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  1. Home
  2. JL Audio Store
  3. Discontinued JL Audio Car Audio & Electronics
  4. Discontinued JL Audio Car Amplifiers
  5. Discontinued JL Audio Monoblock Amplifiers

Discontinued JL Audio Monoblock Amplifiers

Experience deep, impactful bass with JL Audio's monoblock amplifiers.

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Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
Amplifier Key Features
Amplifiers can offer a diverse array of features. If you select more than one feature, then you will view amplifiers that have ALL features selected. These include speaker-level inputs that facilitate seamless integration with factory audio systems, Bluetooth connectivity suitable for ATV/UTV or Classic vehicle setups, built-in DSPs that provide enhanced control over your audio signal, and a host of other functionalities to explore.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Remote bass/level controller
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Sonic Certified Amplifier
Sonic Certified amplifiers have been tested by the experts at Sonic Electronix to meet or exceed the wattage ratings provided by the manufacturer. If this is marked as Yes, then you can trust the wattage ratings. If marked as No, then we have tested the amplifier and it did not meet the advertised wattage ratings. If marked as Not Tested, then the Sonic Electronix experts have not yet been able to test the amp.
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Amp Bluetooth Connectivity
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
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JL Audio JX500/1

500W RMS, 1-Channel Monoblock Class A/B JX Series Full-Range Car Amplifier

JX500/1 big DISCONTINUED
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JL Audio JX500/1

500W RMS, 1-Channel Monoblock Class A/B JX Series Full-Range Car Amplifier

JX Series Monoblock Amplifier • Class AB • 340W @ 4 ohm • 420W @ 3 ohm • 500W @ 2 ohm • Variable Bass Boost (0 to +12 dB) • High & Low Level Inputs • Adjustable Input Sensitivity • Low Pass Filter

3

JX Series Monoblock Amplifier • Class AB • 340W @ 4 ohm • 420W @ 3 ohm • 500W @ 2 ohm • Variable Bass Boost (0 to +12 dB) • High & Low Level Inputs • Adjustable Input Sensitivity • Low Pass Filter

JL Audio HX300/1

300W Class D Full-Range Ultra-Compact Monoblock Amplifier for Powersport Vehicles / SSVs / UTVs / Motorcycles / Muscle Cars / HotRods / Cars

HX300/1 big DISCONTINUED
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JL Audio HX300/1

300W Class D Full-Range Ultra-Compact Monoblock Amplifier for Powersport Vehicles / SSVs / UTVs / Motorcycles / Muscle Cars / HotRods / Cars

• 160w x 1 @ 4ohm , 220w x 1 @ 3ohm , 300w x 1 @ 2ohm
• NexD™ ultra-high-speed switching design
• Black powder-coated finish
• Gasketed cover for the controls
• Stainless steel hardware for durability
• Accepts RCA (low-level) & Speaker-level (high-level) signal
• Signal to Noise Ration: 85 dB

2

• 160w x 1 @ 4ohm , 220w x 1 @ 3ohm , 300w x 1 @ 2ohm
• NexD™ ultra-high-speed switching design
• Black powder-coated finish
• Gasketed cover for the controls
• Stainless steel hardware for durability
• Accepts RCA (low-level) & Speaker-level (high-level) signal
• Signal to Noise Ration: 85 dB

JL Audio XD1000/1v2

1000W XDv2 Series Monoblock Class D Subwoofer Amplifier with High-Speed NexD Switching

XD1000/1v2 big DISCONTINUED
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JL Audio XD1000/1v2

1000W XDv2 Series Monoblock Class D Subwoofer Amplifier with High-Speed NexD Switching

• NexD Switching Technology
• Dual-Range Differential Balanced Input Section
• Advanced Rollback Protection
• Selectable Low-Pass Filter Slope: 12 dB or 24 dB
• Detented, Calibrated Filter Freq. Potentiometer

2

• NexD Switching Technology
• Dual-Range Differential Balanced Input Section
• Advanced Rollback Protection
• Selectable Low-Pass Filter Slope: 12 dB or 24 dB
• Detented, Calibrated Filter Freq. Potentiometer

