Small amps, big power
JL Audio's HD Series amplifiers offer high performance from an ultra-compact chassis. These Class D amplifiers use less power, take up less space, and generate less heat than traditional amp designs — you can even stack them up to create a sweet-looking installation.
JL Audio technology goes to work for you
HD Series amplifiers reproduce your music with exceptional accuracy, so you'll hear high-fidelity sound even under the most demanding conditions. JL Audio uses Single Cycle Control™ technology to eliminate the excessive signal distortion that's plagued Class D amplifiers in the past. Differential-balanced inputs eliminate noise before it hits the preamp stage, and allow you to connect the amp to just about any in-dash stereo. You'll hear clear, true, studio-quality audio, exactly what you expect from JL Audio.
4 channels of reliable power
The 4-channel HD600/4 amplifier pushes 150 watts RMS per channel to your speakers or subs, from a 2" tall chassis that's about the size of a sheet of computer paper. The regulated power supply allows this amp to deliver its rated power to a wide range of impedances, even when voltage levels drop during heavy use. Removable power and speaker plugs make it easy to pop this amp out if you need the space in your cargo area.
Some extra touches
You can use JL Audio's optional stack kit to mount one HD Series amp on top of another, so you can maximum power from minimum space. JL's wired remote allows you to control your HD amp's volume from your front seat.
Details:
- 4-channel subwoofer amplifer
- 150 watts RMS x 4 (1.5 - 4 ohms per channel)
- 300 watts RMS x 2 bridged (3 - 8 ohms per channel)
- variable high- and low-pass filter (50-500 Hz 12 or 24dB/octave)
- subsonic filter and output polarity control
- removable power and speaker plugs
- optional wired remote for level control
- Class D amplifier design
- MOSFET power and output stages
- differential-balanced inputs eliminate noise from your vehicle's electrical system
- speaker- and preamp-level inputs (speaker-level input requires an optional adapter)
- preamp outputs
- 4-gauge power and ground leads and a 50-amp fuse recommended — wiring and hardware not included with amplifier
- no onboard fuses — when installing multiple amps in a system, an additional 50-amp in-line fuse between the distribution block and the amplifier is recommended
- 10-13/16"W x 2"H x 8-7/8"D
- warranty: 1 year
- Want more peace of mind? Extended Service Plans Available
Accessories
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Wiring Kits
An amp kit will make your installation simpler and less expensive. Wiring not included with the amp.
RCA Patch Cords
The suggested wiring kit includes only one stereo patch cord, and you may need two for a 4-channel amp.
Fuses
The amplifier does not have a fuse. You'll need a 50-amp fuse on the power line.
Speaker Wire
Bring the music from your amp to your speakers.
Stacking Kits
Conserve space by stacking your JL-Audio HD series amps.
Firewall Bushings
If you drill a hole in your vehicle's firewall for your power cable, guard against corrosion, get a watertight seal, and protect your wiring from chafing against the cut-out.
Remotes
Add a remote and control your amp from the driver's seat.
Test Discs
Tune your system like a pro with Test CDs.
