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JL Audio

JL Audio® 600 W 4 Channel Class D Full-Range Amplifier

Model #: HD600/4

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Additional parts or labor may be required to complete the installation depending on year make and model

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Professional Installation Required

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JL Audio® 4 Channel Class D Full-Range Amplifier with Single-Cycle Control switching and R.I.P.S. technology




4-Channel Class D Full-Range Amplifier, 150 W x 4 @ 1.5-4 O

This compact multi-channel powerhouse employs our Single-Cycle Control switching design and R.I.P.S. technology to deliver 150 W x 4 or 300 W x 2. Tight power supply regulation keeps distortion down and maximizes sound quality.

When using the HD750/1 or HD1200/1 to drive a subwoofer system, the HD600/4 is the ideal satellite amplifier, delivering huge dynamics with pristine resolution. From a pure sound quality perspective, we invite you to compare the real-world, in-car performance of this amplifier to any other amplifier on the market, of any type, at any price.

It can also be deployed on its own as a very capable 3-channel system amplifier with 150 W x 2 to the satellites and 300 W x 1 to a subwoofer system.

This amplifier features a brushed aluminum finish with black powder-coated cast alloy heat sinks and bottom panel. A black powder-coated, gasketed cover is also provided to protect the controls.

Frequency Response: 6 Hz – 30 kHz (+0, -1dB)

THD+N @ Rated Power: <0.03% @ 4 O per Ch.

Min.Copper Power / Ground Wire Gauge: 4 AWG wire

Useful Documents


General Specs

Depth (in.) 8.29
Width (in.) 10.74
Height (in.) 1.93
Preamp Outputs 1
Amplifier Class Class D
Amplifier Output (Watts) 600
Bluetooth Capable No
Amplifier Channels 4
Impedance 1.5 – 4.0 Ohms
Manufacturer Warranty 2 Year
RMS Power Handling (Watts) 300
Water Resistant No
Digital Input No
Shallow Mount No
Speaker Level Input No
Number Of Outputs 4
Number Of Inputs 2


Analog Audio(RCA) Input: 2

Additional information



Manufacturer warranty

Shallow mount

Rms power handling (watts)

Depth (in.)

Width (in.)

Height (in.)

Amplifier class

Amplifier output (watts)

Bluetooth capable

Amplifier channels

Water resistant

Digital input

Speaker level input

Number of outputs

Number of inputs

Analog audio(rca) input:

Peak power

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