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

Discontinued JBL 4-Channel Amplifiers

JBL 4-Channel Amplifiers balance your car's audio system for a harmonious and immersive sound.

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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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You are currently viewing discontinued products.

JBL MS-A1004

400W True RMS, 4-Channel MS Class D Amplifier w/ Digital Input Mixer and Graphical Status Display

MS-A1004 big DISCONTINUED
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JBL MS-A1004

400W True RMS, 4-Channel MS Class D Amplifier w/ Digital Input Mixer and Graphical Status Display

• 400W RMS
• Preamp RCA Outputs
• CD For System Setup
• CEA-2006 Compliant
• Built-In Display Shows Tone/Gain Settings
• Hi2 Input Setting

10

• 400W RMS
• Preamp RCA Outputs
• CD For System Setup
• CEA-2006 Compliant
• Built-In Display Shows Tone/Gain Settings
• Hi2 Input Setting

JBL GTO1004

600W RMS, 4-Channel Grand Touring Series Amplifier

GTO1004 big DISCONTINUED
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JBL GTO1004

600W RMS, 4-Channel Grand Touring Series Amplifier

Grand Touring Series 4-Channel Class AB Car Amplifier • 100W x 4 chan. @ 4 ohm • 150W x 4 chan. @ 2 ohm • 150W x 4 chan. Max (4 ohm) • Bridgeable Operation • Preamp RCA outputs • Cast-Aluminum Heatsink

16

Grand Touring Series 4-Channel Class AB Car Amplifier • 100W x 4 chan. @ 4 ohm • 150W x 4 chan. @ 2 ohm • 150W x 4 chan. Max (4 ohm) • Bridgeable Operation • Preamp RCA outputs • Cast-Aluminum Heatsink

JBL GX-A604 435W 4-Channel GX Series Amplifier

GX Series Amplifier

GX-A604 big DISCONTINUED
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JBL GX-A604 435W 4-Channel GX Series Amplifier

GX Series Amplifier

• RMS Power: 60W x 4 @ 4 ohm, 85W x 4 @ 2 ohm
• Total Peak Power: 435W
• High and Low Pass Filters
• Dimensions: 8-1/8" W x 11-13/16" L x 2-1/16" H

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• RMS Power: 60W x 4 @ 4 ohm, 85W x 4 @ 2 ohm
• Total Peak Power: 435W
• High and Low Pass Filters
• Dimensions: 8-1/8" W x 11-13/16" L x 2-1/16" H

JBL GT5-A604

640W Max, 4-Channel GT Series Class AB Amplifier

GT5-A604 big DISCONTINUED
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JBL GT5-A604

640W Max, 4-Channel GT Series Class AB Amplifier

GT Series 4-Channel Class AB Car Amplifier • 60W x 4 chan. @ 4 ohm • 80W x 4 chan. @ 2 ohm • 160W x 2 chan. @ 4 ohm • 160W x 4 chan. Max • Preamp RCA outputs • Cast-aluminum heatsink

13

GT Series 4-Channel Class AB Car Amplifier • 60W x 4 chan. @ 4 ohm • 80W x 4 chan. @ 2 ohm • 160W x 2 chan. @ 4 ohm • 160W x 4 chan. Max • Preamp RCA outputs • Cast-aluminum heatsink

JBL CS60.4

4-Channel Full-Range Amplifier with Electronic Crossover

CS60.4 big DISCONTINUED
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JBL CS60.4

4-Channel Full-Range Amplifier with Electronic Crossover

4-Channel Full-Range Amplifier with Electronic Crossover • S/N ratio: 86 dB • RMS Power Output: 4 ohm: 60 watts x 4 / 2 ohm: 145 watts x 4 • MOSFET power supply • Preamp Outputs • Frequency Response: 10 Hz - 27 kHz

3

4-Channel Full-Range Amplifier with Electronic Crossover • S/N ratio: 86 dB • RMS Power Output: 4 ohm: 60 watts x 4 / 2 ohm: 145 watts x 4 • MOSFET power supply • Preamp Outputs • Frequency Response: 10 Hz - 27 kHz

JBL GTO504

560W Max, 4-Channel Grand Touring Series Class AB Amplifier

GTO504 big DISCONTINUED
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JBL GTO504

