JL Audio HD750/1 | 750W Small Profile Monoblock Amplifier

JL Audio HD750/1

750W RMS, Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

750W RMS, Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

• RMS: 750W x 1 @ 4 ohms, 750W x 1 @ 2 ohms, 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: 10.74"L x 7.85"W x 1.93"H

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List price $929.99
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JL Audio HD Monoblock Class D Wide-Range Amplifier

JL Audio's Flagship Series of amplifiers offer unmatched performance from an ultra-compact chassis. These Class D amplifiers require less power, generate minimal heat and take up far less space than the common amplifier design. HD Series amplifiers reproduce your music with outstanding accuracy, providing high-fidelity sound even under the most demanding conditions, thanks to a number of JL Audio exclusive technologies. Single Cycle Control (U.S. Patent #6,084,450), R.I.P.S System and Advanced Rollback Protection are just a few of the technologies that sets the HD Series apart from the rest of the market, all designed to deliver top-flight audio performance. In addition, behind every HD's removable security cover, you will find studio-grade signal processing with fully variable crossover filters to properly tune in your setup and put all the technology under the hood to good use.

Also included are JL Audio's noise-killing, highly flexible differential-balanced inputs with remote level control capabilities via the HD-RLC remote level control (sold separately).

Advanced Rollback Protection

JL Audio's signature Advanced Thermal Rollback protection system eliminates annoying thermal shutdown events to keep the music playing, even under the most demanding conditions. Should the amplifier reach an unsafe operating temperature, a special circuit rolls back peak power output, without changing gain, until the amplifier cools down to a safe operating temperature. The red "Thermal" LED will light to indicate this condition has been reached. Once the amplifier cools down, the circuit restores full peak power output and the red "Thermal" indicator reverts to its normal state. The operation of Advanced Rollback Protection is inaudible in most cases.

R.I.P.S. System

The HD750/1 employs JL Audio's exclusive Regulated, Intelligent Power Supply (R.I.P.S.) design. This sophisticated power supply allows the amplifier to produce its optimum power (750watts x 1) over a wide range of speaker impedances. Unlike conventional amplifiers that require a specific impedance to produce optimum power, the R.I.P.S.-equipped HD750/1 gives you the freedom to use a variety of subwoofer configurations without sacrificing power output or sound quality. The operation of the R.I.P.S. circuitry is entirely automatic and adjusts itself every time the amplifier is turned on according to the lowest impedance present at the speaker load.

HD750/1 Features:



  • JL Audio HD Series Monoblock Class D Amplifier
  • *RMS Power Rating (11V-14.5V):
    • 4 ohms: 750 watts x 1 chan.
    • 3 ohms: 750 watts x 1 chan.
    • 2 ohms: 750 watts x 1 chan.
    • 1.5 ohms: 750 watts x 1 chan.
  • Class D, switching type with patented Single-Cycle Control technology
  • Pulse width modulation-regulated switching power supply
  • LED power (green), protect (red) and low impedance (amber) indicators
  • Removable Power/Ground and Speaker connectors
  • Brushed aluminum finish chassis
  • Compact, stackable chassis design
  • Black powder-coated, gasketed cover
  • RealSink: Vertical, cast alloy fins effectively dissipate heat
  • Advanced Thermal Rollback protection system
  • R.I.P.S. - Regulated, Intelligent Power Supply
  • Single Cycle Control - high-fidelity, full-range class D
    • Compares the real PWM waveform and then corrects it in each and every cycle
      (over 400,000 times per second)
    • 80% efficiency at 1/2 rated power for the whole amplifier, including its power supply
    • 60% less current draw than a typical Class A/B car amplifier of equal power
    • Less generated heat, smaller chassis than a similarly powerful Class A/B design.
  • Noise-killing, highly flexible differential-balanced inputs
  • 1 Pair of Buffered preamp RCA outputs for daisy chaining the audio signal
  • Speaker level inputs via RCA (JL Audio XD-CLRAIC2-SW required and sold separately
  • Remote bass level input (JL Audio HD-RLC required and sold separately)
  • Optional stacking equipment for HD amplifiers: JL Audio HD Stack Kit
  • Selectable input voltage/sensitivity:
    • Low level: 200mV - 2V
    • High level: 800mV - 8V
  • Selectable output polarity, "Phase": 0/180°
  • Selectable State-variable slope: 12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley
  • Selectable infrasonic filter, "Subsonic": Defeatable or 30 Hz
  • Selectable filter modes: Low-Pass or High-Pass, Defeatable
  • Cutoff Freq. Range: Continuously variable: 50 - 500 Hz
  • Total Harmonic Distortion: <0.03% @ 4Ω (Average at 1kHz)
  • Signal to Noise Ration:
    • Referred to Rated Power: 111 dBA
    • Referred to 1 Watt: 82.2 dBA
  • Frequency response: 6 - 8,000 Hz (+0, -1 dB)
  • Damping Factor: >500 @ 4Ω/50 Hz, >250 @ 2Ω/50 Hz
  • Recommended fuse rating: 60A x 1 (inline, not included)
  • Dimensions: 10.74"L x 7.85"W x 1.93"H
  • **4 gauge OFC power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty

Check out the JL Audio HD750/1 Owner's Manual

Notes from JL Audio:
  • *If you connect a load higher than 4Ω nominal, power will drop by half with every doubling of impedance above 4Ω stereo. If you connect a load lower than 1.5Ω nominal, the amplifier protection circuitry activates a "safe" mode which reduces amplifier power to protect the circuitry from failure (the LED status indicator on the control panel will light up amber to indicate that this has happened). See page 14 for details.
  • **We do not recommend the use of "copperclad aluminum wire" or "CCA" wire because this wire is significantly less conductive than pure copper wire. Only use pure copper power wire, such as JL Audio's Premium Power Wire. Tinned copper wire (silver color) is acceptable as the tin-plating is only a very minor component of the wire.
  • **The HD750/1's "+12 VDC" and "Ground" connections are designed to accept 4 AWG power wire. 2 AWG or 1/0 AWG pure copper wire is recommended for any power wire run longer than 72 inches (180 cm). This larger wire should be reduced to 4 AWG using a distribution block within 36 wire inches (90 cm) of the amplifier's "+12 VDC" connector. For runs shorter than 72 inches, 4 AWG pure copper power wire is acceptable

This item is currently not eligible for our low price guarantee. This may be due to supply constraints, manufacturer restrictions, or another reason. We're always here to help you get the best price possible so give us a call or email today. Our experts will do their best to build the system that works for you within the rules.

Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
750 watts x 1 channels
RMS Power @ 2 ohms
750 watts x 1 channels
RMS Power @ 1 ohm
750 watts x 1 channel at 1.5 ohms
Amplifier Specifications
Amplifier Series
HD (JL Audio)
Marine Certified
Amplifier Class
Number of Channels
1 - Mono
Total Peak Power Output
750 watts
Total RMS Power Output
750 watts
Maximum Input Gauge Size
Minimum Impedance Unbridged
1.5 ohms
Minimum Impedance Bridged
Not Bridgeable
THD at Rated RMS Power
Speaker Level Inputs
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
50 - 500 Hz
Low-Pass Crossover Frequency
50 - 500 Hz
Subsonic Filter
30 Hz
Signal-to-Noise Ratio
111 dB
Bass/Gain Remote
Optional (Accessory required and sold separately)
Fan Cooled
Fuse Rating
60A X 1 In-Line Fuse Recommended
Total Fuse Rating
CEA-2006 Compliant
Sonic Certified Amplifier
Not Tested
Amp Bluetooth Connectivity
Hi-Res Certified
Authorized Dealer
Authorized Dealer
Authorized Dealer
What is in the box?
WITB: Amplifiers
Mounting screws (4)
Allen wrenches (2)
User manual
Specials with this Item
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
  • JL Audio HX300/1 & MHX300/1 Car and Marine Amplifiers | Product Overview
  • How To Install an Amplifier: Car Amplifier Basics Part 2
JL Audio HD750/1

JL Audio HD750/1



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April 11, 2014

Pretty freakin awesome!

Bought this along with the JL Audio 12w7ae and had a custom enclosure built. This was installed in a 2012 Scion tC. Very clean sound and it hits super hard! Best setup I've ever owned. Sonic Electronics was super fast getting the sub and amp to me and at a much better price than anyone else! Highly recommend this setup. Even if you don't get JL, I would still recommend buying from Sonic!


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July 2, 2009

JL HD750/1 mono amp

I have this amp connected to a JL 12w7 prowedge sealed box. it hits pretty good. I wish I would have saved a couple hundred more and baught the 1000/1v2. bottom line is this: if you have limited space and want a great amp then this is the way to go. If you have the room and want one of the best amps made, then buy the JL 1000/1v2 amp. it's an old school analog amp built to give real power. The HD series are digital and dont seem to have the umpff like the 1000/1v2 slash series. It matters what kind of sub you have too. I'm upgrading to a ported 12w7 HO box and the 1000/1v2 amp just cause i know it will sound better. Overall i'm happy, but you know how it is.


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May 31, 2011


I'm pushing a 12W6 with my 750/1 and I couldn't be happier. I should've purchased JL products a long time ago.


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December 1, 2011

Awesome Amp

This amp sounds so much cleaner than other avg quality amps. Very small, barely gets warm. I have it powering 2 JL 12w3 subs in a Sonic brand sealed box. Sounds very nice and clean. Great experience with Sonic on all purchases. Quick shipping, awesome customer service when needed. Keep up the great work Sonic!


found this helpful.


July 1, 2018

JL Audio HD750/1

I recommed this product i hook it two 12tw3d4 shallow at 4 ohms at 1/4 of level imput and sounds amazing shipping was fast also thanks sonic electronix


found this helpful.


November 1, 2015

Expensive, but great performance.

Over all great product not sure if it's worth the price tag, but the performance is excellent and I guess that's hard to put a price on.


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This product is temporarily out of stock. May we recommend...

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This item is frequently compared to these items

JL Audio HD600/4

• 150 watts x 4-Chan. @ 1.5-4 ohms
• 300 watts x 2 chan. @ 3-8 ohms
• 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 XD-CLRAIC2-SW Speaker Wire to RCA Cable

2-Channel Speaker Wire to RCA Adaptor for High-Level Signal Connection to Amplifiers • Left and Right Channel Male RCA Plugs to Parallel Speaker Cable • Satin Black Jacket



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750W RMS, Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology


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