JL Audio JX500/1D-FACTORY REFURBISHED

500W RMS, Monoblock Class D JX Series Full-Range Car Amplifier

JX500/1D big DISCONTINUED
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JL Audio JX500/1D-FACTORY REFURBISHED

500W RMS, Monoblock Class D JX Series Full-Range Car Amplifier

• Peak: 235W x 1 @ 4 ohm, 300W x 1 @ 3 ohm, 410W x 1 @ 2 ohm
• Total RMS Power: 410W
• Class D Circuitry
• Bass Boost: 0-12 dB
• Variable Slope Low-Pass Filter
• Dimensions: 7-3/4"L x 7-3/4"W x 2-1/8"H

• Peak: 235W x 1 @ 4 ohm, 300W x 1 @ 3 ohm, 410W x 1 @ 2 ohm
• Total RMS Power: 410W
• Class D Circuitry
• Bass Boost: 0-12 dB
• Variable Slope Low-Pass Filter
• Dimensions: 7-3/4"L x 7-3/4"W x 2-1/8"H

JL Audio XD300/1-Open Box

300W Single-Channel Class D XD Series Subwoofer Monoblock Car Amplifier

XD300/1 big DISCONTINUED
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JL Audio XD300/1-Open Box

300W Single-Channel Class D XD Series Subwoofer Monoblock Car Amplifier

• 300W x 1-Chan @ 2 Ohm
• NexD Ultra-High Speed Topology
• Preamp RCA Outputs
• Variable High/Low-Pass Filter
• 3-Way System Protection Circuitry
• Remote Bass Input

• 300W x 1-Chan @ 2 Ohm
• NexD Ultra-High Speed Topology
• Preamp RCA Outputs
• Variable High/Low-Pass Filter
• 3-Way System Protection Circuitry
• Remote Bass Input

JL Audio HD1200/1 OPEN BOX

1200W RMS, Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

HD1200/1 big DISCONTINUED
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JL Audio HD1200/1 OPEN BOX

1200W RMS, Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle control - High Fidelity Class D
• 1 Pair of Buffered Preamps RCA Outputs
• Dimensions: 10.74"L x 7.85"W x 1.93"H

3

• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle control - High Fidelity Class D
• 1 Pair of Buffered Preamps RCA Outputs
• Dimensions: 10.74"L x 7.85"W x 1.93"H

JL Audio HD750/1 Open Box

Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

HD750/1 big DISCONTINUED
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JL Audio HD750/1 Open Box

Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

JL Audio HD Series Monoblock Class D, Small Profile Car Amplifier with R.I.P.S. Technology • 750 watts x 1 Chan. RMS • MOSFET power supply • Preamp RCA outputs • RCA level inputs • Single Cycle Control™

1

JL Audio HD Series Monoblock Class D, Small Profile Car Amplifier with R.I.P.S. Technology • 750 watts x 1 Chan. RMS • MOSFET power supply • Preamp RCA outputs • RCA level inputs • Single Cycle Control™

JL Audio Slash v2 500/1v2 Open Box

(Open Box) 500W RMS, Slash Version 2 Series Class D Monoblock Amplifier

500/1v2 big DISCONTINUED
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JL Audio Slash v2 500/1v2 Open Box

(Open Box) 500W RMS, Slash Version 2 Series Class D Monoblock Amplifier

Slash v2 Series Class D Monoblock Car Amplifier • 500W x 1 chan. @ 4 ohm • MOSFET power supply • Differential-balanced with RCA jack inputs • Preamp RCA outputs

Slash v2 Series Class D Monoblock Car Amplifier • 500W x 1 chan. @ 4 ohm • MOSFET power supply • Differential-balanced with RCA jack inputs • Preamp RCA outputs

JL Audio Slash 600/1v3- FACTORY REFURBISHED

600W RMS Slash Version 3 Series Class D Monoblock Amplifier

600/1v3 big DISCONTINUED
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JL Audio Slash 600/1v3- FACTORY REFURBISHED

