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  1. Home
  2. Discontinued Car Audio & Electronics
  3. Discontinued Car Amplifiers
  4. Discontinued Class-D Amplifiers

Discontinued Class-D Amplifiers

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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.
Brutus Series (70)
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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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Condition

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You are currently viewing discontinued products.

Infinity Kappa K4 Amplifier with Clari-fi Technology

1500W Peak (480W RMS) High Performance Kappa Series Class-D 4-Channel 2-Ohm Stable Amplifier with Bluetooth and Clari-Fi Technology

K4-2 big DISCONTINUED
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Infinity Kappa K4 Amplifier with Clari-fi Technology

1500W Peak (480W RMS) High Performance Kappa Series Class-D 4-Channel 2-Ohm Stable Amplifier with Bluetooth and Clari-Fi Technology

• 100 Watts RMS x 4 @ 4 ohm
• 120 Watts RMS x 4 @ 2 ohm
• 240 Watts RMS x 2 @ 4 ohm Bridged
• Total Peak Power: 1500 Watts
• Bluetooth Streaming
• Clari-fi Technology
• Wired control panel
• Speaker-level (high-level) inputs

• 100 Watts RMS x 4 @ 4 ohm
• 120 Watts RMS x 4 @ 2 ohm
• 240 Watts RMS x 2 @ 4 ohm Bridged
• Total Peak Power: 1500 Watts
• Bluetooth Streaming
• Clari-fi Technology
• Wired control panel
• Speaker-level (high-level) inputs

NVX JAD1200.1 - Open Box, Acceptable Condition (Used)

True 1200W RMS, Class D Monoblock Amplifier with Bass Remote Included(Open Box Complete Used Functional)

JAD1200.1 big DISCONTINUED
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NVX JAD1200.1 - Open Box, Acceptable Condition (Used)

True 1200W RMS, Class D Monoblock Amplifier with Bass Remote Included(Open Box Complete Used Functional)

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

Alpine PDX-1.1000

1000 watts, Class D Monoblock Power Density Digital Amplifier (PDX1.1000)

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Alpine PDX-1.1000

1000 watts, Class D Monoblock Power Density Digital Amplifier (PDX1.1000)

Class D Monoblock Power Density Digital Amplifier � 1000W x 1 chan. @ 4/2 Ohm � stackable installation design � MOSFET power supply � adjustable gain control � RCA inputs � CEA-2006 compliant � speaker connectors

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Class D Monoblock Power Density Digital Amplifier � 1000W x 1 chan. @ 4/2 Ohm � stackable installation design � MOSFET power supply � adjustable gain control � RCA inputs � CEA-2006 compliant � speaker connectors

Alpine MRD-M301 Class D MonoBlock

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Alpine MRD-M301 Class D MonoBlock

350 watts RMS at 2 ohm • Class D • Bass Engine® with low-pass filter, subsonic filter, and parametric EQ

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350 watts RMS at 2 ohm • Class D • Bass Engine® with low-pass filter, subsonic filter, and parametric EQ

Power Acoustik A2400DB

2400W Max, Class D Monoblock Amplifier

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Power Acoustik A2400DB

2400W Max, Class D Monoblock Amplifier

2400 watts Monoblock Power Amplifier • 1800 watts RMS x 1 chan @ 1 ohm • 1400 watts RMS x 1 chan. @ 2 ohm • 900 watts RMS x 1 chan. @ 4 ohm • S/N Ratio: >100 dB

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2400 watts Monoblock Power Amplifier • 1800 watts RMS x 1 chan @ 1 ohm • 1400 watts RMS x 1 chan. @ 2 ohm • 900 watts RMS x 1 chan. @ 4 ohm • S/N Ratio: >100 dB

Pioneer GM-D8500M

1200W Max GM Digital Series Class D Monoblock Amplifier

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Pioneer GM-D8500M

1200W Max GM Digital Series Class D Monoblock Amplifier

GM Series Monoblock Car Amplifier • Class D • 300W x 1 Chan. @ 4 Ohm • 600W x 1 Chan. @ 2 Ohm • 1200W Max • 0-12 dB Bass Boost • Chrome-Plated Terminals • Speaker-Level Inputs • Balanced Isolator Input Circuit

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GM Series Monoblock Car Amplifier • Class D • 300W x 1 Chan. @ 4 Ohm • 600W x 1 Chan. @ 2 Ohm • 1200W Max • 0-12 dB Bass Boost • Chrome-Plated Terminals • Speaker-Level Inputs • Balanced Isolator Input Circuit

Kenwood KAC-8151D with Bass Remote

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Kenwood KAC-8151D with Bass Remote

3

Kicker CXA300.1 Amplifier (43CXA300.1)