560W Max, 4-Channel Grand Touring Series Class AB Amplifier

Grand Touring Series 4-Channel Class AB Car Amplifier • 55W x 4 chan. @ 4 ohm • 70W x 4 chan. @ 2 ohm • 140W x 4 chan. Max • Preamp RCA outputs • Cast-aluminum heatsink

8

Grand Touring Series 4-Channel Class AB Car Amplifier • 55W x 4 chan. @ 4 ohm • 70W x 4 chan. @ 2 ohm • 140W x 4 chan. Max • Preamp RCA outputs • Cast-aluminum heatsink

JBL STAGEA6004 (Open Box, Complete)

560W Max (240W RMS) Stage Series 4 ohm Stable 4-Channel Class-D Amplifier w/ Remote Level Control

STAGEA6004 big DISCONTINUED
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JBL STAGEA6004 (Open Box, Complete)

560W Max (240W RMS) Stage Series 4 ohm Stable 4-Channel Class-D Amplifier w/ Remote Level Control

• 60 Watts RMS x 4 @ 4 ohm
• 70 Watts RMS x 4 @ 2 ohm
•
• Total Peak Power: 560 Watts
• CEA-2006 Compliant
• 12dB Bass Boost
• Alloy Heat Sink
• Frequency Response: 20 - 20000 Hz

• 60 Watts RMS x 4 @ 4 ohm
• 70 Watts RMS x 4 @ 2 ohm
•
• Total Peak Power: 560 Watts
• CEA-2006 Compliant
• 12dB Bass Boost
• Alloy Heat Sink
• Frequency Response: 20 - 20000 Hz

JBL PX300.4

770W Max, Power Series 4-Channel Amplifier

PX300.4 big DISCONTINUED
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JBL PX300.4

770W Max, Power Series 4-Channel Amplifier

300W Power Series 4-Channel Amplifier • 123.5W x 4 chan. @ 4 Ohm • 169W x 4 chan. @ 2 Ohm • MOSFET power supply • die-cast aluminum chassis • DBO filter • preamp outputs • CEA-2006 compliant

4

300W Power Series 4-Channel Amplifier • 123.5W x 4 chan. @ 4 Ohm • 169W x 4 chan. @ 2 Ohm • MOSFET power supply • die-cast aluminum chassis • DBO filter • preamp outputs • CEA-2006 compliant

JBL CS50.4

162W RMS, CS Series 4-Channel Amplifier

CS50.4 big DISCONTINUED
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JBL CS50.4

162W RMS, CS Series 4-Channel Amplifier

CS Series 4-Channel Class AB Car Amplifier • 67W x 4 chan. @ 4 ohm • 82W x 4 chan. @ 2 ohm • 162W x 2 chan. @ 4 ohm • MOSFET power supply • 4/3/2 channel operation • Preamp RCA outputs • DC, short circuit, overheat, and overload protection circuitry

CS Series 4-Channel Class AB Car Amplifier • 67W x 4 chan. @ 4 ohm • 82W x 4 chan. @ 2 ohm • 162W x 2 chan. @ 4 ohm • MOSFET power supply • 4/3/2 channel operation • Preamp RCA outputs • DC, short circuit, overheat, and overload protection circuitry

JBL GTO-804EZ

940W 4-Channel GTO Series Class A/B Car Amplifier

GTO-804EZ big DISCONTINUED
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JBL GTO-804EZ

940W 4-Channel GTO Series Class A/B Car Amplifier

• 4 ohm: 80 watts x 4-Chan.
• 2 ohm: 100 watts x 4-Chan.
• Bridged; 4 ohm: 200 watts x 2 chan.
• Max power output: 235 watts x 4-Chan.

4

• 4 ohm: 80 watts x 4-Chan.
• 2 ohm: 100 watts x 4-Chan.
• Bridged; 4 ohm: 200 watts x 2 chan.
• Max power output: 235 watts x 4-Chan.

