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Harmony Audio

Harmony Audio HA-A400.4 Car Stereo Alloy Amp 4 Channel 800W Full Range Speaker or Sub Amplifier

    • Based on 34 reviews
Condition: New
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$109.95 Why this price?
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Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by HiFi-Soundconnection
Arrives May 21 – May 23
Order within 6 hours and 30 minutes
Available payment plans shown during checkout

Size: HA-A400.4


Color: Single Amp


Features

  • 800W PEAK POWER: With a peak power output of 800 watts, this amplifier delivers ample power to drive your speakers and subwoofers, ensuring a robust and clear audio performance in your vehicle.
  • 1-OHM STABILITY: Crafted for optimal performance, this amplifier operates at 1 Ohm stable impedance, providing a reliable and consistent power supply to your subwoofer for deep, resonant bass. Included with the amplifier is a dedicated bass remote, giving you hands-on control over your bass levels. Fine-tune the audio output to match your preferences and the demands of your music.
  • SMART POWER CONTROL: Solve the challenge of finding a switched 12-volt wire with Harmony Alloy Amplifiers. Control the amplifier via DC voltage offset or the traditional 12-volt switched remote turn-on lead, providing versatility and ease of use.
  • INNOVATIVE DAISY CHAIN FEATURE: Stand out with the exclusive ability to daisy chain a 2nd Harmony amplifier or accessory. Utilizing the empty remote terminal as a 12-volt switched output, it opens possibilities for controlling additional devices with low amperage triggers, enhancing your music experience.
  • REMOTE BASS CONTROL: Enjoy convenient bass adjustments from the driver's seat with the included Bass Remote Controller. Featuring a 0 to 12 dB boost range and a blue LED status light, it allows precise tuning and quick visual confirmation of the amplifier's status.

Item Dimensions LxWxH: 10.34 x 8.06 x 4.44 inches


Voltage: 12 Volts


Manufacturer: Harmony Audio


Mounting Type: Surface Mount


Brand: Harmony Audio


Product Dimensions ‏ : ‎ 10.34 x 8.06 x 4.44 inches; 4.5 Pounds


Date First Available ‏ : ‎ July 7, 2020


Manufacturer ‏ : ‎ Harmony Audio


Best Sellers Rank: #204,302 in Electronics (See Top 100 in Electronics) #996 in Audio Component Amplifiers


#996 in Audio Component Amplifiers:


Customer Reviews: 3.9 out of 5 stars 34


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 21 – May 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Similar Products

Top Amazon Reviews

    • Great sounding amp for the price
Review Image by SH SH
Review Image by SH SH
Review Image by SH SH
Review Image by SH SH
Using the "Harmony Audio HA-A400.4" to power (4) JBL Club Series Speakers New Audio System: Alpine iLX - 507 (head unit) JBL Club Series 602C - 6 1/2" Speakers [front in-door] (Amazon) JBL Club Series 622 - 6 1/2" Speakers [rear in-door] (Amazon) Harmony Audio HA-A400.4 AMP for all door speakers (a CLEAN sounding amp for $119.00 on Amazon) One (1) NVX QBUS10P Under-seat Subwoofer (Amazon) Three (3) Monoprice Premium Audio Cables (Amazon) (cleans up sound from head unit to amp/sub) Two (2) boxes of Noico 80 mil 10 sqft car Sound Automotive Sound Deadener, Audio Noise Insulation and dampening inside doors (Amazon) (Makes the speakers sound great) ... show more
Reviewed in the United States on July 25, 2023 by SH SH
    • Sounds great and powerful
Highly underrated amp. Buy them now before they go up like every other amp . I can remember when orion , JL and hifonics were overpriced. But before the name was known it was like any other amp..you know , everyone talked bad about it till they actually tried it. Same goes for the harmony audio line. It's new . Has no name recognition. But I can assure you it won't be long these amps will be skyhigh . Its just a matter of time. ... show more
Reviewed in the United States on May 3, 2023 by Bigdaddydeas
    • Don’t buy this trash
After receiving an amp that blew up when hooked up, I warrantied the item. I had to pay to ship it back. The second amp I received had two channels that were scratchy sounding. Now they won’t return my email. Save your money and buy something nicer. It’s not worth the time.
Reviewed in the United States on October 16, 2021 by IKnowMoreThanYou
    • Amazing amp
Freaking amazing. Ive had it on 4 harmony 6.5" midranges and now have it powering 2 10" kicker compc both at 2ohms. And hitting hard as hell. Amp gets a lil warm after some hard abuse but never hot or go into protect. 100% recommend. Will be doing a full Harmony Audio build.
Reviewed in the United States on March 20, 2023 by Brandon M.
    • HA-A400
Was not what I expected... Doesn't sound to bad but I was expecting a lot more power from the amplifier! I have the 1500W harmony audio running 2 15's and I'm very satisfied with it,this is why I'm a lil disappointed with this amo...
Reviewed in the United States on August 10, 2022 by Brian
    • Good when it works.
Goes into protection mode and overheats but I've checked my wiring and ohm loads so I can't leave a good review. It works sometimes and sometimes it shuts down when it's being played somewhat loud. Just normal play. Annoying af 🤷♂️
Reviewed in the United States on October 9, 2021 by Wesley N. Pugh
    • Disappointing
Amp died in less than a month
Reviewed in the United States on July 9, 2021 by Eric Ashemore
    • These amps pack a punch!
All amps in this line up seem to be well underrated. I am pushing a pair of 160w rms components up front, and using the rear channels for a 450w rms 12" @ 2ohms. It pushes it all and sounds awesome doing it. It gets a little warm pushing a sub at 2 ohms, but not too bad. I also have the bigger 1500.1 for a Comp Q that I am in the process of installing. Definitely recommend this company amp lineup. But the prices will probably go up...these are up there with some of the pricy big name amps. ... show more
Reviewed in the United States on July 5, 2021 by Joel Roy

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