600W Peak (300W RMS) Monoblock Class-D Subwoofer Car Amplifier

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Kicker CXA300.1 Amplifier (43CXA300.1)

600W Peak (300W RMS) Monoblock Class-D Subwoofer Car Amplifier


• 150 Watts RMS x 1 @ 4 ohm
• 300 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 600 Watts
• Preamp RCA outputs to daisy chain multiple amps
• Variable Low-Pass Crossover: 50 - 200Hz 12dB/octave
• Variable Bass Boost: 0 to +12 dB bass boost at 40 Hz
• Dimensions: 7-3/16"W x 8-1/8"L x 2-3/8"H

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• 150 Watts RMS x 1 @ 4 ohm
• 300 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 600 Watts
• Preamp RCA outputs to daisy chain multiple amps
• Variable Low-Pass Crossover: 50 - 200Hz 12dB/octave
• Variable Bass Boost: 0 to +12 dB bass boost at 40 Hz
• Dimensions: 7-3/16"W x 8-1/8"L x 2-3/8"H

Hifonics BXi 1610D

1600W RMS, Brutus BXi Series Class D Monoblock Amplifier (BXi1610D)

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Hifonics BXi 1610D

1600W RMS, Brutus BXi Series Class D Monoblock Amplifier (BXi1610D)

1600W RMS, Brutus BXi Series Class D Monoblock Amplifier • 550W x 1 Chan. @ 4 Ohm • 1100W x 1 Chan. @ 2 Ohm • 1600W x 1 Chan. @ 1 Ohm • Super D-Class • Tuned Bass EQ • 1 Ohm Stable • Balanced Line Input

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1600W RMS, Brutus BXi Series Class D Monoblock Amplifier • 550W x 1 Chan. @ 4 Ohm • 1100W x 1 Chan. @ 2 Ohm • 1600W x 1 Chan. @ 1 Ohm • Super D-Class • Tuned Bass EQ • 1 Ohm Stable • Balanced Line Input

JL Audio e1800D

Class D Monoblock Amplifier

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JL Audio e1800D

Class D Monoblock Amplifier

1000W RMS Class D Monoblock Amplifier • High-Damping Class D Circuit • Built-in Crossover: LPF 20 - 400Hz • 1000W x 1 @ 2 Ohm RMS (14.4V) • 640W x 1 @ 4 Ohm RMS (14.4V) • Pass-through RCA Outputs • High-level Inputs • CEA-2006 Compliant

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1000W RMS Class D Monoblock Amplifier • High-Damping Class D Circuit • Built-in Crossover: LPF 20 - 400Hz • 1000W x 1 @ 2 Ohm RMS (14.4V) • 640W x 1 @ 4 Ohm RMS (14.4V) • Pass-through RCA Outputs • High-level Inputs • CEA-2006 Compliant

Power Acoustik EG1-2500D

2500W Peak (1250W RMS) Edge Series 1-Ohm Stable Class-D Monoblock Amplifier

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Power Acoustik EG1-2500D

2500W Peak (1250W RMS) Edge Series 1-Ohm Stable Class-D Monoblock Amplifier

• 400 Watts RMS x 1 @ 4 ohm
• 800 Watts RMS x 1 @ 2 ohm
• 1250 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 2500 Watts
• Military Grade PCB w/ PWM MOSFET power supply
• Variable low-pass filter: 30 - 250 Hz
• Subsonic filter: 20 - 50 Hz
• Variable Bass Boost: 0 to +18 dB bass boost

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• 400 Watts RMS x 1 @ 4 ohm
• 800 Watts RMS x 1 @ 2 ohm
• 1250 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 2500 Watts
• Military Grade PCB w/ PWM MOSFET power supply
• Variable low-pass filter: 30 - 250 Hz
• Subsonic filter: 20 - 50 Hz
• Variable Bass Boost: 0 to +18 dB bass boost

Precision Power PPI S2000.1D

2000W RMS Sedona Series Class D Monoblock Amplifier

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Precision Power PPI S2000.1D

2000W RMS Sedona Series Class D Monoblock Amplifier

• RMS: 750W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total RMS Power: 2000W
• Class D Circuitry
• Selectable Bass Boost: 0, +6, or +12 dB at 55 Hz
• High-Level Inputs
• Dimensions: 19"L x 9-1/2"W x 2-3/8"H

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• RMS: 750W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total RMS Power: 2000W
• Class D Circuitry
• Selectable Bass Boost: 0, +6, or +12 dB at 55 Hz
• High-Level Inputs
• Dimensions: 19"L x 9-1/2"W x 2-3/8"H

