JL Audio RD500/1 | 500W Class-D 2-Ohm Monoblock Amplifier

JL Audio RD500/1 Class-D Monoblock

1000W Peak (500W RMS) RD Series 2-Ohm Stable Class-D Monoblock Subwoofer Amplifier

1000W Peak (500W RMS) RD Series 2-Ohm Stable Class-D Monoblock Subwoofer Amplifier

• 250 Watts RMS x 1 @ 4 ohms
• 500 Watts RMS x 1 @ 2 ohms
• Total Peak Power: 1000 Watts
• Variable Bass Boost: 0 to +12 dB
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation
• 9.78"W x 6.96"D x 2.13"H

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BUNDLE AND SAVE (5 offers)

Purchase Select Amplifiers and Receive A Free $25 Sonic Gift Card! This offer cannot be combined with any other coupons or offers.

JL Audio RD500/1 Class-D Monoblock

100% off

Priced separately $384 99

Bundle Savings of $25 00

Total bundle price:

$359 99

Save 25% Off an SMD DD-1 Distortion Detector with the purchase of a Qualifying Amplifier. Simply Click the "Add Both to Cart" button below.

JL Audio RD500/1 Class-D Monoblock

25% off

Priced separately $549 94

Bundle Savings of $47 49

Total bundle price:

$502 45

Purchase a qualifying amplifier and save 20% on an NVX XKIT42 True Gauge OFC amplifier installation kit. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

JL Audio RD500/1 Class-D Monoblock

20% off

Priced separately $459 98

Bundle Savings of $20 00

Total bundle price:

$439 98

For a limited time - while supplies last - get an instant 5% off the JL Audio Remote Bass Knob Control used to adjust the level of your amplifier from the front of the vehicle. This offer cannot be combined with any other offers.

JL Audio RD500/1 Class-D Monoblock

10% off

Priced separately $414 98

Bundle Savings of $5 50

Total bundle price:

$409 48

Save 50% off the NVX XCAP1F 1.0 Farad Capacitor with the purchase of a select amplifier. Simply Click the "Add Both to Cart" button to the right. This offer cannot be combined with any other coupons or offers.

JL Audio RD500/1 Class-D Monoblock

50% off

Priced separately $449 98

Bundle Savings of $45 00

Total bundle price:

$404 98

JL Audio

Authorized dealer

JL Audio's RD Series Amplifiers
Class D Power for Days

JL Audio RD500/1 Monoblock Class D Amplifier

Lots of power, installer-friendly design and options for every audio enthusiast, all make it easy to choose a JL Audio RD Series amplifier.


The Monoblock RD500/1 has the do-it-yourself audiophile completely in mind. Capable of pushing out up to 500 watts of clean power at 2 ohms, this subwoofer amplfier handily powers all the low end you can stand. The RD Monoblocks have built-in 12 dB/octave low-pass filters, bass equalizer boosters and three turn-on modes: Traditional 12-volt trigger, signal sensing and DC offset. Top off the package with a sleek, single-cast piece of aluminum in black powdercoat and blue LEDs, and your power looks as clean as it sounds.

Designed For Installers


JL Audio’s engineers had professional and at-home installers in mind with the RD Series. All of the inputs and controls are on the same side of the chassis, simplifying the setup whether you’re in a shop or in your driveway. The output clipping indicators on each channel section mean you don’t need specialized tools to accurately set the gain. A remote level control input gives you the option to install a bass level knob, sold separately, in the front seat, giving you full control over the bass output for every song you play.

NexD™ Switching Technology

NexD™ Switching Technology

The RD Series also incorporates JL Audio’s NexD Switching Tehnology. Since Class D amplifiers have a tendency to produce distortion at some ranges, NexD Switching helps cancel it out before feedback is ever applied. All of this helps ensure the some of the cleanest possible signal to your subwoofer from your brand new Class D amplifier.

For an amp that delivers power, utility, simplicity and plenty of options, take a look at all of the JL Audio RD Series amps at Sonic Electronix. We’re sure you’ll end up with one in your cart.

