JD Amplifiers

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A pair of JD amplifiers stacked on each other on a glossy dark surface.

JD: Affordable excellence for a wide range of system applications.

JD amplifiers apply our core amplifier technologies and a generous feature set to deliver fantastic value. The amplifier section is 100% JL Audio, with our exclusive NexD™ switching technology for superior fidelity and efficiency. The latter reduces heat output, making the compact dimensions of the JD amplifiers possible.

Features include automatic turn-on capabilities (via signal sensing and DC-offset sensing) and dual-range differential-balanced inputs to combat noise and maximize compatibility with a wide range of signal types. Easy-to-use LED clipping indicator rings surrounding the input sensitivity controls streamline the input level setting process. All models include 12 dB/octave filters that are fully adjustable from 50-500 Hz. Monoblock models also include a bass boost EQ and a port for an optional RBC-1 controller to adjust the subwoofer level from the driver’s seat.

Let’s power up your system!

NexD Technology

Exclusive high-speed switching circuitry efficiently generates loads of clean power, with less heat output and burden on your vehicle’s electrical system.

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LED Clipping Indicators

Quickly and accurately set the amplifier’s input sensitivity, without any special equipment, in three easy steps.

A closeup view of the LED clipping indicator for the sensitivity controls on a JD car amplifier.

Step 1

Play a sine-wave test tone through the audio system.

Step 2

Set the source unit at 3/4 of full volume.

Step 3

Increase the “Input Sensitivity” control until the LED is solidly lit, indicating maximum, unclipped output.

EASY!

That’s it! The input sensitivities are now accurately set.

Dual-LED Status Reporting

Separate, top-mounted LEDs display the amplifier’s overall condition and status.

A JD500/1 amplifier highlighting dual LED feature on a vibrant blue background.

Technology

Instead of relying on antiquated, inefficient amplifier designs, JL Audio JD amplifiers employ our exclusive NexD™ switching technology to achieve total amplifier efficiencies exceeding 80%. This means they run much cooler and put less strain on your electrical system than a conventional amplifier. It also allows for very impressive power output from a very compact amplifier, which greatly simplifies installation in tight spaces.

Differential-Balanced Inputs

NexD™ Switching Technology