600W RMS Slash Version 3 Series Class D Monoblock Amplifier

• Peak: 600W x 1 @ 4 ohm, 600W x 1 @ 3 ohm, 600W x 1 @ 2, 600W x 1 @ 1.5 ohm
• Total RMS Power: 600W
• R.I.P.S. Power Supply
• Parametric Bass EQ
• Fully Variable Infrasonic Filter
• Dimensions: 13-7/16"L x 9-1/4"W x 2-3/8"H

• Peak: 600W x 1 @ 4 ohm, 600W x 1 @ 3 ohm, 600W x 1 @ 2, 600W x 1 @ 1.5 ohm
• Total RMS Power: 600W
• R.I.P.S. Power Supply
• Parametric Bass EQ
• Fully Variable Infrasonic Filter
• Dimensions: 13-7/16"L x 9-1/4"W x 2-3/8"H

JL Audio Slash 600/1v3 LIKE NEW DAMAGED PACKAGING

600W RMS Monoblock Slash v3 Series Class D Car Amplifier

600/1v3 big DISCONTINUED
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JL Audio Slash 600/1v3 LIKE NEW DAMAGED PACKAGING

600W RMS Monoblock Slash v3 Series Class D Car Amplifier

Like new Damaged Package
• Peak: 600W x 1 @ 4 ohm, 600W x 1 @ 3 ohm, 600W x 1 @ 2, 600W x 1 @ 1.5 ohm
• Total RMS Power: 600W
• R.I.P.S. Power Supply
• Parametric Bass EQ
• Fully Variable Infrasonic Filter
• Dimensions: 13.40"L x 9.25"W x 2.36"H

Like new Damaged Package
• Peak: 600W x 1 @ 4 ohm, 600W x 1 @ 3 ohm, 600W x 1 @ 2, 600W x 1 @ 1.5 ohm
• Total RMS Power: 600W
• R.I.P.S. Power Supply
• Parametric Bass EQ
• Fully Variable Infrasonic Filter
• Dimensions: 13.40"L x 9.25"W x 2.36"H

JL Audio Slash 1200/1v3 OPEN BOX COMPLETE

1200W RMS Monoblock Slash Series Class D Car Amplifier

1200/1v3 big DISCONTINUED
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JL Audio Slash 1200/1v3 OPEN BOX COMPLETE

1200W RMS Monoblock Slash Series Class D Car Amplifier

Opened and Used
• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1200W x 1 @ 1.5 ohm
• Total RMS Power: 1200W
• R.I.P.S. (Regulated, Intelligent Power Supply)
• Parametric Bass Boost EQ
• Fully Variable Infrasonic Filter
• Dimensions: 19-3/4"L x 9-1/4"W x 2-3/8"H

Opened and Used
• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1200W x 1 @ 1.5 ohm
• Total RMS Power: 1200W
• R.I.P.S. (Regulated, Intelligent Power Supply)
• Parametric Bass Boost EQ
• Fully Variable Infrasonic Filter
• Dimensions: 19-3/4"L x 9-1/4"W x 2-3/8"H

JL Audio J2 250.1 (J2250.1) Open Box

(Open Box) 250W, Single-Channel Class A/B J2 Series Monoblock Car Amplifier

J2-250.1 big DISCONTINUED
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JL Audio J2 250.1 (J2250.1) Open Box

(Open Box) 250W, Single-Channel Class A/B J2 Series Monoblock Car Amplifier

J2 Series Monoblock Class A/B Car Amplifier • 250W RMS • Dual N-Channel MOSFET Output Stage • Speaker-Level Inputs • Preamp RCA Outputs • Dual Speaker Terminals • Variable Low-Pass Filter • Remote Bass Level Control

J2 Series Monoblock Class A/B Car Amplifier • 250W RMS • Dual N-Channel MOSFET Output Stage • Speaker-Level Inputs • Preamp RCA Outputs • Dual Speaker Terminals • Variable Low-Pass Filter • Remote Bass Level Control

JL Audio HD750/1 OPEN BOX COMPLETE

Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

HD750/1 big DISCONTINUED
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JL Audio HD750/1 OPEN BOX COMPLETE

Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

Item has been previously installed and used
• RMS: 750W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 750W x 1 @ 1 ohm
• Total RMS Power: 750W
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle control - High Fidelity Class D
• 1 Pair of Buffered Preamps RCA Outputs
• Dimensions: 10-13/16"L x 8-1/4"W x 1-15/16"H

Item has been previously installed and used
• RMS: 750W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 750W x 1 @ 1 ohm
• Total RMS Power: 750W
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle control - High Fidelity Class D
• 1 Pair of Buffered Preamps RCA Outputs
• Dimensions: 10-13/16"L x 8-1/4"W x 1-15/16"H

JL Audio HD1200/1 OPEN BOX COMPLETE

1200W RMS, Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

HD1200/1 big DISCONTINUED
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JL Audio HD1200/1 OPEN BOX COMPLETE

1200W RMS, Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

Used and has been previously installed
• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle control - High Fidelity Class D
• 1 Pair of Buffered Preamps RCA Outputs
• Dimensions: 10-13/16"L x 8-1/4"W x 1-15/16"H

Used and has been previously installed
• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle control - High Fidelity Class D
• 1 Pair of Buffered Preamps RCA Outputs
• Dimensions: 10-13/16"L x 8-1/4"W x 1-15/16"H

JL Audio RD1000/1 (Open Box, Great)

1000W RMS Class D RD Series Monoblock Car Amplifier

RD1000/1 big DISCONTINUED
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JL Audio RD1000/1 (Open Box, Great)

1000W RMS Class D RD Series Monoblock Car Amplifier

• 600 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 3 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

• 600 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 3 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

JL Audio RD1500/1 (Open Box, Great)

1500W RMS Class D RD Series Monoblock Car Amplifier

RD1500/1 big DISCONTINUED
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JL Audio RD1500/1 (Open Box, Great)

1500W RMS Class D RD Series Monoblock Car Amplifier

• 750 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 3 ohm
• 1500 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

• 750 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 3 ohm
• 1500 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

JL Audio HD750/1 (Open Box, Great)

750W RMS Class D HD Series Monoblock Car Amplifier

HD750/1 big DISCONTINUED
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JL Audio HD750/1 (Open Box, Great)

750W RMS Class D HD Series Monoblock Car Amplifier

• 750 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 1.5 ohm Stable Monoblock Amplifier

• 750 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 1.5 ohm Stable Monoblock Amplifier

JL Audio VX600/1i (Open Box, Great)

600W RMS Class D VXi Series Monoblock Car Amplifier

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JL Audio VX600/1i (Open Box, Great)

600W RMS Class D VXi Series Monoblock Car Amplifier

• 400 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 3 ohm
• 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier

• 400 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 3 ohm
• 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier

JL Audio JD1000/1 (Open Box, Good)

1000W RMS Class D JD Series Monoblock Car Amplifier

JD1000/1 big DISCONTINUED
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JL Audio JD1000/1 (Open Box, Good)

1000W RMS Class D JD Series Monoblock Car Amplifier

• 600 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

• 600 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

JL Audio MHD750/1 R/B

Factory Refurbished 750W RMS, Marine MHD Series Monoblock Amplifier

MHD750/1 big DISCONTINUED
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JL Audio MHD750/1 R/B

Factory Refurbished 750W RMS, Marine MHD Series Monoblock Amplifier

JL Audio MHD Series Monoblock Class D Marine Amplifier • 750W RMS at 1.5-4 ohm • PWM MOSFET Power Supply • Single Cycle Control Technology • R.I.P.S Power Technology • Rollback Protection Circuitry • Marine Certified • Studio-Grade Signal Processing

JL Audio MHD Series Monoblock Class D Marine Amplifier • 750W RMS at 1.5-4 ohm • PWM MOSFET Power Supply • Single Cycle Control Technology • R.I.P.S Power Technology • Rollback Protection Circuitry • Marine Certified • Studio-Grade Signal Processing

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    JL Audio Monoblock Amplifiers Information

    The JL Audio monoblock amplifiers are designed for efficient power output. These amps take up little space and feature high quality platinum finished connections, and solid power ratings. You won't be disappointed with your JL Audio monoblock amplifier for your vehicle's needs.
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