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Customer Ratings & Reviews

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Customer reviews

Rating 4.7 out of 5 stars with 552 reviews

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Rating by feature

  • Value

    Rating 4.6 out of 5 stars

  • Quality

    Rating 4.7 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

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93%would recommend to a friend

Customers are saying

Customers highly value the CX 400W Class D Digital Mono Amplifier for its power, sound quality, compact size, and affordability. They appreciate that it provides enough power to drive their speakers effectively and delivers great sound quality, making their music sound clear and detailed. The amplifier's compact design is also a plus, as it doesn't take up much space, and its reasonable price point makes it an attractive option for those looking for a good-quality amplifier without breaking the bank.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 1 Showing 1-20 of 552 reviews
  • Pros mentioned:
    Ease of use, Power, Sound quality

    Rated 5 out of 5 stars

    Reliable and dependable

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I purchased this unit to go along with a 10” Kicker subwoofer. It works great! Setup is always a challenge for car audio, but in this case the clear instructions helped make it a straightforward process. The amp is easy to adjust with its frequency and loudness adjustments. I have had this unit installed in my 1979 Toyota Corolla a while now and it has never let me down. It provides plenty of power to the subwoofer and allows me to feel the thump of the bass as I drive - even over a loud exhaust system.

    I would recommend this to a friend
  • Pros mentioned:
    Size, Sound quality

    Rated 5 out of 5 stars

    Great amp for tight space.

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great amp to drive a single 10 woofer (massive audio shallow mount). Have this in a Tacoma for my daughter and it sounds great! Its compact in size to fit under a bench seat in a standard cab without compromise to power. Highly recommend.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Kicker amp and sub

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I had this amp installed the other day with the 12’ down firing sub from Kicker. It sounds amazing and delivers great bass. The amp was installed under my front passenger seat and you can’t even notice it’s there. There is a big difference from hearing the demo audio system in the store than from hearing it in my car. I 100% recommend

    I would recommend this to a friend
  • Pros mentioned:
    Size

    Rated 5 out of 5 stars

    Sounds great

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works great pushes my highs and subs fits perfectly under the seat out the way and snuggled with the brackets in the base. The 10inch sub kicker compC is perfect fit.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Powerful AMP! Great Power Output

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great bang for your buck! High quality and great RMS output! I powered one kicker 10 inch subwoofer and am amazed!

    I would recommend this to a friend
  • Pros mentioned:
    Sound quality

    Rated 5 out of 5 stars

    Excellent Amplifier

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The amplifier has exceeded my expectations with it’s delivery of low end frequencies and over all performance. My friends and neighbors had commented on the awesome sound of my new HD system that augments the amazing low end with this amplifier. The ten inch sub woofer really brings out the full low end frequency response that comes from this kicker amplifier.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great small amp

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Powerful amp works well and small footprint, will buy another one

    I would recommend this to a friend
  • Pros mentioned:
    Power

    Rated 5 out of 5 stars

    The perfect amp to power one Kicker CompC 10" sub

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I picked this Kicker CXA400.1 mono amplifier to power a Kicker CompC 10" subwoofer I have mounted in the trunk of my 2017 Honda Civic EX Sedan. This amp works fantastic and puts out lots of power. I had a Best Buy installer install the amp along with the sub. I really like how they mounted the amplifier and it fitted in the left hand corner of the trunk real nicely. This makes for a nice upgrade from stock. I did buy the Kicker Bass Knob (Model: 46CXARC) to control the amount of bass.

    I would recommend this to a friend
  • Pros mentioned:
    Power, Size

    Rated 5 out of 5 stars

    Compact power

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    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Powers my massive audio sub effortlessly! Also-ran doesn't take up too much space!

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Kicker amp

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Real deep bass real hard solid punch perfect for subwoofers perfect for base perfect for competition perfect for car shows perfect for anybody who likes beat in their car thank you very much five stars

    I would recommend this to a friend
  • Pros mentioned:
    Power

    Rated 5 out of 5 stars

    Bass amp

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works great . Kicker is strong . Very nice amp....

    I would recommend this to a friend
  • Pros mentioned:
    Sound quality

    Rated 5 out of 5 stars

    Great product

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great Amplifier sounds very good with my 12 alpine subwoofer i like and is small fit perfect on my truck

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Amazing Amp for Honda Accord

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    KICKER has always made great products but this amp hooked up to my son's 2008 Honda Accord easy

    I would recommend this to a friend
  • Pros mentioned:
    Power, Price

    Rated 2 out of 5 stars

    Great while it Lasted

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    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Two 6.5 subs installed in a Rockville dual sub box. It promptly fried two Lanzar parallel wired 6.5" woofers. As the woofers bit the dust "breaking it down' on Baby Bash so did the Kicker amp. Most amps simply shut off and reset. Not the kicker. For what I paid for this 400 I could have got two Boss 1500s. Which subsequently I purchased and only need one! No wonder mobile audio doesn't offer a warranty. For $170 which is premium dollars this is the most highly rated and expensive amp in it's class. For that price a warranty should be lifetime.

    No, I would not recommend this to a friend
  • Rated 5 out of 5 stars

    Packs a powerful punch for a small price

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought this to be paired with a 10" Kicker CompC sub in a Metra sub box as an entry level sub system for my PT Cruiser. I mounted the amp to the side of the sub box with ease. I have been continually surprised by how much of a powerful punch this amp is able to provide. This is the second amplifier in my system, as I currently have a four channel amp hidden under the passenger seat for the speakers and this amp drivers my sub. This amp has always got enough power, and would supply a bigger 12" CompR with ease. My next upgrade will be to switch to dual 12" CompR's and stick with this amp to drive it.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Amp

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    They took care of me . Clean no mess after installing

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Not terribly priced but def a lil over priced

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Perfect with my 12” down force kicker set up being I have a double stroller in my trunk along with it.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great value

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I bought this mono-amp to pair with a 12 inch Comp-R Kicker single sub. Its amazing so far. Ive had no issues, and the RMS rating was certified tested at 498 RMS, well-above the 400 rating on the box. I absokutely recommend this if you’re on a budget/pushing a single sub.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Awesome little amp!

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Kicker has been a great brand for decades and are still on it. This little amp pushes my bridged SVC 12" sub easily. I haven't tried it with a DVC and don't really feel the need to. For my application this amp is perfect! It's small (to fit in the recess in my trunk) and powerful. Do yourself a service and get this one instead of a cheapo. You won't regret it.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Amp It UP

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I would be hard pressed not to increaes the rating to 4. I still say if you pay more, you get more... but than thats true for all things in life. So in a nutshell.

    I would recommend this to a friend
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