Down4Sound JP43 ORANGE | 4300W RMS Amplifier

(24 reviews) Write a Review
MSRP: $1,299.99
— You save $525.00


JP 43 Amplifier: 4300W PLUS RMS MONOBLOCK Amplifier

We introduce the JP-43 , the 4300 WATT RMS (PLUS WAY more if you have a solid electrical) monoblock amplifier. It's like an 4k (4000 WATT) amplifier just with WAY more power. This 4000 watt amp is great for a serious basshead looking to bang some monterous , storm stomping bass out of their subwoofer.. REMEMBER, This isn't your typical 4000 WATT plus amplifier, we upgraded the input to 2 power and grounds, added the best RCA's true tiffany, the internal fan now stays on as soon as you turn on the amplifier to keep it cooler longer. The color is Cream Orange.


THIS MEANS YOU NEED A BIG 3, UPGRADED ALT, AND RESERVE BATTERY(s) to support this amplifier and any others you may have in your setup. If you do not have the proper electrical before installing this amplifier, you will not have a warranty. 

Our Ratings on Power for the JP43: TESTED at 14.4V @ 1% THD

  • 1-ohm rating: 4300 WATTS RMS 
  • 2-ohm rating: 2300 WATTS RMS 
  • 4-ohm rating: 1300 WATTS RMS

Other Specifications on the JP43:

  • Frequency response : 14Hz –260Hz
  • Signal to noise : 89dB
  • Damping factor : 400 <
  • Efficiency at 4ohm : 94%
  • Input sensitivity : 6V –0.2V
  • Subsonic filter : 10Hz –50Hz
  • Low pass filter : 35Hz –250Hz
  • Phase : 0 –180 degree
  • Strappable connection
  • Working to half ohm in speaker connection
  • Clipping indicator
  • Fusing: 400A TOTAL | 200A each positive input ( x2)
  • BT Remote control with Voltage and Temperature display, Clipping indicator.
  • C type power connection for BT remote
  • 4 ga speaker output
  • 2 x 0ga power inputs
  • Operating voltage : 9 to 16 Volts
  • Dimensions : 15.75 L x 9.37 x 2.64 INCHES 



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Warranty Information

Warranty Information

Your new Down4Sound product is covered by 1 limited warranty if purchased from Down4Sound or an authorized Down4Sound dealer. This warranty does not cover improper installation, accidental damage, misuse, abuse, improper wiring, operation of unit outside of listed specifications, or any product that has been modified or repaired by anyone other than Down4Sound. Your warranty covers defects in materials and/or workmanship ONLY and is not an insurance policy. The warranty only covers the original owner of the amplifier.

All warranty returns must be accompanied by the original sales invoice or receipt. You must contact us to request an RMA number prior to sending any returns via the RMA request form on our website. You are responsible for the cost of shipping your product back to us for warranty examination. If your product is covered under warranty, shipping back to you will be at no charge to you – if your product is replaced/repaired outside of warranty you must pay for return shipping and repair bill prior returning of the product or if no defect is found you are required to pay for return shipping only.

At the sole discretion of Down4Sound your product will be either repaired or replaced when it is being covered under warranty. In the event of shipping damage due to improper packaging on products being returned to Down4Sound the customer is liable for the cost of all damages, necessary repairs, or replacement. Be sure to properly pack your return!

*  Extended additional warranty purchased on amplifiers take in affect from the date of purchase and must also be stated on orginal sales invoice or receipt. 



Refund/Return Policy:


Down4Sound - Hours of Operation

Monday 6am - 9pm PDT
Tuesday 6am - 9pm PDT
Wednesday 6am - 9pm PDT
Thursday 6am - 9pm PDT
Friday 6am - 9pm PDT
Saturday 8am - 4pm PDT
Sunday Closed
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24 Reviews

  • 5

    Posted by Michael Beckham on Aug 26, 2023

    Awesome amplifier, played a little 4 hours straight with no problems.

  • 5
    Very strong

    Posted by Kelvin Flowers on Aug 05, 2023

    I would recommend this amp very strongly and I'm going to order 2 4 channels soon.

  • 5

    Posted by Derek Foster on Jul 07, 2023

    Amp is amazing has tons of power an looks amazing also but only problem I had was that it didn't come with a bass knob which left me unable to use it but I did have one overnighted which wasn't cheap but over all amazing product and I will continue to support JP and buy as many products of his I can. The amp not having a bass knob isn't his fault but I am still waiting for customer service to send me that an the right size wire.

  • 4

    Posted by Derek Foster on Jun 28, 2023

    I bought this amp to replace my SIA3500 an so far I'm impressed with it but what I'm not impressed with is with whoever I called at the shop I bought 1/0 wire also with the amp an received 4g an no bass knob with the amp which is a huge inconvenience so they said they would send me out everything but only received one color wire no bass knob so I ended up having to overnight a bass knob while was $179.00. An still don't have the other wire or bass knob. I know they may be busy but just sucks when you make plans for something to not get what you're waiting for.

  • 5

    Posted by Lester Bonnette on Jun 21, 2023

    Just installed a week ago out of every amp I've hooked up to a set of skar audio 18s within the past year this has been the only amp ive actively been able to get the subs to move very happy with my purchase will be building my system up with your products thank you for having a product that is completely up front with accurate wattage and information

  • 5

    Posted by Brad Ades on Jun 09, 2023

    Extremely powerful

  • 5

    Posted by Roy Herrera on Jun 03, 2023

    I recieved my amp today and it’s connected…so far it’s amazing…the beauty of it…great sound…great bass…a bad ass bass knob…the plexi glass bottom…this thing is amazing….can’t go wrong with these amps….I have it currently on 2 Xv3 15s duel 1s wired to 1ohm …they love it…beautiful product…down 4 sound 4 the win…keep up the excellent merchandise JP AND STAFF…shipping was fast and great…Thanks again

  • 4

    Posted by Michael Van Horn on Apr 22, 2023

    I was pretty bummed about two scratches when I opened the box, which the box was packaged well, so idk if the tools inside scratched it or what. Haven’t hooked it up yet. But other than that it was delivered in 3 days.

  • 4
    awesome amp

    Posted by Juan Navarro on Apr 05, 2023

    i gave it a 4 star because the bass knob is not good, hard to connect to amp and instructions on manual are difficult to understand

  • 4
    Great Amp

    Posted by Harold Cheatham on Mar 07, 2023

    Amp works great, wish I could say the same for the bass knob, it was dead out of the box. Customer Service hasn't been what I'd call great either, but we'll see . Amp would be fantastic is everything worked!!

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