JBL GTO75.4 520 Watts 4 Channel

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JBL GTO75.4 520 Watts 4 Channel

520 watt 4 channel amplifier • Dynamic Power: 163 watts @ 2 ohm • Variable bass boost • RCA low-level inputs • Full-range preamp outputs • MOSFET power supply

520 watt 4 channel amplifier • Dynamic Power: 163 watts @ 2 ohm • Variable bass boost • RCA low-level inputs • Full-range preamp outputs • MOSFET power supply

JBL GTO-504EZ

640W 4-Channel GTO Series Class A/B Car Amplifier

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JBL GTO-504EZ

640W 4-Channel GTO Series Class A/B Car Amplifier

• 4 ohm: 50 watts x 4-Chan.
• 2 ohm: 75 watts x 4-Chan.
• Bridged; 4 ohm: 150 watts x 2 chan.
• Max power output: 160 watts x 4-Chan.

3

• 4 ohm: 50 watts x 4-Chan.
• 2 ohm: 75 watts x 4-Chan.
• Bridged; 4 ohm: 150 watts x 2 chan.
• Max power output: 160 watts x 4-Chan.

EXCLUSIVE

JBL + Rockford Fosgate Full Range Amplified System w/ 5x7"/6x8" Speakers

JBL 5x7"/6x8" 2-Way GT7-Series Coaxial Speakers + Rockford Fosgate R300X4 4-Channel Class AB Amplifier + Rockford Fosgate Amp Kit

2-GT7-86_R300X4_RFK8i_RFI-20 big DISCONTINUED
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JBL + Rockford Fosgate Full Range Amplified System w/ 5x7"/6x8" Speakers

JBL 5x7"/6x8" 2-Way GT7-Series Coaxial Speakers + Rockford Fosgate R300X4 4-Channel Class AB Amplifier + Rockford Fosgate Amp Kit

• 50W x 4-Chan. @ 4 ohm
• 1-3/16" PEI Edge Driven Dome Tweeter
• Polypropylene Plus One™ Cone and Foam Surround
• Variable Bass Boost
• Variable High-Pass Crossover
• CEA-2006 Compliant
• Soft Start Turn-On

• 50W x 4-Chan. @ 4 ohm
• 1-3/16" PEI Edge Driven Dome Tweeter
• Polypropylene Plus One™ Cone and Foam Surround
• Variable Bass Boost
• Variable High-Pass Crossover
• CEA-2006 Compliant
• Soft Start Turn-On

JBL CLUB-704

1000W Peak (400W RMS) Club Series 4-Channel Amplifier

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JBL CLUB-704

1000W Peak (400W RMS) Club Series 4-Channel Amplifier

• 70 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS Bridged x 2 @ 4 ohm
• Total Peak Power: 1000 Watts
• Slim chassis provides more flexible mounting options
• Split-dome convection heat-sink for extreme heat dissipation

• 70 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS Bridged x 2 @ 4 ohm
• Total Peak Power: 1000 Watts
• Slim chassis provides more flexible mounting options
• Split-dome convection heat-sink for extreme heat dissipation

JBL P80.4 Power Series

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JBL P80.4 Power Series

Power Series 2 Channel 320W RMS • variable high-pass/low-pass crossover • orange illumination and green LED power indicator

Power Series 2 Channel 320W RMS • variable high-pass/low-pass crossover • orange illumination and green LED power indicator

JBL Marine MA6004

600W Max 320W RMS MA Series Class-AB 4-Channel Bridgeable Marine Amplifier

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JBL Marine MA6004

600W Max 320W RMS MA Series Class-AB 4-Channel Bridgeable Marine Amplifier

• 60W x 4-Chan. @ 4 Ohm
• 80W x 4-Chan. @ 2 Ohm
• 160W x 2 Chan. @ 4 Ohm
• 320W RMS
• MOSFET Power Supply
• Preamp RCA outputs
• Thermal, Voltage and Short Protection Circuitry

31

• 60W x 4-Chan. @ 4 Ohm
• 80W x 4-Chan. @ 2 Ohm
• 160W x 2 Chan. @ 4 Ohm
• 320W RMS
• MOSFET Power Supply
• Preamp RCA outputs
• Thermal, Voltage and Short Protection Circuitry

