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Kenwood KAC-9106D

Mono subwoofer amplifier — 1,000 watts RMS x 1 at 2 ohms

14 Reviews | 4 questions - 5 answers

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Kenwood KAC-9106D


Our take on the Kenwood KAC-9106D

Reliable performer

Kenwood makes tough, rugged amplifiers that bring you superior sound quality along with reliable performance. When you power your subwoofer with Kenwood's Performance Series KAC-9106D amplifier, you'll hear all the great tonal color, impact, and detail in your music's bass, from the hard punch of the rhythm section to the soft thump of a quiet kick drum.

The KAC-9106D mono amp puts out up to 1,000 watts RMS to your subwoofer. Onboard low-pass and subsonic filters let you adjust the signal so you'll get the best sound possible from your subwoofer/box combo. You can dial in up to 18 dB of bass boost if you want to really fatten up the sound.

This versatile amp features speaker-level inputs and signal sensing turn-on, so you can put this amp to work in just about any kind of system. Aluminum cover plates cover and protect the amp's connections and controls, giving your installation a neat, professional look.

Simply awesome amp!

joe, Alabama

What's in the Box:

  • Mono subwoofer amplifier
  • Three 40 amp ATO fuses (installed)
  • 2 Terminal covers (installed)
  • 7" Speaker-level input harness
  • 2.5mm Allen wrench
  • Four 5/8" Self-tapping screws
  • Instruction manual (English/ French/ Spanish)
  • Warranty information

Product Highlights:

  • mono subwoofer amplifier
  • 500 watts RMS x 1 at 4 ohms (1,000 watts x 1 at 2 ohms)
  • CEA-2006 compliant
  • Class D amp design
  • variable low-pass filter (50-200 Hz at 24 dB per octave)
  • bass boost (0-18 dB at 40 Hz )
  • subsonic filter (20-50 Hz, 18 dB/octave )
  • speaker-level inputs with signal sensing turn-on
  • preamp inputs and outputs
  • fuse rating: 40A x 3
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 13-3/16"W x 2-1/4"H x 7-5/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

Kenwood KAC-9106D Reviews

Average Customer Review:

14 Reviews

Drives two 4 ohm shallow mount subs very well

Written by: SpencerH from Angel Fire, New Mexico on December 4, 2015

Crutchfield Customer Review (What's this?)

This amp does a good job of driving two MTX FPR12-04 shallow mount subwoofers in my Mercedes E350. I like the speaker level inputs that are included, as in this application in a Mercedes with a Harman-Kardon system, line-level inputs were difficult to achieve. The speaker level inputs work very well, and also act for remote power, removing another wire that I didn't have to run. Ability to roll-off high frequencies at the amplifier itself is another benefit, as it eliminates the need for a more formalized crossover.

Pros: Sufficient power for two 4-ohm speakers wired in parallel. Does not overheat. Speaker level inputs with remote power make installation easy.

Cons: I can't think of any cons at this time.

Sounds great when it is working.

Written by: Nate from Ohio on September 20, 2015

Crutchfield Customer Review (What's this?)

I am impressed by the power I get from this amp however I am about to send it to get fixed for the second time within a year of having it. The first problem was a capacitor blew out and I suspect the exact same thing happened this time! Never have I had a fuse on the amp blow or any anything like that happen to try to protect the amp. Thankfully it comes with a one year warranty however it still isn't fun to pay shipping for an amp twice! I do not try to push the amp as hard as I can because I try not to damage it in any way that I could control.

Pros: Creates plenty of power for my subs.

Cons: Doesn't seem to have a very good protection system seeing that it has quit working twice now and requires it be sent to a repair shop.


Written by: joe from Alabama on June 16, 2015

Crutchfield Customer Review (What's this?)

Simply awesome amp!

Pros: Gobs of power! Looks great to boot.

Cons: none

bang for your buck

Written by: grove from kaufman texas on March 29, 2015

Crutchfield Customer Review (What's this?)

I have to say, this is a great amp. I have two kenwood 400 rms 12's wired for 2 ohms and this baby powers them perfectly while staying perfectly cool. I have all settings on amp on half and its powering my subs like a champ. Price is reasonible and shipping was like four days. No problem whatsoever with the amp. Crutchfield did and awesome job.

Pros: Simply outstanding!

Cons: There are no cons lol

Kenwood KAC-9106D

Written by: Anonymous from Senatobia, ms on February 15, 2015

Crutchfield Customer Review (What's this?)