Planet Audio BB2400.1

3000W Max, Big Bang Series Class D Monoblock Amplifier with Remote Level Control

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Planet Audio BB2400.1

3000W Max, Big Bang Series Class D Monoblock Amplifier with Remote Level Control

Big Bang Series Monoblock Class D Car Amplifier • 3000W Max • 2400W x 1-Chan @ 1 Ohm • Strap Two Amps Together for Twice the Power • Subsonic Filter • Variable Bass Boost (0 to +18 dB) • Wired Remote Bass Level Control

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Big Bang Series Monoblock Class D Car Amplifier • 3000W Max • 2400W x 1-Chan @ 1 Ohm • Strap Two Amps Together for Twice the Power • Subsonic Filter • Variable Bass Boost (0 to +18 dB) • Wired Remote Bass Level Control

Infinity Reference 1300a

342W Max, Reference Series Class D Monoblock Amplifier

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Infinity Reference 1300a

342W Max, Reference Series Class D Monoblock Amplifier

• RMS: 200W x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• Total RMS Power: 300W
• CEA-2006 Compliant
• Bass Boost: 0-6 dB
• Class D Circuitry
• Dimensions: 14-3/4"L x 9"W x 2-11/16H

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• RMS: 200W x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• Total RMS Power: 300W
• CEA-2006 Compliant
• Bass Boost: 0-6 dB
• Class D Circuitry
• Dimensions: 14-3/4"L x 9"W x 2-11/16H

Pioneer GM-D9605 (Ships as GM-9705)

2000W Max 5 Channel GM Digital Champion Series Class D Amplifier

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Pioneer GM-D9605 (Ships as GM-9705)

2000W Max 5 Channel GM Digital Champion Series Class D Amplifier

• RMS: 75 Watts x 4 + 350 Watts x 1 @ 4 ohm
•RMS: 100 Watts x 4 + 600 Watts x 1 @ 2 ohm
• 200 Watts RMS x 2 @ 4 ohm, Bridged
• Total Peak Power: 2000 Watts
• CEA-2006 Compliant
• CEA-2006 Compliant Amplifier
• Wired remote bass boost level control included
• Speaker-level (high-level) inputs

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• RMS: 75 Watts x 4 + 350 Watts x 1 @ 4 ohm
•RMS: 100 Watts x 4 + 600 Watts x 1 @ 2 ohm
• 200 Watts RMS x 2 @ 4 ohm, Bridged
• Total Peak Power: 2000 Watts
• CEA-2006 Compliant
• CEA-2006 Compliant Amplifier
• Wired remote bass boost level control included
• Speaker-level (high-level) inputs

Hifonics BRX1000.1D

1000W Brutus Series Monoblock Class D Car Amplifier

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Hifonics BRX1000.1D

1000W Brutus Series Monoblock Class D Car Amplifier

• RMS: 400W x 1 @ 4 ohm, 700W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
• Total Peak Power: 1000W
• CEA-2006 Compliant
• Ultra-Fi™ Pulse Width Modulated MOSFET Power Supply
• Heavy Duty Aluminum Alloy Heat-Sink
• Dimensions: 10.31"W x 14.35"L x 2.52"H

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• RMS: 400W x 1 @ 4 ohm, 700W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
• Total Peak Power: 1000W
• CEA-2006 Compliant
• Ultra-Fi™ Pulse Width Modulated MOSFET Power Supply
• Heavy Duty Aluminum Alloy Heat-Sink
• Dimensions: 10.31"W x 14.35"L x 2.52"H

Sony XM-4S

Slim Series 4-Channel Amplifier

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Sony XM-4S

Slim Series 4-Channel Amplifier

Slim Series 4-Channel Amplifier • RMS Power Output: 4 ohm: 50 watts x 4 / 2 ohm: 60 watts x 4 • Frequency Response: 5 Hz - 100 kHz • Harmonic Distortion:: 0.005% • Built in Protection Circuit • Speaker-level inputs with high-level sensing turn-on • Preamp inputs and outputs

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Slim Series 4-Channel Amplifier • RMS Power Output: 4 ohm: 50 watts x 4 / 2 ohm: 60 watts x 4 • Frequency Response: 5 Hz - 100 kHz • Harmonic Distortion:: 0.005% • Built in Protection Circuit • Speaker-level inputs with high-level sensing turn-on • Preamp inputs and outputs

Soundstream RUB1.1600D

1600W RMS, Rubicon Series Class D Monoblock Amplifier

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Soundstream RUB1.1600D

1600W RMS, Rubicon Series Class D Monoblock Amplifier

Rubicon Series Monoblock Car Amplifier • 700 watts x 1 chan @ 4 Ohm • 1100 watts x 1 chan @ 2 Ohm • MOSFET Power Supply • LED Protection Indicator • SMT Built In Cooling Fan • Aluminum Alloy Heatsink