General Features:

  • JL Audio RD500/1
  • Class-D 2-Ohm Stable Monoblock Amplifier
  • RMS Power Rating:
    • 4 ohms: 250 watts x 1 chan.
    • 3 ohms: 350 watts x 1 chan.
    • 2 ohm: 500 watts x 1 chan.
    • 1 ohm: ------------N/A------------
  • Total power output: 1000 watts
  • Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Wired remote bass level control available, sold separately: JL Audio RBC-1
  • Soft start turn-on
  • Ultra sleek and compact chassis
  • Mono channel operation
  • NexD™ Technology delivers huge power with low distortion
  • Equipped with an onboard LED-clipping indicator
  • Top mounted dual color LED strip
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Dual speaker terminals simplify the hookup of multiple speakers
  • Heavy duty aluminum alloy heat-sink for extreme heat dissipation
  • Frequency Response: 7 - 500 Hz
  • Total Harmonic Distortion (THD): <1%
  • Signal to Noise Ration: >80 dB
  • Variable low-pass filter: 50 - 500 Hz, 12 dB/octave
  • Variable Bass Boost: 0 to +12 dB
  • Fuse Rating: 50 A x 1
  • 4 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Dimensions: 9.78"W x 6.96"D x 2.13"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Check out the RD500/1 Owner's Manual

Product history:

JL Audio RD500/1 thumbnail
(newest, current model)
JL Audio JX500/1D thumbnail
(previous model, replaced by JL Audio RD500/1 Class-D Monoblock)
JL Audio JX500/1 thumbnail
(previous model, replaced by JL Audio JX500/1D)
Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
250 watts x 1 channels
RMS Power @ 2 ohms
500 watts x 1 channels
Power Specifications - Subwoofer Channel
Peak Power @ 4 ohm
500 watts x 1 channels
Peak Power @ 2 ohms
1000 watts x 1 channels
Amplifier Specifications
Amplifier Series
RD (JL Audio)
Marine Certified
Amplifier Class
Number of Channels
1 - Mono
Total Peak Power Output
1000 watts
Total RMS Power Output
500 watts
Maximum Input Gauge Size
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
Not Bridgeable
THD at Rated RMS Power
Speaker Level Inputs
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
50 - 500 Hz
Signal-to-Noise Ratio
>80 dB
Channel Separation
12 dB
Bass Boost
0 - 12 dB
Bass/Gain Remote
Optional (Accessory required and sold separately)
Fan Cooled
Fuse Rating
50A x 1 
Total Fuse Rating
CEA-2006 Compliant
Sonic Certified Amplifier
Not Tested
Amp Bluetooth Connectivity
Hi-Res Certified
Authorized Dealer
Authorized Dealer
Authorized Dealer
What is in the box?
WITB: Amplifiers
Allen wrench
User manual
Specials with this Item
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
  • JL Audio RD Series Car Amplifiers | Clipping LED Demonstration | CES 2017
  • How To Install an Amplifier: Car Amplifier Basics Part 2
JL Audio RD500/1 Class-D Monoblock

JL Audio RD500/1 Class-D Monoblock



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By feature average rating



April 5, 2019

one of the best amps ive owned

This is a tiny amp with a Big punch . Im very happy with this amp.


found this helpful.


July 29, 2018


Amazing amp, says 500 rms at 2ohms but this push 720 rms is a Monster apm!!!
I recommend this amp


found this helpful.


February 28, 2020

What’s not to love?

This little amplifier is absolutely amazing! It is very small and delivers a very solid amount of power. I have this driving a JL 12 W3V3, and it is very capable of driving it to its limit, all while remaining as cool as a cucumber. This thing, regardless of how hard you push it, never seems to even get warm. Add to the incredible performance the capability of setting the gain easily using the included clip indicator light, and you have an absolute joy to deal with. I highly recommend this amplifier. Oh, one last thing; the optional remote knob is an absolute must.


found this helpful.


January 22, 2019

Great Amp

Worth the money! Do yourself a favor and buy this amp!


found this helpful.


December 31, 2016

Great amp

Easy install and set-up! Works as advertised. Puts out the power.


found this helpful.


June 13, 2020

I’m satisfied

I got this RD500 pushing two Jl Audio w1’s stealth box and it’s doing the job! I recommend buying this amp.


April 10, 2020

Awesome Amp

I bought this amp to run with my Stealthbox in a c6 Corvette. Amp delivers big power for a small size. I highly recommend for a W3v3-2 or smaller.


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1000W Peak (500W RMS) RD Series 2-Ohm Stable Class-D Monoblock Subwoofer Amplifier


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