Down4Sound JP84 - BLUE | 400W RMS 4CH AMPLIFIER

(71 reviews) Write a Review
  • Down4Sound JP84 or 400W 4 Channel Car Amplifier
  • Down4Sound JP84 or 400W 4 Channel Car Amplifier
  • Down4Sound JP84 or 400W 4 Channel Car Amplifier
  • Down4Sound JP84 or 400W 4 Channel Car Amplifier
MSRP: $299.99
— You save $140.00


Elevate your car audio experience with the DOWN4SOUND JP84 BLUE, a full range digital multi-channel amplifier meticulously crafted to deliver exceptional sound quality and versatility. Engineered for precision and power, this amplifier is designed to handle the demanding needs of your mids and highs with ease.

Key Features:

  • Stable into 2 Ohm Stereo or 4 Ohm Bridged
  • High-Speed MOSFET Power Supply
  • Variable High Pass Filter
  • Variable Low Pass Filter
  • Crossover Multiplier X10
  • Band Pass Filter Capable
  • 4 Way Protection Circuits
    • Thermal, High & Low Voltage, Speaker Short, and DC


  • Power Output:
    • 120W x 4 @ 14.4v
    • 90W x 4 @ 14.4v
    • 284W x 2
  • Frequency Response: 10Hz - 40 KHz
  • High Pass Filter: 20Hz - 800Hz (Multiplier: x1, x10)
  • Low Pass Filter: 50Hz - 800Hz (Multiplier: x1, x10)
  • Input Sensitivity: 6V - 0.2V
  • Signal to Noise Ratio: 95dB <
  • Total Harmonic Distortion: < 0.1%
  • Fuse Rating: 60A
  • High Purity Copper Printed Circuit Board
  • 4 Gauge Power / Ground Terminals
  • Dimensions: 7.87" L x 7.4" W x 2.24" H

Pair the JP84 with a JP8 for optimal sound quality and results. The DOWN4SOUND JP84 is meticulously engineered to deliver unparalleled performance, making it the perfect choice for audiophiles seeking precision and power in their car audio systems.

View AllClose

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
View AllClose

71 Reviews

  • 4


    Posted by Eliot Tapia on Mar 28, 2024

    Great quality

  • 5

    great power

    Posted by David Miranda on Mar 17, 2024

    Great amp works great for my JFX 6.5 comp and JBL 6x9

  • 5

    Amazing amp

    Posted by Valo on Mar 14, 2024

    Got this amp for my tweeters and they scream now with this amp perfect for them highs!

  • 5


    Posted by Robert Vanderlick on Dec 01, 2023

    This amp is running 4 100 watt rms tweeters on my front and rear, they sound amazing and this amp is the perfect combination for these tweeters, using sundown SA v2 tweeters.

  • 5


    Posted by Omz on Jul 13, 2023

    Love this lil beast would like to know what size is the terminal screws on this amp? Overall I love the amp might buy a 2nd one

  • 5


    Posted by William Farland on May 23, 2023

    Love this thing, lots of power in a little package. Perfectly matches my JP23 v2

  • 5

    Great product

    Posted by david marks jr on May 19, 2023

    Fast shipping

  • 5

    Great amplifier so far

    Posted by TRIPLE GGG's AUDIO on May 19, 2023

    Got it on 4 DS18 6.5 IN MY TRUCK. EXTREMELY LOUD AND CLEAR !!!

  • 5

    D4S Difference

    Posted by neal anderson on Apr 04, 2023

    I have this amp pushing 2 Machete MM-60 Neo 6.5s and 2 DB Arnold 6.5s and it's unreal how loud they all get. Definitely recommend if you are in the market for a 4 channel, will be upgrading to a jp234 soon and putting this on tweeters.

  • 5

    Beautiful looking amp

    Posted by Brian on Mar 13, 2023

    D4S did a fantastic job on this amp. puts out plenty of power, and looks amazing. I have the JP8 on the way to match.

View AllClose