Mobile Electronics› Power Accessories

JL Audio

4-Channel Full-Range Amplifier

$299.99

SKU: JD400/4

In Stock
In Stock
Ships by Aug 31
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The JL Audio JD400/4 is a 4-channel full-range amplifier designed to deliver exceptional audio performance in vehicles. It utilizes JL Audio's NexD™ high-speed switching technology for efficient operation and high fidelity sound.

This amplifier offers versatile output configurations, providing 75 watts RMS x 4 at 4 ohms or 100 watts RMS x 4 at 2 ohms. It can also be bridged to deliver 200 watts RMS x 2 at 4 ohms, making it suitable for a variety of speaker and subwoofer setups. The JD400/4 includes a 12-decibel/octave filter and comes with a 2-year warranty.
Show original supplier description
The JL Audio JD400/4 is a 4-channel, full-range Class D amplifier engineered to provide impressive audio power and clarity for car audio systems. This amplifier leverages JL Audio's exclusive NexD™ high-speed switching technology, ensuring high fidelity and efficient operation. With its compact dimensions of 9.50 x 7.50 x 2.10 inches (242 x 190 x 53 mm), the JD400/4 offers considerable installation flexibility, fitting into a wide range of vehicle locations. It delivers a robust 75 watts RMS to each of its four channels when driving 4-ohm loads, and steps up to 100 watts RMS per channel into 2-ohm loads at 14.4V with 1% THD. For even more power, the amplifier is fully bridgeable, capable of producing 200 watts RMS x 2 at 4 ohms. To further enhance system tuning and compatibility, the JD400/4 includes a 12-decibel/octave filter. JL Audio backs this product with a 2-year warranty, underscoring its commitment to quality and durability.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandJL Audio
Part NumberJD400/4
CategoryMobile Electronics

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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