Kenwood KAC-5001PS

Mono subwoofer amplifier — 500 watts RMS x 1 at 2 ohms (Factory Refurbished)

Item #: 613KAC5001

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16 Reviews

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Power and performance for your subwoofer system

Kenwood's Performance Series KAC-5001PS subwoofer amplifier can take care of your sub system's power requirements, and then some. With up to 500 watts RMS of power, you'll get clear, loud, and rockin' bass in your car. A rugged heat sink keeps this compact amp running at optimal temperatures, even when you're pushing your system hard.

Versatile adjustments and setup

A built-in low-pass filter lets you adjust the output 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 fatten up the sound. An aluminum cover plate protects the amp's controls and connections, giving your installation a professional look.

Package deal: Save money when you buy this amp as part of these Kenwood dual 10" or dual 12" bass packages.

Product Highlights:

  • mono subwoofer amplifier
  • 300 watts RMS x 1 at 4 ohms (500 watts x 1 at 2 ohms)
  • CEA-2006 compliant
  • variable low-pass filter (50-200 Hz at 24 dB per octave)
  • bass boost (0-18 dB at 40 Hz )
  • Class D design
  • preamp inputs
  • fuse rating: 30A x 2
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 9-13/16"W x 2-1/4"H x 7-9/16"D
  • warranty: 90 days
  • 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.

Kenwood KAC-5001PS Reviews

Average Customer Review:

16 reviews
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Lots of power

Written By Joey, Bayminette,al on Sunday, November 08, 2015

  • Not Rated
    "Coolness Factor"
  • Not Rated
    Build Quality
  • Ease of Use
  • Sound Quality
  • Value

Amazing amp i have it hooked to 2 12 inch kickers and ive competed with soundqubed systems dont let the size fool you ive beat the cone out if a polk audio 8 with this thing

Pros: Beats like a 1500 watt

Cons: None


Written By Cmatthews8956, Brandon,Fl on Sunday, April 05, 2015

This amplifier packs a hell of a punch, it is driving 2 Phoenix Gold 12'' Subs in a box in my trunk and sounds awesome, along with Kenwood Touch screen deck, the system is putting out over 700 watts which is more then plenty. Great Amp for the price and would highly recommend to anyone!!

Pros: Awesome and compact!!

Cons: None


Written By Anonymous, Georgia on Tuesday, March 17, 2015

Crutchfield Customer Review (What's this?)

Hooking this up to a Rockford and Fosgate 10" with a Kenwood head unit, love it!

kac 5001ps

Written By Drew, Hawaii on Friday, March 13, 2015

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

Have this hooked up to a single 8" polk sac 4ohm. The amp is rated double the rms of the polk sub, stay consertive with the gain ad you'll be ok. Pounds the 8 louder than I expected.

Pros: Good looking solid amp. Doesn't get hot.

Cons: Subsonic filter would be nice but no biggie.

Very Good

Written By Kyle R., South Carolina on Tuesday, January 20, 2015

It is a very good product, sounds great. Would recommend to all. Driving 2 JL Audio 12WXv2-4 subs ported box in my 01 honda civic sedan.

Nice little amp

Written By M. Doskocil, Cols., OH on Saturday, November 01, 2014

Crutchfield Customer Review (What's this?)

Decent enough amp. I always use the RCA inputs, so keep that in mind. Probably not actually as loud as they claim (300 to 500 watts), but with the input tuned in to at or about 11:30, this is a clean robust amplifier. Trying to drive a DVC RF 8" sub in a sealed enclosure & found out quick I'm going to need a bigger sub. So, if you plan on driving just one speaker with this amp, and you want the cleanest signal possible, definitely go with a 10 or 12 inch sub. And I'm a big fan of sealed cabs. I just find they sound that much deeper,. & cleaner (again with that word). What else can I say? Quite a bargain at $150. Wish they would have put a fan in her though. Oh well. What can you expect for less than $200? Nice bargain, worth the cash.

Pros: Clean, somewhat loud. Easy to wire up.

Cons: No fan. not quite as loud as Kenwood claims (probably closer to 150 to 200 watts at 4 ohms).

Great Value, Great Tone

Written By JohnH., Boston, MA on Wednesday, April 09, 2014

The only one star review on here... Sounds like he wires his R/L Preamps to his +/- speaker leads.

My opinion? This little thing packs quite the punch. Clean bass in a very small package. It looks nice, simple power on indicatior light that is easy to spot, the LPH works great, I enjoy everything about this amp so far. For the price, I wouldn't hesitate to reccomend this to my friends looking for a smaller one off sub set up

2009 Mini Cooper Clubman Kenwood 5001 JL Audio TW3 12" Sealed enclosure Pioneer speakers all around.

Pros: Small, clean sound, easy install, not an eyesore

Cons: None?

compact with big bass

Written By compact with big bass, shiprock New Mexico on Thursday, March 27, 2014

This amp is powering my rockford fosgate p2d2 12 and it pushes it effortless in a ported enclosure

Nice smp

Written By Steve, Fischer, TX on Tuesday, March 04, 2014

Crutchfield Customer Review (What's this?)