Powerful amp. Easy to install. Small form factor. Sleek design. Excellent all around.

Pros: Everything!

Cons: None found so far.


Written by: ryan from Hawaii on January 24, 2015

Look/Design: Very sleek. Excellent looking design. Wish there was more lighting on it like the 9104 and 9105 but still very clean. Durability: Pushes a Rockford P3 12 that I wired for 4 ohms, and I push it hard. Longest use was BLASTING it for about an hour, switching between hard rock and rap. Never shut off, and when I got home I checked to see how hot it was... it was warm. Just warm. Remember it's wired for 4 ohms and not 2 so it will get hotter at 2 ohms. Features: Has low pass and subsonic filters and bass boost. Wish there was a bass remote option (knob you can run from the amp to the front of car to adjust bass) Ease of use: Easy to adjust, easy to splice RCA's into the connector, easy to hook up cables.... the same as any other good amp. Value: 1000 rms at 2 ohms and 500 rms at 4 ohms that is CEA 2006 certified for a great price! Overall: I purchased this amp because I saw it pumped out 500 rms at 4 ohms and was cea 2006 compliant. Honestly I was skeptical at first. I even made sure I could return it for free if it didn't deliver as promise. After breaking in my sub, I set the input signal(gain) to 3/4 and have the bass boost at about 1/4 and it slams my P3. Chest pounding, great quality bass! My Music preference is hard rock and rap and they both sound great. My experience: A.A. in Electronics 10 years personal car audio hobby (will update with true RMS when my works o-scope gets back from calibration)

Pros: It is a good amp that delivers as promised for a good price. I highly recommend!

Cons: No bass knob to run upfront.


Written by: Reef from Pompano Beach , Fl on December 28, 2014

Crutchfield Customer Review (What's this?)

Awesome amp :) Came with 2 12" subs and THUMPS in the trunk of my Genesis coupe ...




Written by: Certified from Knoxville, Tennessee on October 16, 2014

Crutchfield Customer Review (What's this?)

I believe this amplifier is the most amazing amp ever made. The tuning capabilities are infinite. I am able to push my 12" subs to their limits. Others can NOT believe that it is only 1000W and two 12" subs destroying their thousand dollar systems.

Pros: The capability to fine tune the sound and being able to subtract the unnecessary oscillation of the speakers when there is no sound coming from them.

Cons: I have yet to find one.

5 Stars!!!

Written by: Casper24 from Boston, mass on August 9, 2014

Crutchfield Customer Review (What's this?)

Best amp for your money! I'm very impressed. For many years I've only had jl audio slash series amps and this amp does the same and puts out almost the same quality for power and sound! I'm running a jl audio w6 v2 on a 2 ohm load and this thing feeds it more than enough power =)

Pros: Price, quality

Cons: None

Tons of power

Written by: Ben from Silvis, IL on August 7, 2014

Crutchfield Customer Review (What's this?)

Tons of Power output, doesn't kill your battery.

Pros: Stays cool with high output use.

Cons: My face plate was for a different model.

Great product

Written by: Devin from Maryland on August 5, 2014

Crutchfield Customer Review (What's this?)

Overall a great amp that is easy to inatall



Well worth the money

Written by: Degs from Regina Saskatchewan on June 25, 2014

These amps can,t be beat for the price of them, I had a Audison mono bloc amp that was suppose to be 1200 watts (RMS) end 3 times the price of the Kenwood -9106 D. I still kicking my butt for buying that Audison, It was the worse sounding amp I ever had in my life. The kenwood blows the Audison away, I only got the gian turn up not evan a quarter ways, End it shakes the whole car, Wth 2- 12 Alpine R series subs in a seal box, I have the subs wired down to 2 (Ohms) End run my car stereo at 3/4 volume all the time, When I playing my stereo, End I in my car for hours driving around, End never had a problem with it. I have install car audio for over 38 years on end off, I have had lot of kenwood mono bloc amps tough out the years, Since 1987, From a KAC-9152 D. Down to the KAC -9102 D. End they all were very good amps. With no problem with them. End really thump. you can,t go wrong buy buying one of these amps.

Pros: Easy to install, Doesn,t take up much room in vehicle, Verry clear sounding if set up properly. Good bang for the buck.

Cons: getting it fine tuned properly


Written by: Robert W from SanAntonio Texas on April 29, 2014

Crutchfield Customer Review (What's this?)

Upgraded to this amp and have been more than happy every time I get behind the wheel. Let the good times roll.




