1200 Watt Max Monoblock GTO Series Class D Car Amplifier

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• RMS: 500W x 1 @ 4 ohms, 750W x 1 @ 2 ohms
• Total RMS Power: 750W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +12 dB
• Class D Circuitry
• Dimensions: 9-11/16"W x 12"L x 2-5/8"H

Learn more about the gto751ez

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This item has been discontinued

Product Highlights

• RMS: 500W x 1 @ 4 ohms, 750W x 1 @ 2 ohms
• Total RMS Power: 750W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +12 dB
• Class D Circuitry
• Dimensions: 9-11/16"W x 12"L x 2-5/8"H



Authorized dealer

Small and Powerful

The newest JBL GTO EZ Series car audio amplifiers provide unmatched ease of installation, configuration and calibration for clean, powerful sound. Connect to OEM or aftermarket systems without complicated adapters or setup routines. Use line-level (RCA) signals or speaker-level signals with RCA-to-bare-wire adapters. Experience the clean and powerful output of GTO amplifiers in a variety of channel configurations and power ratings, all of which are CEA-2006A compliant and backed by the JBL reputation for top quality.

The GTO Series Class D Subwoofer Monoblock Amps and the subwoofer channels in system amplifiers feature a 40Hz to 280Hz low-pass crossover that lets you get the best blend between your system's subwoofer and the rest of its speakers.

The Sound of quality

Sonic Electronix, one of the leaders in car audio, recently visited Harman, the premium global audio and infotainment group, at their research and development locations in Northridge, California and Detroit, Michigan. The purpose of these visits was to utilize and combine the powerful brand of Harman and the industry leading knowledge behind Sonic Electronix to begin working together on developing future car audio projects.

General Features:

  • Monoblock GTO Series Class D Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 500 watts x 1 chan.
    • 2 ohms: 750 watts x 1 chan.
  • Max Power: 1200W @ 2ohms, 15.5V DC, 10% THD
  • CEA-2006 Compliant Amplifier
  • Built-in Gain Indicator LEDs and an included setup CD
  • Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Soft start turn-on
  • Signal sensing automatic Turn-on
  • Speaker-level (high-level) inputs with included adapters
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heat-sink for extreme heat dissipation
  • Input sensitivity: High level: 250mV-10V
  • Frequency Response: 10 - 280 Hz (±3dB)
  • Total Harmonic Distortion (THD): 1%
  • Signal to Noise Ration: 80dB
  • Variable low-pass filter: 40- 280 Hz
  • Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
  • Fuse Rating: 40A x 2
  • 4 - 8 gauge 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.
  • Dimensions: 9-11/16"W x 11-15/16"L x 2-9/16"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Check out the JBL GTO Monoblock Amplifiers' Owner's Manual

Specifications & Details

Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
500 watts x 1 channel
RMS Power @ 2 ohms
750 watts x 1 channel
RMS Power @ .5 ohm
Power Specifications - Subwoofer Channel
Peak Power @ .5 ohm
Amplifier Specifications
GTO Series
Marine Certified
Amplifier Class
Number of Channels
1 - Mono
Total Peak Power Output
1200 watts
Total RMS Power Output
750 watts
Maximum Input Gauge Size
Minimum Impedance Unbridged
2 ohms
Frequency Response
THD at Rated RMS Power
Speaker Level Inputs
Yes - with included adapter
Preamp Outputs
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
40 - 280 Hz
Signal-to-Noise Ratio
80 dB
Bass Boost
0 - 12 dB
Remote bass/level controller
Optional (Accessory required and sold separately)
Fan Cooled
Fuse Rating
40A x 2 
Total Fuse Rating
CEA-2031 Compliant
Sonic Certified Amplifier
Not Tested
Hi-Res Certified
Low-Level Input Sensitivity
High-Level Input Sensitivity
What is in the box?
WITB: Amplifiers
Other Accessory #1
Other Accessory #2
Other Accessory #3
Other Accessory #4
Other Accessory #5
Other Accessory #6
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details



Model Number:




Internal SKU:


Internal Product ID:


Product and How-to Videos

  • Harman International: The Pursuit of Great Sound
  • JBL GTO EZ Amplifiers | Car Amp Tuning Made Easy!
  • How To Install an Amplifier: Car Amplifier Basics Part 2

Customer Ratings & Reviews

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Powerful and Easy

This amp is absolutely perfect for a pair of JBL GTO subwoofers. It's very easy and straightforward to control. You get a Hi/Lo filter with plenty of range and Gain LEDs that help you adjust the amp to the right gain. This isn't the fanciest, most advanced amplifier around, but it will do the job and more. I would recommend this amp to anyone who just wants to hook one up, tune it with minimal effort and go on. I had mine up in just an hour or two.

By Corey on May 1, 2014


found this helpful.

Great bass!!

It's awesome amp i'm powering 2 Jbl GT-X1150 total 570w RMS wired at 4ohm the amp is pushing 500w RMS at 4ohms and performing like a hell in my boot! I'm very happy with it. I have powered 2 GT-X sub and 2 Kicker comp wired on 2ohm the amp is pushing 750w RMS on 2ohm and all that gave me small hair tric and a cool flex! You can see the video on You tube video name is Khushmit wagonR.

