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  1. Home
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  3. Discontinued JBL Car Audio & Electronics
  4. Discontinued JBL Car Amplifiers
  5. Discontinued JBL Monoblock Amplifiers

Discontinued JBL Monoblock Amplifiers

JBL Monoblock Amplifiers unleash your subwoofers' full potential with robust and reliable power.

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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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JBL GTO-751EZ Open Box Complete

1200 Watt Max Monoblock GTO Series Class D Car Amplifier

GTO-751EZ big DISCONTINUED
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JBL GTO-751EZ Open Box Complete

1200 Watt Max Monoblock GTO Series Class D Car Amplifier

• Item Condition: Open Box
• RMS: 500W x 1 @ 4 ohm, 750W x 1 @ 2 ohm
• 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

• Item Condition: Open Box
• RMS: 500W x 1 @ 4 ohm, 750W x 1 @ 2 ohm
• 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

** DO NOT USE - DUPLICATE ** JBL CLUB-5501AM (CLUB-5501)

1300W Peak (650W RMS) Club Series Class D Monoblock Amplifier

DO NOT USE CLUB-5501AM big DISCONTINUED
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** DO NOT USE - DUPLICATE ** JBL CLUB-5501AM (CLUB-5501)

1300W Peak (650W RMS) Club Series Class D Monoblock Amplifier

• 370 Watts RMS x 1 @ 4 ohm
• 550 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1300 Watts
• Slim Chassis design to fit more vehicles
• Variable Bass Boost
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation

1

• 370 Watts RMS x 1 @ 4 ohm
• 550 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1300 Watts
• Slim Chassis design to fit more vehicles
• Variable Bass Boost
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation

JBL BP300.1 Power Series

No picture DISCONTINUED
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JBL BP300.1 Power Series

Power Series 300W RMS Mono Subwoofer Amplifier • variable low-pass crossover • variable bass boost • 1-ohm stable • universal interface

Power Series 300W RMS Mono Subwoofer Amplifier • variable low-pass crossover • variable bass boost • 1-ohm stable • universal interface

JBL GTR-1001

2600W Max (1000W RMS) GTR Series 2-Ohm Stable Monoblock Subwoofer Amplifier

GTR-1001 big DISCONTINUED
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JBL GTR-1001

2600W Max (1000W RMS) GTR Series 2-Ohm Stable Monoblock Subwoofer Amplifier

• 700 Watts RMS x 1 @ 4 ohm
• 1000 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2600 Watts
• Variable low-pass filter: 32 - 320 Hz
• Phase Switch: 0 - 180 degree
• Fuse Rating: 35 A x 3

• 700 Watts RMS x 1 @ 4 ohm
• 1000 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2600 Watts
• Variable low-pass filter: 32 - 320 Hz
• Phase Switch: 0 - 180 degree
• Fuse Rating: 35 A x 3

JBL GTO-501EZ

Monoblock GTO Series Class D Car Amplifier

GTO-501EZ big DISCONTINUED
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JBL GTO-501EZ

Monoblock GTO Series Class D Car Amplifier

• RMS: 350W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total Peak Power: 770W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +12 dB
• Class D Circuitry
• Dimensions: 8-7/16"W x 9-11/16"L x 2-5/8"H

3

• RMS: 350W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total Peak Power: 770W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +12 dB
• Class D Circuitry
• Dimensions: 8-7/16"W x 9-11/16"L x 2-5/8"H

JBL GTX 500 (GTX500) - Open Box, Very Good Condition Used

770W Max (500W RMS) GTX Series Class-D Monoblock 2-Ohm Stable Amplifier

GTX500 big DISCONTINUED
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JBL GTX 500 (GTX500) - Open Box, Very Good Condition Used

770W Max (500W RMS) GTX Series Class-D Monoblock 2-Ohm Stable Amplifier

• RMS: 350W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total Peak Power: 770W
Bare wire-to-RCA adapters included
• Signal sensing turn-on
• Signal to Noise Ratio: > 80 dB
• Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)

• RMS: 350W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total Peak Power: 770W
Bare wire-to-RCA adapters included
• Signal sensing turn-on
• Signal to Noise Ratio: > 80 dB
• Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)

JBL GTO601.1II

600 watts, Grand Touring Series Class D Monoblock Amplifier GTO601.1 II

GTO601.1II big DISCONTINUED
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JBL GTO601.1II

