Included in this kit

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This bundle includes a JL Audio HD-RLC:Amplifier Remote Level Control and Cable, a JL Audio HD600/4:4 Ch. Class D Full-Range Amplifier 600 W, a JL Audio XD-PCS4-1B:Premium 4 AWG 12 V Power Connection Kit Single Amplifier, and 2x JL Audio XE-BLKAIC2-18 2-Channel Twisted-Pair RCA Audio Interconnect w/ Machined Connectors - 18 ft. / 5.49 m.

1x JL Audio HD-RLC:Amplifier Remote Level Control and Cable - (HD-RLC)

JL Audio HD-RLC: Amplifier Remote Level Control and Cable

Remote Level Control for Select JL Audio Amplifiers

The HD-RLC remotely controls the Bass Level of the following JL Audio amplifiers:

HD-Series: All models

XD-Series: All models

MHD-Series: All models

M-Series: All models

When the HD-RLC is connected to the above amplifiers, it acts as an attenuator on the input gain of the amplifier and is used to adjust the overall level of the amplifier from the front of the vehicle.

The HD-RLC kit includes the rotary control with a black ABS knob, mounting hardware and one 18 ft. (5.5 m) cable.

A satin-finish aluminum knob can be purchased separately.

1x JL Audio HD600/4:4 Ch. Class D Full-Range Amplifier 600 W - (HD600/4)

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

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.

1x JL Audio XD-PCS4-1B:Premium 4 AWG 12 V Power Connection Kit Single Amplifier - (XD-PCS4-1B)

JL Audio XD-PCS4-1B: Premium 4 AWG 12 V Power Connection Kit Single Amplifier

Premium 4 AWG 12V Power Connection System for One Amplifier

Everything you need to make secure, high-integrity power connections to a single amplifier with up to a 100A fuse rating. Our compact Maxi® Master Fuse Block is easy to install and allows you to accurately fuse your amplifier. A beefy self-tapping ground screw is also included to help you achieve a solid ground. As with all our Premium kits, the power wire is true AWG-spec, pure OFC copper.

What's in the kit?



XD-MFBW-MAXI Fuse Holder with Genuine 80A Maxi® Fuse

19 ft. (5.8 m) Blue 4 AWG Premium Power Wire, terminated with ring

3 ft. (0.9 m) Clear 4 AWG Premium Ground Wire, terminated with ring

20 ft. (6.1 m) Blue Remote Turn-On Lead Wire

Self-Tapping Ground Screw

Rubber Firewall Grommet

Nylon Wire Ties

Hex Wrench for Fuse Holder



Bonus: Additional 1-year warranty on JL Audio amplifier when installed by authorized dealer with this Power Connection System!

This kit is appropriate for single amplifiers with fuse ratings from 40A to 100A. Depending on the specific fuse rating of your amplifier, you may need to purchase an appropriate Maxi® fuse separately.

2x JL Audio XE-BLKAIC2-18 2-Channel Twisted-Pair RCA Audio Interconnect w/ Machined Connectors - 18 ft. / 5.49 m - (XE-BLKAIC2-18)

JL Audio XE-BLKAIC2-18 2-Channel Twisted-Pair Audio Interconnect w/ Machined Connectors - 18 ft. / 5.49 m

ECS premium audio interconnect cables begin with small diameter silver-plated OFC copper conductors with Teflon® dielectrics constructed in a tight twisted-pair arrangement for optimum noise rejection. An overmolded strain-relief secures the silver-soldered connections inside the machined brass connector ends and splitters for maximum durability.

The RCA plug barrels are short by design to facilitate installation in tight spaces while an extremely supple cable, protected by braided black outer jacket, provides a sleek look in any installation.

• Twisted-Pair Construction to Reject Noise
• Silver-Plated, pure OFC Copper Conductors with Teflon® Dielectrics
• Silver-Soldered Connections with overmolded strain-relief
• Machined Brass Connector Bodies and Cable-Splitter with Marine-rated corrosion-resistant plating
• Braided black outer jacket for protection from abrasion
• Compact connector design for installation in tight spaces