EXCLUSIVE

JBL 6-1/2" & 6x9" Speakers + Precision Power 4-Channel Amplifier

List price $559.89: JBL GTO628/GTO938 6-1/2" / 6x9" Grand Touring Series Coaxial Speakers + PPI i320.4 4-Ch Class D Full-Range Digital Amplifier

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JBL 6-1/2" & 6x9" Speakers + Precision Power 4-Channel Amplifier

List price $559.89: JBL GTO628/GTO938 6-1/2" / 6x9" Grand Touring Series Coaxial Speakers + PPI i320.4 4-Ch Class D Full-Range Digital Amplifier

• 80W x 4-Chan. @ 2 ohm
• Mylar / Titanium Composite Dome Tweeter
• Mounting Depth: 2-1/16"
• Plus One Cone Material
• 2 Ohm Impedance
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• Surface Mount Technology (SMT)

163

• 80W x 4-Chan. @ 2 ohm
• Mylar / Titanium Composite Dome Tweeter
• Mounting Depth: 2-1/16"
• Plus One Cone Material
• 2 Ohm Impedance
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• Surface Mount Technology (SMT)

EXCLUSIVE

Two Pair of JBL GTO628 with Pioneer GM-A4604

List price $429.89: 6-1/2" 2-Way GTO Series Coaxial Speakers + 4-Channel GM Series Bridgeable Class AB Car Amplifier

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Two Pair of JBL GTO628 with Pioneer GM-A4604

List price $429.89: 6-1/2" 2-Way GTO Series Coaxial Speakers + 4-Channel GM Series Bridgeable Class AB Car Amplifier

• 60W x 4 @ 2 ohm
• Mylar / Titanium Composite Dome Tweeter
• Mounting Depth: 2-1/16"
• Plus One Cone Material
• CEA-2006 Compliant
• Dimensions: 12-1/2"W x 8-1/2"L x 2-3/8"H

• 60W x 4 @ 2 ohm
• Mylar / Titanium Composite Dome Tweeter
• Mounting Depth: 2-1/16"
• Plus One Cone Material
• CEA-2006 Compliant
• Dimensions: 12-1/2"W x 8-1/2"L x 2-3/8"H

EXCLUSIVE

Rockford R300X4 Amp+6.5" 2-Way Speakers+Amp Kit+RCA cable

4 JBL Speakers + Rockford Fosgate R300X4 4-Channel Amplifier + Rockford Fosgate Amp Kit

GT7-6C_GT7-6_R300X4_RFK8i_RFI-20 big DISCONTINUED
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Rockford R300X4 Amp+6.5" 2-Way Speakers+Amp Kit+RCA cable

4 JBL Speakers + Rockford Fosgate R300X4 4-Channel Amplifier + Rockford Fosgate Amp Kit

• 50W x 4-Chan. @ 4 ohm
• 1-3/16" PEI Edge Driven Dome Tweeter
• Polypropylene Plus One™ Cone and Foam Surround
• Variable Bass Boost
• Variable High-Pass Crossover
• CEA-2006 Compliant
• Soft Start Turn-On

• 50W x 4-Chan. @ 4 ohm
• 1-3/16" PEI Edge Driven Dome Tweeter
• Polypropylene Plus One™ Cone and Foam Surround
• Variable Bass Boost
• Variable High-Pass Crossover
• CEA-2006 Compliant
• Soft Start Turn-On

JBL GTR-104

100W RMS 4-Channel Stadium Series Bluetooth Car Amplifier with Clari-Fi Technology and Party Mode

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JBL GTR-104

100W RMS 4-Channel Stadium Series Bluetooth Car Amplifier with Clari-Fi Technology and Party Mode

• 100 Watts RMS x 4 @ 4 ohm
• 120 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 1500 Watts
• Clari-fi Technology
• Bluetooth Streaming
• ADAS Input
• Cabin mounted control panel

1

• 100 Watts RMS x 4 @ 4 ohm
• 120 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 1500 Watts
• Clari-fi Technology
• Bluetooth Streaming
• ADAS Input
• Cabin mounted control panel

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    JBL 4-Channel Amplifiers Information

    A 4 channel car amplifier from JBL will provide your vehicle with the power it requires. These amps can operate four channels and JBL is a leader in amplification solutions. Power your speakers with a JBL 4-channel amplifier for a great all around sound.
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