600 watts, Grand Touring Series Class D Monoblock Amplifier GTO601.1 II

600 watts, Grand Touring Series Class D Monoblock Amplifier • 424W x 1 chan. @ 4 Ohm • 580W x 1 chan. @ 2 Ohm • Class D power supply • preamp inputs and outputs • CEA-2006 compliant

1

600 watts, Grand Touring Series Class D Monoblock Amplifier • 424W x 1 chan. @ 4 Ohm • 580W x 1 chan. @ 2 Ohm • Class D power supply • preamp inputs and outputs • CEA-2006 compliant

JBL Stage A3001 Open Box

600W Max (300W RMS) Stage Series 2 ohm Stable Monoblock Class-D Amplifier

stagea3001 Open Box big DISCONTINUED
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JBL Stage A3001 Open Box

600W Max (300W RMS) Stage Series 2 ohm Stable Monoblock Class-D Amplifier

• 300 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 600 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• 0 to 180 deg Phase Shift

1

• 300 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 600 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• 0 to 180 deg Phase Shift

JBL BP600.1 Power Series

No picture DISCONTINUED
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JBL BP600.1 Power Series

Power Series 600W RMS Mono Subwoofer Amplifier • variable low-pass crossover • variable bass boost • 1-ohm stable • universal interface

Power Series 600W RMS Mono Subwoofer Amplifier • variable low-pass crossover • variable bass boost • 1-ohm stable • universal interface

JBL BP150.1 Power Series

BP150.1 big DISCONTINUED
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JBL BP150.1 Power Series

Power Series 150W RMS Mono Subwoofer Amplifier • variable low-pass crossover • variable bass boost • 1-ohm stable • universal interface

Power Series 150W RMS Mono Subwoofer Amplifier • variable low-pass crossover • variable bass boost • 1-ohm stable • universal interface

JBL GTO1201.1 1200 Watt Grand Touring Series ( Class D )

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JBL GTO1201.1 1200 Watt Grand Touring Series ( Class D )

1200 Watt Class D Subwoofer Amplifier • Dynamic Power: 1339 watts @ 2 ohm • Variable bass boost • RCA low-level inputs • Full-range preamp outputs • Optional remote level bass control available

1200 Watt Class D Subwoofer Amplifier • Dynamic Power: 1339 watts @ 2 ohm • Variable bass boost • RCA low-level inputs • Full-range preamp outputs • Optional remote level bass control available

JBL GTO24001

2400W RMS Monoblock Class D GT Series Amplifier

GTO24001 big DISCONTINUED
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JBL GTO24001

2400W RMS Monoblock Class D GT Series Amplifier

GTO Series Single-Channel Subwoofer Car Amplifier • 1750W x 1 Chan. @ 4 ohm • 2400 watts x 1 Chan. @ 2 ohm • Tuned Bass EQ • Preamp RCA Outputs • Wired Bass Remote • Heavy Duty Heatsink

10

GTO Series Single-Channel Subwoofer Car Amplifier • 1750W x 1 Chan. @ 4 ohm • 2400 watts x 1 Chan. @ 2 ohm • Tuned Bass EQ • Preamp RCA Outputs • Wired Bass Remote • Heavy Duty Heatsink

JBL BPX1100.1

Power Series Class D Monoblock Amplifier

BPX1100.1 big DISCONTINUED
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JBL BPX1100.1

Power Series Class D Monoblock Amplifier

Power Series Class D Monoblock Car Amplifier • 1141W x 1 chan. @ 4 ohm • 1022W x 1 chan. @ 1 ohm • 1312W x 1 chan. Max • Current Servo Circuitry with Crown Technology • Parallel/bridgeable operation

Power Series Class D Monoblock Car Amplifier • 1141W x 1 chan. @ 4 ohm • 1022W x 1 chan. @ 1 ohm • 1312W x 1 chan. Max • Current Servo Circuitry with Crown Technology • Parallel/bridgeable operation

JBL BPX500.1

500 watts, Power Series Monoblock Amplifier

BPX500.1 big DISCONTINUED
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JBL BPX500.1

500 watts, Power Series Monoblock Amplifier

500W Power Series Monoblock Amplifier • 237W x 2 chan. @ 4 Ohm • 674W x 1 chan. @ 2 Ohm • MOSFET power supply • die-cast aluminum chassis • DBO filter • preamp outputs • CEA-2006 compliant

