, even a factory system. Kicker even thought to build in a 3-second turn-on delay, eliminating any annoying and potentially damaging turn-on pops.

Bass controls behind the folding door

You can tune for almost any enclosure and sub, and keep the signal clean, using the steeply-sloped low-pass and subsonic filters. A parametric KickEQ™ lets you choose a bass frequency to boost and also how many notes above and below that center frequency you can boost along with it. And a wired remote lets you control all that awesome power from your front seat.

Kicker KX1600.1 control panel

KX1600.1 control panel

Confused about impedance? Check out our article on matching subs and amps.

Product Highlights:

  • mono subwoofer amplifier
  • 800 watts RMS x 1 at 4 ohms (1600 watts RMS x 1 at 2 ohms)
  • CEA-2006 compliant
  • variable low-pass filter (40-160 Hz, 24 dB/octave)
  • Kick EQ+ parametric bass boost (0-18 dB at 20-80 Hz with bandwidth adjustment 1-5)
  • variable subsonic filter (10-80 Hz, 24 dB/octave)
  • front-mounted controls protected behind fold-down door with magnetic latches
  • wired remote level control included
  • Class D amp technology with boost-converter power supply allows amp to achieve near 80 percent efficiency
  • Fail-Safe Integration Technology eliminates noise from your vehicle's electrical system
  • preamp and speaker-level inputs (speaker wire to RCA adapter required for speaker-level input))
  • preamp outputs
  • 1/0-gauge power and ground leads and a 150-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amplifiers in a system, an additional 150-amp in-line fuse between the distribution block and this amplifier is recommended
  • 11-1/4"W x 2-3/16"H x 9"D
  • warranty: 2 years (extends to 3 years when purchased with a Kicker 09PKD1 or PKD1 wiring kit)
  • Our 60-day money-back guarantee

Yes I love it. I have it on my 2 Jl w7 12 sub and it really hit hard.

Carlos, Brooklyn NY

What's in the Box:

  • Mono subwoofer amplifier
  • Remote bass-level control knob
  • 20' Remote cable (with an RJ-25 phone plug on each end)
  • Four 2" Self-tapping screws
  • 4 Flat washers
  • Two 3/8" Self-tapping screws
  • 3mm Allen wrench
  • Owner's Manual (English/ French/ Spanish/ German)
  • Power certificate

Kicker 40KX1600.1 Reviews

Average Customer Review(s):

(2 Reviews)

Clean and Strong

Dom C. from Trenton, Mi on 3/21/2016

Crutchfield Customer Review (What's this?)

I have this amp in my 2014 Ford Fusion with two Alpine Type R subwoofers in a sealed enclosure, wired at 2 ohms. It has to be one of the most versatile amplifiers I've ever had the pleasure of owning. You can get anywhere from a mellow vibration, a nice solid bump to compliment your music, to all out bass brutality, flexing your windows and ratting the heck out of your trunk! I have my trunk dynamatted and it still rattles when I turn the bass knob to Halfway. The best part... It is very clean! I am an SQ freak and this thing exceeded my expectations. Mind you, you will need 200 amp fuses for each sub you run and it is a bit demanding on your system so be smart and invest in an extra battery. Also, it runs cool and really takes ALOT to get it anywhere close to being hot. Don't let the price tag deter you. This is a solid amplifier and a wise investment if you are serious about bass. Hats off to Kicker for the quality product and, as always, much respect and a big thank you to Crutchfield for their continued awesome customer support!

Pros: Incredible, clean power when you want it, runs cool, looks classy, small footprint, reliable

Cons: Good luck trying to find one. I can't

Kicker 40KX1600.1

Carlos from Brooklyn NY on 5/25/2015

Crutchfield Customer Review (What's this?)

Yes I love it. I have it on my 2 Jl w7 12 sub and it really hit hard.




Hands-on research

Product Research



Class D Amplifier Design: The Kicker KX1600.1 is a Class D subwoofer amplifier, which uses digital switching to amplify audio signals. This design results in high efficiency and less heat. The Class D design also allows the KX1600.1 to have a small footprint for increased cargo space.

CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured into a 4Ω load, with 1% or less Total Harmonic Distortion plus noise (THD+N), and over a frequency range of 20 Hz to 20 kHz (for full range amplifiers). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006 allows consumers to compare car amplifiers and receivers on an equal basis. Using CEA-2006 criteria, the Kicker KX1600.1 is rated at 800 Watts RMS x 1 channel with a 75 dBA signal to noise ratio.