By Khushmit on September 9, 2012


found this helpful.

Jbl goes bang

This amp will be a pleasant surprise for all those willing to give it a try. I bought this amp and matched it with a nvx vc12 in a 2 cubic foot box tuned to 25hz and the results were amazing . Sound quality of a JL and the impact of a fosgate t1 . Buy this amp and never look back.

By Bass head on July 13, 2014


found this helpful.

Great Value

I am pleased with this amp. It kind of fits perfectly with my needs. I'm the kind of guy that just wanted something to fill in the lower end of the frequency spectrum without getting too crazy out of proportion. This thing and my one ten inch (which is overpowered by it) is plenty at even the highest levels that I find listenable. Since my sub is overpowered, it leaves me room to grow if i decide to, which is nice. one minor criticism is that there isn't a filter for the inaudible tones, but this isn't really a problem, considering the music i listen to never goes below 20hz., at least as far as i know. I think this product is great if you're going for a sound quality kind of setup. It has a foolproof way to set the gain built into it which allows pretty much anyone to set their system up so the bass isn't distorting. The idea seems to be that this amp is for people who prefer crystal clear bass at a level that fits with the rest of the music, in leu of really loud distorted bass that you can hear from a half-mile away. that being said, it is also possible to disreguard the friendly clipping light and crank it up if you want to impress your friends or something with loud distorted bass. but yeah... I like it. It's more than adequate for my setup with plenty of juice to spare.

By Corey on September 18, 2013


found this helpful.


I normally wouldn't write a review, but this amp definitely deserves some recognition! I bought this amp in order to power my 2 JL 10w3v3-4s on a 2 ohm load at a conservative 750rms total, and let me tell you, this amp puts up a fight all day against my JL 1000/1v2 that I was previously running. I bought this amp for its small footprint and power output because I couldn't fit the JL 1000/1v2 in my truck. I definitely got more than what I bargained for. I bench tested the amp and double checked everything with my DD-1 and oscilloscope just to make sure the signal wasn't being clipped and to my surprise, this amp puts out over 1200rms at 2 ohm at 13.8v!!! If this isn't a bargain for power output, I don't know what is! This amp is plenty for my setup. With the amp putting out over 600rms at 4ohm and over 1200rms at 2 ohm, I cant see a reason why someone wouldn't buy this amp. For reference purposes, I do run Zed Audio and Audison amps in my other vehicles, and this gets pretty damn close to output, maybe not fidelity, but for an amp that cost a fraction of the price, pretty damn solid in my book. If I wanted to nit pick, I would say that the setup disk is rather useless as it only plays a 1khz tone which definitely doesn't help you with the gain setup on an amp used for bass. I recommend a 0db 40hz test tone and a 0db 100hz test tone in order to set your gains accordingly as different frequencies clip as different volume levels.

By Alberto on August 10, 2015 checkmarkIcon Verified purchase


found this helpful.

Perfect Replacement...

I bought this to replace an MTX 6500D I've had for at least 15 years. I had it repaired last year for $100, and this year it died again. So instead of having it repaired, I decided to buy a new amp. I picked this one due to the price($150), power output, and size. I have a pair of 10" Kicked Comp slim's that handle 350W RMS in an MTX Thunderform for a 2008 Dodge Ram 1500. This amp fit perfectly under the back seat in the small space provided between the subs in the Thunderform. I had to rewire a few things, but the amp was super easy to install and setup. The included CD was great for adjusting the gain. I normally use a volt meter and calculate the voltage required for the amps RMS power(ohm's law), but the cd took all that work out of it. This amp puts out noticeably more power than my old amp, and I'm quite happy with that. I would recommend this amp to anyone in the market for a quality mono amp.

By Ken on July 31, 2015 checkmarkIcon Verified purchase


found this helpful.

awesome buy

Easy set up, less hassle with filters and adjustments, i have this hooked up to one 10" cvr kicker 2ohms. And this thing rocks i have my bass knob at half and still get a good boom. Plus with sonic electronic's fast shipping and great customer service, i was up and running in no time.

By Keon on August 10, 2015


found this helpful.


its a good amp its pushing my hds215 but more curious of it being a 1200 watt amp does it do 1200rms at 1ohm?

By kev on August 18, 2015


found this helpful.

Jbl-gto 751ez

Great amp. Would recommend this product to any one. Amazing power easy to use. Look great

By David on August 9, 2015


found this helpful.

Great product

Great amp, running 2 Sony xplod XS-GTR121L wired at 2 ohms for 800 watt rms. pounds hard. Easy to set up with the gain led's, has a nice look has plates to cover all the connections to keep everything looking clean. this thing made my lights dim crazy, so you will need to upgrade your stock electrical system. BIG3 upgrade from sonic electronix along with a 1 farad cap solved the problem... Definetly a great buy and worth the money.

By Zack on August 24, 2015 checkmarkIcon Verified purchase


found this helpful.


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• 500 Watt True RMS Output!
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Price: $239.95

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