500W Power Series Monoblock Amplifier • 237W x 2 chan. @ 4 Ohm • 674W x 1 chan. @ 2 Ohm • MOSFET power supply • die-cast aluminum chassis • DBO filter • preamp outputs • CEA-2006 compliant

JBL CLUB-5501 + Free Belva Amp Kit

1300W Peak (650W RMS) Club Series Class D Monoblock Amplifier

CLUB-5501AM, BAK42 big DISCONTINUED
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JBL CLUB-5501 + Free Belva Amp Kit

1300W Peak (650W RMS) Club Series Class D Monoblock Amplifier

• 370 Watts RMS x 1 @ 4 ohm
• 550 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1300 Watts
• Slim Chassis design to fit more vehicles
• Variable Bass Boost
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation

71

• 370 Watts RMS x 1 @ 4 ohm
• 550 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1300 Watts
• Slim Chassis design to fit more vehicles
• Variable Bass Boost
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation

JBL Stadium 600 Amplifier + Free $100 Gift Card

1500W Max (600W RMS) Series 4 ohm Stable Monoblock Class-D Amplifier w/ Remote Bass Control

SonicElectronix-100-Gift-Card,STADIUM600AM big DISCONTINUED
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JBL Stadium 600 Amplifier + Free $100 Gift Card

1500W Max (600W RMS) Series 4 ohm Stable Monoblock Class-D Amplifier w/ Remote Bass Control

• 380 Watts RMS x 1 @ 4 ohm
• 600 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1500 Watts
• CEA-2006 Compliant
• 0 to 9dB Bass Boost

7

• 380 Watts RMS x 1 @ 4 ohm
• 600 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1500 Watts
• CEA-2006 Compliant
• 0 to 9dB Bass Boost

JBL GTO-751EZ Open Box Incomplete

1200 Watt Max Monoblock GTO Series Class D Car Amplifier

GTO-751EZ big DISCONTINUED
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JBL GTO-751EZ Open Box Incomplete

1200 Watt Max Monoblock GTO Series Class D Car Amplifier

• RMS: 500W x 1 @ 4 ohm, 750W x 1 @ 2 ohm
• 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

• RMS: 500W x 1 @ 4 ohm, 750W x 1 @ 2 ohm
• 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

JBL Stadium 1000

2600W Max (1000W RMS) Stadium Series 4 ohm Stable Monoblock Class-D Amplifier w/ Remote Bass Control

STADIUM1000AM big DISCONTINUED
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JBL Stadium 1000

2600W Max (1000W RMS) Stadium Series 4 ohm Stable Monoblock Class-D Amplifier w/ Remote Bass Control

• 700 Watts RMS x 1 @ 4 ohm
• 1000 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2600 Watts
• CEA-2006 Compliant
• 0 to 9 dB Bass Boost

• 700 Watts RMS x 1 @ 4 ohm
• 1000 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2600 Watts
• CEA-2006 Compliant
• 0 to 9 dB Bass Boost

JBL BP1200.1 Power Series Open Box (Complete)

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JBL BP1200.1 Power Series Open Box (Complete)

Power Series 1200W RMS Mono Subwoofer Amplifier • variable low-pass crossover • variable bass boost • 1-ohm stable • universal interface

1

Power Series 1200W RMS Mono Subwoofer Amplifier • variable low-pass crossover • variable bass boost • 1-ohm stable • universal interface

JBL Series II 500 Watt RMS Dual 10" Bass Package (S21024 + GTX500)

Two JBL Series II 10" Subwoofers with Selectable 2 Ohm or 4 Ohm Impedance + GTX Series Class-D Monoblock Amplifier with Installation Kit

S21024X2_GTX500_BAK42 big DISCONTINUED
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JBL Series II 500 Watt RMS Dual 10" Bass Package (S21024 + GTX500)

Two JBL Series II 10" Subwoofers with Selectable 2 Ohm or 4 Ohm Impedance + GTX Series Class-D Monoblock Amplifier with Installation Kit

• 1000W Max Each 10" Series II Car Audio Subwoofer
• Oversized 2.0" Voice Coil
• JBL Mono Subwoofer Amplifier
•Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)
• Complete 4 Gauge 2-Channel Amplifier Installation Kit

• 1000W Max Each 10" Series II Car Audio Subwoofer
• Oversized 2.0" Voice Coil
• JBL Mono Subwoofer Amplifier
•Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)
• Complete 4 Gauge 2-Channel Amplifier Installation Kit

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    JBL Monoblock Amplifiers Information

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