Written by: Brock from San Antonio on April 4, 2014

Crutchfield Customer Review (What's this?)

It's been working great, no blow outs and went it easy

Pros: Nice size



Hands-on research

What's in the box?

Download the Kenwood KAC-9106D manual

  • Mono subwoofer amplifier
  • Three 40 amp ATO fuses (installed)
  • 2 Terminal covers (installed)
  • 7" Speaker-level input harness
  • 2.5mm Allen wrench
  • Four 5/8" Self-tapping screws
  • Instruction manual (English/ French/ Spanish)
  • Warranty information

Product Research



CEA-2006 Compliant: CEA-2006 is a system of testing and measurement 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 standards allow consumers to compare car amplifiers and receivers under the same conditions (apples to apples). Using CEA-2006 criteria, the Kenwood KAC-9106D is rated at 500 watts RMS x 1 channel with a 76 dBA signal to noise ratio. The signal to noise ratio at the rated power output (not CEA-2006 conditions) is 100 dB.

2-Ohm Stable: The amplifier can also support a 2-ohm load; the 2-ohm power output is 1,000 watts RMS x 1 channel.

Cast Aluminum Heat Sink: The KAC-9106D utilizes a cast aluminum heat sink design to ensure the amplifier stays cool.

Protection circuitry: The amplifier features protection circuits that will turn the amp off in case of the following events:

  • speaker wire short-circuits
  • speaker output contacts ground
  • unit malfunctions and DC is sent to speaker output
  • the amp overheats

Power Indicator: When the amplifier is turned on the Power indicator (on top of the amp) lights up. This indicator turns off with the amplifier, and will turn off if the amplifier goes into protect mode.

Auto Turn-on: When using a speaker level input, the amp will turn on automatically when it senses the input signal.


Gain: To accommodate the varying range of signal levels from today's factory and aftermarket radios, the KAC-9106D features an adjustable gain control; 0.2-5.0 volts line level (RCA) and 4.0-12.0 volts speaker level.

Crossover: The built-in 24 dB/octave low-pass filter has a continuously variable crossover point; 50Hz to 200Hz. Because this is a subwoofer amp, the crossover is always engaged.

Infrasonic Filter: The 24 dB/octave Infrasonic Filter removes ultra-low frequencies that cannot be reproduced by most subwoofers. These frequencies 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 filter's crossover point is continuously variable from 20 Hz to 50 Hz.

Bass Boost: The bass boost is adjustable from 0-18dB at 40Hz.


Power Connections: The power and ground connections are 0.55" wide screw terminals. The remote turn-on screw terminal is 0.335" wide. A Phillips-head or flat blade screw driver (not supplied) is required to tighten/loosen the terminals. Spade connectors are recommended. The manual lists a minimum of 10 gauge wire for power and ground, but given the 120 amp fuse value and the current consumption specification of 65 amps, we recommend a 4 gauge wiring kit.

Speaker Outputs: There are two pair of 0.335" wide screw terminal speaker outputs; they are internally wired in parallel, making it easy to connect two subwoofers. A Phillips-head or flat blade screw driver (not supplied) is required to tighten/loosen the terminals. Spade connectors are also recommended for the speaker wires.

Line Level Input: The line input is a pair of stereo RCA jacks.

Line Level Output: The amplifier has a pair of RCA line level outputs for feeding another amplifier; it is the same signal that is input through the RCA line inputs. The amplifier's crossovers have no effect on the line level output signal.

Speaker Level Input: A wiring harness is included for the speaker level input.

Fuses: The amplifier uses three 40-amp ATO blade-type fuses.

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

Crutchfield asked  
Why did you buy this?

An affordable, reliable, high powered amp [ Owen  Jul 27, 2016 ]

4 questions already asked

Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Krissy  Feb 26, 2016 ]  Staff
No, I do not believe so based on the following. A larger amp running at 50% or so capacity, will more than likely run cooler and draw somewhat less power demand than an amp that needs to run at or near full capacity to get the same volume etc. Not an electrical engineer but it only makes sense to me. It's been a great amp and have no problems so far. We did run "all" wires at almost double the recommended size just to reduce any chance of under capacity so maybe that has helped as well. [ Jeff  Jan 12, 2016 ]
No , this amp is just right for your needs , will push your sub to its full potential [ ROBERT E  Jan 09, 2016 ]
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Krissy  Dec 05, 2014 ]  Staff
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Krissy  Jun 20, 2014 ]  Staff