Works great and ordered another similar to it but for door speakers.

Pros: Performs well and stays cool

Cons: None

small but mighty

Written By matt, keene nh on Saturday, February 22, 2014

I have this amp hooked up to two infinity ref1260w in a sealed box and it pushes them great. Had it up halfway for 30 mins and it didn't even get warm can't wait to break subs in and fine tune it to see what this bad boy can do. Also for an amp that puts out this power its tiny compared to other amps in this wattage.

Pros: Size and power

Cons: Can't think of any

For its compact size, it does Great!

Written By Justin, Fort Worth, TX on Monday, February 10, 2014

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

I have it powering a Kicker 10C124 12" 4ohm sub and it supplies all the power the sub asks for. It has just enough and the correct adjustment knob options to not cunfuse or intimidate a person that may be a first timer new to a speaker/sub install and adjustment. Its a small unit, so it doesn't take up alot of space, and, only having a small amount of room in my single cab truck, it was Exacly what I needed. I push the sub really hard and the Amp seems to barely run warm, and if I remember correctly, I have the gain at probably only 50-60% . Later this week I am going to wire in a Kenwood KFC-W12PS 12" 4ohm sub in parallel with the Kicker 12" its currently pushing. I do not doubt the amp at all for supplying the power that I will need to get the sound that I'm after.

Pros: Small/Compact Design. Right choice of adjustment knobs to get a good sounding sub adjustment.

Cons: None to speak of


Written By Lenqt1, Kansas City, MO on Saturday, February 01, 2014

Crutchfield Customer Review (What's this?)

Clean sound and decent power.

Pros: Compact size.


Written By 4fanman, Saint Michael, ND on Monday, December 30, 2013

Crutchfield Customer Review (What's this?)

Wow. A ton of clean power

Pros: Perfect amp

Cons: None

Great Amp

Written By Re, Honolulu, Hawaii on Friday, October 18, 2013

Awesome amp, It slams my 12" re sub like nothing...

Pros: Powerful amp.

Cons: Its only 1000 watts

Kenwood KAC-5001PS

Written By Britt, Henrico Va. on Thursday, August 29, 2013

Crutchfield Customer Review (What's this?)

I purchased this amp to compliment my Kenwood DVD player and my Kenwood 12" sub and I was really disappointed. I like Kenwood products and have never had an issue with anything I have ever purchased manufactured by Kenwood but this amp kept turning off when I turned up the volume. I checked the settings with customer support and all settings and connections were proper. Maybe I just received a bad one. I returned it for refund.

Pros: Price

Cons: Kept shutting down.

Kenwood KAC-5001PS

Written By Anonymous, Bethel, CT on Wednesday, March 06, 2013

Crutchfield Customer Review (What's this?)

A good quality amp. Gets the job done well.

Hands-on research

What's in the box?

Download owner's manual

  • Refurbished mono subwoofer amplifier
  • 2 End caps (installed)
  • Two 30-amp fuses (installed)
  • 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 methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for determining 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 4-ohm load, with 1% or less Total Harmonic Distortion (THD) plus noise, and over a frequency range of 20 Hz to 20 kHz, when applicable (20-200 Hz for this subwoofer amp). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4 ohms. CEA-2006 allows consumers to compare car amplifiers and receivers on an equal basis. Using CEA-2006 criteria, the Kenwood KAC-5001PS is rated at 300 Watts RMS x 1 channel with an 83 dBA signal to noise ratio.

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

  • Power: 500 watts x 1-channel (into 2Ω, at 100 Hz, no more than 1.0% THD, 14.4 volts)
  • Signal to Noise Ratio: 100 dB (at rated power)

Mono-Power Amp Design: The KAC-5001PS is designed with specific features to power your subwoofer(s) with a frequency range between 20 and 200 Hz. This amplifier is not designed to power a full-range speaker.

Class D Amplifier Design: The amplifier design is Class D, which uses digital switching power supplies. The result is much higher efficiency (less heat generated) than Class AB.

Low-Pass Filter: The built-in 24 dB/octave low-pass filter is continuously variable from 50 to 200 Hz. The crossover is always engaged (it cannot be bypassed).

Bass Boost: The bass boost circuit is centered at 40 Hz; boost is variable from 0 to +18 dB.


  • Input Sensitivity: 200mV-5V; continuously variable
  • Low-Pass Frequency: 50-200 Hz; continuously variable
  • Bass Boost: 0-18 dB; continuously variable

Inputs and Outputs:

  • Signal Input: one pair of RCA inputs
  • Power: screw terminal; accommodates spade connector up to 0.55" wide
  • Ground: screw terminal; accommodates spade connector up to 0.55" wide
  • Remote Turn-on: screw terminal; accommodates spade connector up to 0.335" wide
  • Speaker Output: one pair of screw terminals; accommodates spade connector up to 0.335" wide
  • Fuses: two 30 amp ATO 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.