Price Match Guarantee
JL Audio
Price Match Guarantee
AVLeaderz Cares! We are dedicated to offering the best value to our customers, always. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a qualifying online retailer or at a local retail competitor's store. Here's how:

  • If you find a qualifying lower price online, call 1-866-859-0896 and provide a customer service agent the web site with the lower price.
  • On qualifying products, AVLeaderz will verify the current price to complete the price match.
Exclusions may apply including, but not limited to, items sold by Marketplace vendors, competitors' service prices, special daily or hourly sales, and items for sale the Sunday before Thanksgiving Day through the Monday after Thanksgiving. More Details

JL Audio JX400/4D, JX Series Class D Full-Range Amplifier, 400W

SKU: JL-JX400/4D-OB UPC: 699440983617
Out of stock
Discontinued Item

The requested item has been discontinued.

Please consider the below similar item.

General Features:

  • JX Series 4-Channel Class D Subwoofer Amplifier
  • RMS Power Rating @ 4 Ohms (14.4V): 70 watts x 4 Channels
  • RMS Power Rating @ 2 Ohms (14.4V): 100 watts x 4 Channels
  • RMS Power Rating @ Bridged (14.4V): 200 watts x 2 Channels
  • RMS Power Rating @ 4 Ohms (12.5V): 50 watts x 4 Channels
  • RMS Power Rating @ 2 Ohms (12.5V): 80 watts x 4 Channels
  • RMS Power Rating @ Bridged (12.5V): 160 watts x 2 Channels
  • Unregulated PWM switching type power supply
  • LED power (green) and protect (red) indicators
  • Soft start turn-on prevent clicking and popping when system turns on
  • Speaker-level (high-level) inputs with included harness
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heatsink for effective heat dissipation
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Selectable input mode: 2 Ch. / 4 Ch.
  • Input Sensitivity - Low Level Input: 200mV-4V
  • Input Sensitivity - High Level Input: 2.0mV - 10.0V
  • Selectable filter mode: HP / Off / LP
  • Variable cutoff filter: 50 - 200 Hz, 12 dB/octave
  • Frequency Response: 20 - 20,000 Hz
  • Total Harmonic Distortion (THD): <1%
  • Signal to Noise Ratio: >93 dB
  • Damping Factor @ 4 ohms: >60 @ 4 ohms
  • Fuse Rating: 40A x 1 inline (not supplied) 
  • Weight: 4.80 lb

WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to

www.P65Warnings.ca.gov