Specifications: The manual also lists these non CEA-2006 compliant specifications:

  • Power: 1600 watts x 1-channel (into 2Ω with no more than 1% THD+N, 14.4 volts)
  • Signal to Noise Ratio: 95 dB (at rated power)

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

Low-Pass Filter: The Kicker KX1600.1 is equipped with a low-pass electronic crossover. This continuously variable low pass filter can be set between 40 Hz and 160 Hz with a slope of 24 dB/octave. Properly set, the low pass filter creates a smooth transition between the subwoofer and the sound system's full-range speakers. The low-pass crossover cannot by bypassed.

Subsonic Filter: The amp also features a 24 dB/octave subsonic filter, continuously variable from 10 Hz to 80 Hz. Ultra-low frequencies that cannot be reproduced by a subwoofer do not become sound, but unnecessary oscillations, which affect sound by causing distortion. These frequencies also waste amplifier power and can cause damage to speakers. The built-in subsonic filter removes the signal below the set frequency to improve the performance of the speakers by eliminating harmful distortion. The subsonic filter crossover cannot by bypassed.

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 offset 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.

KickEQ+: The amplifier's KickEQ bass boost circuit is actually a single band parametric equalizer. The center frequency, Q value, and boost level are all adjustable.

Protection Circuitry: The KX1600.1 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 front side of the amp illuminates red, the protection circuit has engaged and the amp will not play until the problem is resolved.


Gain: To accommodate the varying range of signal levels coming from today's factory and aftermarket radios, the Kicker KX1600.1 features an adjustable gain control (low level: 125mV-5V, high level: 250mV-10V). The rotary control is labeled from 0 to 11.

Subsonic Filter: The rotary subsonic filter control is continuously variable from 10 Hz to 80 Hz

Crossover: The low-pass crossover point is continuously variable from 40 Hz to 160 Hz.

KickEQ+: The KickEQ+ bass boost circuit has three controls:

  • Center Frequency: continuously variable from 20 Hz to 80 Hz
  • Band Width: the Q value is variable from 1 to 5
  • Boost: continuously variable from 0 to 18 dB

KXRC Remote Bass Control: The KX1600.1 comes with the KXRC Remote Bass Control, which allows you to control the output level of the amplifier from the front of your vehicle. The wired remote can be mounted under your dash. The supplied 20' cable, with RJ-25 phone plugs at each end, connects the wired remote to the amplifier.

Note: The KXRC Remote Bass Control measures approximately 1-5/8" wide x 1" high x 1-1/4" deep (2-1/8" including knob and cable).


Power Connections: The power and ground connections are set-screw terminals that will accommodate up to 1/0-gauge wire. The remote turn-on set-screw terminal will accept up to 8-gauge wire. The included Allen-wrench is required to loosen/tighten the terminals.

Note: The Amplifier is not equipped with an internal fuse. An external 150-amp fuse (not included) must be installed on the power wire. If the system has only this amp and a wiring kit is used that includes a fuse with a value other than 150-amps, the original should be replaced with a 150-amp fuse.

Speaker Outputs: The Kicker KX1600.1 is equipped with two pair of set-screw terminals, internally wired in parallel, making it easy to connect two subwoofers. The terminals will accommodate up to 8-gauge wire and are loosened/tightened with the included Allen-wrench.

Dual Sensitivity Inputs: The KX series amplifiers have dual input sensitivity differential RCA inputs, which will accept either speaker-level (high) or RCA (low) signals from your car's head unit. A high-level signal can be run from the head unit's speaker outputs to the stereo RCA input of the amplifier using a Speaker Wire to RCA adapter (206KiSL, sold separately). The Input Level Switch on the amp should be set to high when using a speaker-level input, and low when using an RCA line-level input.

Line Level Output: The amplifier has a pair of RCA line level outputs for feeding another amplifier. This is the same signal that is present at the amp's inputs. Either input method (speaker-level or RCA) will provide a low-level output signal to the RCA outputs. The amplifier's crossovers have no effect on the line level output signal, however, if you input a filtered signal from the head unit, the amp's low-level output will also be filtered.

Remote Bass: Connect the included wired remote bass control to the RJ-25 port on the amplifier.

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 verify what’s in the box, 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.

Q & A

Customer Q&A

2 questions already asked

Thanks for your question. Yes it does. You can find this information on the main product page under "What's in the Box". Hope this helps.[ Kenny  Dec 02, 2016 ]  Staff
The Kicker KX1600.1 features dual-sensitivity differential RCA inputs, but they are not "balanced differential" inputs. For more information or to discuss further, feel free to reach out to an Advisor directly by phone (1-800-324-9695) or online chat. I hope that helps![ Larry  Nov 25, 2016 ]  Staff