We are a JL Audio authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!
Experience ultimate flexibility with powerful output options of 150 watts per channel at 1.5-4 Ω or 300 watts for two channels, all enhanced by advanced Single-Cycle Control switching design that delivers precise power management for superior sound clarity. Coupled with R.I.P.S. technology, this amplifier maintains tight power supply regulation to minimize distortion, ensuring optimal performance and delivering an audio experience that is rich, dynamic, and immersive for all your listening needs.
It comes with variable high and low-pass and subsonic filter controls for signal processing features and can be changed from a 2-channel input mode to a 4-channel input mode. It also has differential-balanced inputs to reduce the noise induced by audio cables and your car's electrical system.
The HD600/4 can handle a power output of 150 Watts RMS per channel at 4 ohms and 300 Watts RMS per channel if bridged. With a frequency response of 6 Hz up to 30 kHz, the amplifier really has extensive frequency range capability that is perfect for full-range audio systems.
| Ultimate JL Audio 4-Channel Amplifier Performance Battle | ||||
|---|---|---|---|---|
 JL Audio HD600/4 HD Series 600W 4-Channel Class-D Car Amplifier PREMIUM POWER
|
 JL Audio VX600/6i VXi Series 600W 6-Channel Class-D Amplifier with DSP DSP POWER
|
 JL Audio RD400/4 RD Series 400W 4-Channel Class-D Car Amplifier BEST BALANCE
|
 JL Audio JD400/4 JD Series 400W 4-Channel Class-D Car Amplifier VALUE PICK
|
 JL Audio XDM400/4 XDM Series 400W 4-Channel Class-D Marine Amplifier MARINE READY
|
Delivers 150W RMS x 4 at 4 ohms for powerful, clean output to drive your front and rear speakers with authority.
JL Audio's advanced Class-D design actively corrects switching distortion for smooth, accurate, reference-quality sound.
Maintains consistent output across changing vehicle voltage and speaker impedance conditions for dependable performance.
Reproduces a broad range of frequencies with excellent accuracy, making the HD600/4 ideal for full-range speaker systems.
Bridge the amplifier's channels to produce up to 300W RMS x 2 at 4 ohms for higher-powered speakers or custom system configurations.
Configure high-pass, low-pass, or full-range operation with adjustable crossover frequencies and selectable filter slopes.
Advanced heat management helps the amplifier stay cool and reliable during demanding listening sessions and high-output use.
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True High-Fidelity 4-Channel Power: Class D full-range amplifier delivering 150W RMS x 4 from 1.5–4Ω at 20Hz–20kHz with ultra-low 0.03% THD and an impressive 110 dB signal-to-noise ratio
Got this one in my 2007 Tahoe paired with the JL C-5 components tuned at 80 hz and they absolutely SCREAM!!! Can't wait to add the JL 12w7 HO and the JL HD750/1. Orion, MTX, Kicker, etc are all great. I've had and heard them all, but I personally prefer JL Audio, and this time I had the money to make it happen!!
Well I upgraded from a alpine mrp f600 which i only had for two months. I decided to upgrade after i herd my friends jl audio 450/4. An I was amazed. So i tried to look for something a little better , and i came across this. It's a nice amp . I herd things i never herd from the alpine, or the 450. BUT it doesnt have the deep bass out of it like my other amps hadneless its a great amp if you are willing to dish out the dough
I must say this amp sounds great i have it off 6 1/2 polk sr in front and in the back. i switched from a 300/4 v/2 amp. i must say what a difference the music is a lot more clear and the power you can run to your speakers is crazy. you really get cleaner power with this amp. if you are on the fence about this amp dont be its worth every penny in my book and been into car audio 11 years now.
I had a JL Slash 300/4 V2 running my mids and highs. I've directly swapped the Slash for this HD600/4 and Oooohhh it sounds so good! I believe the damping factor with the HD line adds to speaker control which refines the sound quality. Even though this amp is 150w per channel and the slash 300/4 is only 75, the difference in loudness is not overpowering but noticable. You'd think that more watts going to a 75w speaker would make it distort more but it doesn't. It provides a clean controled sound at upper volume levels. The sound quality is amazing....WOW! To top it off, this amp runs cooler and draws less from the battery. I'm running a 40A master fuse at the battery with this 600/4 and a Slash 500/1V2 and have not blown a fuse yet. Class D all the way!
Love jl, this amp is powering 2 pair of the focal K2 power components and sounds great. Jl may b a lil more but worth every penny
The JL HD 600/4 is a small yet powerful amp. The JL HD 600/4 shows off its versatility by connecting to all available interior speakers, and also allowing for the power output to and from the front to the rear. JL is a great brand that exemplifies durability and a powerful performance!
Best of the Best!
working the way it was built every since I bought it( since forever) doesn't require much maintenance to keep clean
I'm loving the sound of this thing! Yeah, it's a bit pricey, but let me tell ya, worth every penny. Excellent sound quality too and no noise. power efficiency rating is off the charts. Outstanding performance overall.
I've had three JL AUdio amps in my lifetime and I can say that this might be the best. Yes, its expensive, but if you are looking for that audiophlie level sound, this amp is so much worth it. Louder, so much cleaner sound, and setting it up in my Tacoma was easy, thanks to its size.
We are a JL Audio authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!
Experience ultimate flexibility with powerful output options of 150 watts per channel at 1.5-4 Ω or 300 watts for two channels, all enhanced by advanced Single-Cycle Control switching design that delivers precise power management for superior sound clarity. Coupled with R.I.P.S. technology, this amplifier maintains tight power supply regulation to minimize distortion, ensuring optimal performance and delivering an audio experience that is rich, dynamic, and immersive for all your listening needs.
It comes with variable high and low-pass and subsonic filter controls for signal processing features and can be changed from a 2-channel input mode to a 4-channel input mode. It also has differential-balanced inputs to reduce the noise induced by audio cables and your car's electrical system.
The HD600/4 can handle a power output of 150 Watts RMS per channel at 4 ohms and 300 Watts RMS per channel if bridged. With a frequency response of 6 Hz up to 30 kHz, the amplifier really has extensive frequency range capability that is perfect for full-range audio systems.
| Ultimate JL Audio 4-Channel Amplifier Performance Battle | ||||
|---|---|---|---|---|
| JL Audio HD600/4 HD Series 600W 4-Channel Class-D Car Amplifier PREMIUM POWER
|
JL Audio VX600/6i VXi Series 600W 6-Channel Class-D Amplifier with DSP DSP POWER
|
JL Audio RD400/4 RD Series 400W 4-Channel Class-D Car Amplifier BEST BALANCE
|
JL Audio JD400/4 JD Series 400W 4-Channel Class-D Car Amplifier VALUE PICK
|
JL Audio XDM400/4 XDM Series 400W 4-Channel Class-D Marine Amplifier MARINE READY
|
Delivers 150W RMS x 4 at 4 ohms for powerful, clean output to drive your front and rear speakers with authority.
JL Audio's advanced Class-D design actively corrects switching distortion for smooth, accurate, reference-quality sound.
Maintains consistent output across changing vehicle voltage and speaker impedance conditions for dependable performance.
Reproduces a broad range of frequencies with excellent accuracy, making the HD600/4 ideal for full-range speaker systems.
Bridge the amplifier's channels to produce up to 300W RMS x 2 at 4 ohms for higher-powered speakers or custom system configurations.
Configure high-pass, low-pass, or full-range operation with adjustable crossover frequencies and selectable filter slopes.
Advanced heat management helps the amplifier stay cool and reliable during demanding listening sessions and high-output use.
← Swipe left or right to browse videos →
