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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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Product Type
Price Range
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 GX-A604 Open Box Complete

435W 4-Channel GX Series Amplifier

GX-A604 big DISCONTINUED
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JBL GX-A604 Open Box Complete

435W 4-Channel GX Series Amplifier

  • Item Condition: Open Box Complete
    • • 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

  • Item Condition: Open Box Complete
    • • 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
    EXCLUSIVE

    JBL 4-Channel Amplified Setup with 6-1/2" Speakers and Wiring Kit

    (2) JBL P662s 6-1/2" 2-way Power Series Speakers + JBL GX-A604 4-Ch Amplifier + NVX Wiring Kit

    2-P662s_GX-A604_XKIT84 big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    JBL 4-Channel Amplified Setup with 6-1/2" Speakers and Wiring Kit

    (2) JBL P662s 6-1/2" 2-way Power Series Speakers + JBL GX-A604 4-Ch Amplifier + NVX Wiring Kit

    • 85W x 4 @ 2 ohm
    • Textile Soft Dome Tweeter
    • Plus One Honeycomb Laminate Woofer Cone with Nomex Core
    • 2 Ohm Impedance
    • Oversized voice coils and integrated tinsel leads
    • 8 Gauge 2-Channel Complete Amplifier Installation Kit
    • For Car Audio Systems Up To 600 Watts RMS
    • Silver-Tinned 100% Virgin Copper
    • 2-channel RCA Interconnect Cable

    • 85W x 4 @ 2 ohm
    • Textile Soft Dome Tweeter
    • Plus One Honeycomb Laminate Woofer Cone with Nomex Core
    • 2 Ohm Impedance
    • Oversized voice coils and integrated tinsel leads
    • 8 Gauge 2-Channel Complete Amplifier Installation Kit
    • For Car Audio Systems Up To 600 Watts RMS
    • Silver-Tinned 100% Virgin Copper
    • 2-channel RCA Interconnect Cable

    JBL GX-A604 OPEN BOX

    435W 4-Channel GX Series Amplifier

    GX-A604 big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    JBL GX-A604 OPEN BOX

    435W 4-Channel 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

    • 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 CS50.4 Factory R/B

    268W RMS, Grand Touring Series 4-Channel Amplifier

    CS50.4 big DISCONTINUED
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    JBL CS50.4 Factory R/B

    268W RMS, Grand Touring Series 4-Channel Amplifier

    • • • • • Description Coming Soon! • • • • •

    • • • • • Description Coming Soon! • • • • •

    JBL STAGEA6004

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

    STAGEA6004 big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    JBL STAGEA6004

    560W Max (240W RMS) 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

    VIP Star Icon

    VIP Product Get $21.00 in rewards to spend later

    • 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 CLUB-704

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

    CLUB-704 big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    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

    4

    • 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 Stadium 4

    480W RMS Stadium Series Class-D 4-Channel Amplifier

    Stadium 4 big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    JBL Stadium 4

    480W RMS Stadium Series Class-D 4-Channel Amplifier

    • 100 watts x 4 channel @ 4 ohm
    • 120 watts x 4 channel @ 2 ohm
    • Bridged: 240 watts x 2 channel @ 4 ohm
    • Total RMS Power: 480 watts
    • Class D 2 ohm Stable 4-Channel Amplifier

    VIP Star Icon

    VIP Product Get $55.00 in rewards to spend later

    • 100 watts x 4 channel @ 4 ohm
    • 120 watts x 4 channel @ 2 ohm
    • Bridged: 240 watts x 2 channel @ 4 ohm
    • Total RMS Power: 480 watts
    • Class D 2 ohm Stable 4-Channel Amplifier

    EXCLUSIVE

    JBL GTR-104 with FREE 100% Copper True Spec Installation Kit

    100W RMS 4-Channel Stadium Series Bluetooth Car Amplifier with Clari-Fi Technology and Party Mode + 100% Copper, True Spec 8 Gauge Amplifier Installation Kit

    GTR-104 XKIT44 big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    JBL GTR-104 with FREE 100% Copper True Spec Installation Kit

    100W RMS 4-Channel Stadium Series Bluetooth Car Amplifier with Clari-Fi Technology and Party Mode + 100% Copper, True Spec 8 Gauge Amplifier Installation Kit

    • 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

    81

    • 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

    EXCLUSIVE

    JBL CLUB-704 with FREE 100% Copper True Spec Installation Kit

    1000W Peak (400W RMS) Club Series 4-Channel Amplifier + 100% Copper, True Spec 8 Gauge Amplifier Installation Kit

    CLUB-704 XKIT84 big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    JBL CLUB-704 with FREE 100% Copper True Spec Installation Kit

    1000W Peak (400W RMS) Club Series 4-Channel Amplifier + 100% Copper, True Spec 8 Gauge Amplifier Installation Kit

    • 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

    43

    • 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

    EXCLUSIVE

    JBL GX-A604 435W 4-Channel Car Audio Amplifier + 8 Gauge Amp Installation Kit

    435W 4-Channel GX Series Amplifier (Includes amp wiring kit)

    GX-A604 BAK84 big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    JBL GX-A604 435W 4-Channel Car Audio Amplifier + 8 Gauge Amp Installation Kit

    435W 4-Channel GX Series Amplifier (Includes amp wiring kit)

    • 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

    38

    • 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 Marine MA6004 Amplifier + 4 Sony XS-MP1611 Speakers Kit

    4-Channel + 2 Pairs of 6.5" Marine Speakers + Amplifier Wiring Kit

    MA6004 XSMP1611 big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    JBL Marine MA6004 Amplifier + 4 Sony XS-MP1611 Speakers Kit

    4-Channel + 2 Pairs of 6.5" Marine Speakers + Amplifier Wiring Kit

    • 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

    73

    • 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

    JBL Marine MA6004 Amplifier + 4 Polk Audio DB652 Speakers Kit

    4-Channel + 2 Pairs of 6.5" Marine Speakers + Amplifier Wiring Kit

    MA6004 PolkPKG big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    JBL Marine MA6004 Amplifier + 4 Polk Audio DB652 Speakers Kit

    4-Channel + 2 Pairs of 6.5" Marine Speakers + Amplifier Wiring Kit

    • 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

    82

    • 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

    JBL Club A754 - New (Damaged Packaging, Product A+)

    400W RMS Class H Club Series 4 Channel Amplifier

    AMPCBA754AM big DISCONTINUED
    Go to item page Right Arrow Icon of Right Arrow

    JBL Club A754 - New (Damaged Packaging, Product A+)

    400W RMS Class H Club Series 4 Channel Amplifier

    • 75 watts x 4 channel @ 4 ohm
    • 100 watts x 4 channel @ 2 ohm
    • Bridged: 200 watts x 2 channel @ 4 ohm
    • Total RMS Power: 400 watts
    • Class H 2 ohm Stable 4-Channel Amplifier

    • 75 watts x 4 channel @ 4 ohm
    • 100 watts x 4 channel @ 2 ohm
    • Bridged: 200 watts x 2 channel @ 4 ohm
    • Total RMS Power: 400 watts
    • Class H 2 ohm Stable 4-Channel Amplifier

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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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