JL Audio HD600/4 4 Ch. Class D Full-Range Amplifier, 600 W

When the HD amplifiers were introduced in 2008, they wowed the industry with their amazing technological content and impressive power density. Subsequent and continued success in the marketplace is testament to the excellence of their design. They remain unmatched in offering compact packaging, along with the flexibility and stability of our Regulated, Intelligent Power Supply (R.I.P.S.) technologies.

“Small” is not the only story here. Making a small amplifier is great, of course... but not if power and sound quality are sacrificed. Our engineering team focused on achieving world-class fidelity first, and then on making our HD amplifiers amazingly powerful, efficient and small. These efforts led to a remarkable switching amplifier technology called Single Cycle Control™, which allowed all of these goals to be achieved.

This exclusive core amplifier technology is mated to our regulated, intelligent power supply (R.I.P.S.), advanced thermal management systems and a full complement of studio-grade processing features. Behind every HD's removable security cover, you will find studio-grade signal processing with fully variable crossover filters. Also included are our noise-killing, highly flexible differential-balanced inputs with remote level control capabilities via the HD-RLC remote level control (optional).

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

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.

TECHNICAL DATA:

RMS Power @ 14.4V150W x 4 @ 4Ω. 150W x 4 @ 3Ω. 150W x 4 @ 2Ω. 150W x 4 @ 1.5Ω
300W x 2 @ 8Ω Bridged
300W x 2 @ 4Ω Bridged
Output Channels 4
Voltage 12V
Class D
Features Advanced Rollback Protection
Differential Balanced Inputs
R.I.P.S
Real Sink
Single Cycle Control
Fuse Rating 50A
Cable Gauge 4AWG
Amp Turn-On 12V
Frequency Response 6-30kHz
Signal-to-Noise Ratio 110dB
Filter High-Pass / Low-Pass
Controller N/A
Input Channels 2 / 4
Input Type High Level / Low Level
Input Sensitivity Low Level 200mV-2V
Input Sensitivity High Level 800mV-8V
Height 4.9cm
Width 27.3cm
Depth 21.1cm