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Rubicon Series Monoblock Car Amplifier • 700 watts x 1 chan @ 4 Ohm • 1100 watts x 1 chan @ 2 Ohm • MOSFET Power Supply • LED Protection Indicator • SMT Built In Cooling Fan • Aluminum Alloy Heatsink

Rockford Fosgate Prime R400-4D

400W 4-Channel Class D Prime Series Full Range Amplifier

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Rockford Fosgate Prime R400-4D

400W 4-Channel Class D Prime Series Full Range Amplifier

• 75W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 200W x 2 Chan. @ 4 ohm Bridged
• Variable Bass Boost
• Variable High-Pass Crossover
• CEA-2006 Compliant

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• 75W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 200W x 2 Chan. @ 4 ohm Bridged
• Variable Bass Boost
• Variable High-Pass Crossover
• CEA-2006 Compliant

MB Quart ONX1.1500D

1500W RMS ONYX Series Class D Monoblock Amplifier (ONX-1.1500D)

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MB Quart ONX1.1500D

1500W RMS ONYX Series Class D Monoblock Amplifier (ONX-1.1500D)

ONYX Series Monoblock Class D Car Amplifier • 1500W x 1 Chan @ 1 Ohm • 1000W x 1 Chan @ 2 Ohm • Dual Speaker Terminals • Preamp RCA Outputs • 4-Way System Protection Circuitry • Piano Black Gloss Finish

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ONYX Series Monoblock Class D Car Amplifier • 1500W x 1 Chan @ 1 Ohm • 1000W x 1 Chan @ 2 Ohm • Dual Speaker Terminals • Preamp RCA Outputs • 4-Way System Protection Circuitry • Piano Black Gloss Finish

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    FAQ Frequently asked questions in Discontinued Class-D Amplifiers

    Class D Amplifiers Frequently Asked Questions (FAQ)
    Class D amplifiers are a type of switching amplifier known for their high efficiency and compact size. Unlike traditional Class A, B, and AB amplifiers that use continuous analog voltage to amplify audio signals, Class D amplifiers employ a digital switching technique. This process rapidly switches the output transistors on and off, effectively turning them into binary switches that deliver the audio signal to the speaker. The switching nature of Class D amplifiers drastically reduces power wastage, resulting in higher efficiency and less heat production. As a result, Class D amplifiers are ideal for applications with limited space or power constraints, making them popular in car audio, home theater systems, and portable devices.
    Yes, modern Class D amplifiers have made significant advancements in audio fidelity and can deliver high-quality sound performance. While traditional audiophiles may have associated Class D with lower audio quality due to early models' limitations, today's Class D amplifiers have overcome many of these challenges. With advancements in switching technology, filtering, and feedback mechanisms, Class D amplifiers can now offer exceptional audio reproduction that rivals traditional Class AB amplifiers. Additionally, Class D amplifiers' efficiency and lower heat generation make them well-suited for high-power audio applications where traditional amplifiers would be impractical.
    Yes, Class D amplifiers are versatile and can power various speaker types, including subwoofers, woofers, mid-range, and tweeters. When selecting a Class D amplifier for your speakers, consider the power output (wattage) and impedance rating. Ensure that the amplifier's power rating matches or slightly exceeds your speakers' power handling capabilities to prevent underpowering or overpowering, which can lead to distortion or speaker damage. Additionally, check the amplifier's impedance range to ensure compatibility with your speakers' impedance. Most Class D amplifiers can handle both 4-ohm and 2-ohm loads, making them suitable for a wide range of speaker configurations.
    No, Class D amplifiers are known for their high efficiency, which results in significantly less heat generation compared to other amplifier classes like Class A or Class AB. The digital switching technique used in Class D amplifiers reduces power loss, resulting in a more efficient conversion of electrical energy into audio output. As a result, Class D amplifiers remain relatively cool even at high volume levels, making them suitable for space-constrained installations and applications where heat dissipation is a concern. Their cool operation also extends the lifespan of internal components and reduces the need for large heat sinks or fans.
    Yes, many Class D amplifiers support bridge mode, allowing you to increase the power output when driving a single speaker or subwoofer. In bridge mode, the amplifier combines the power output from two channels into a single channel, effectively doubling the power delivered to the speaker. However, it's essential to follow the manufacturer's guidelines and ensure that your amplifier supports bridging. Additionally, pay attention to the speaker's impedance requirements, as bridging may change the amplifier's impedance capabilities. If you're unsure or need assistance with bridging your Class D amplifier, contact Sonic Electronix's knowledgeable staff, who can help you find the right amplifier and configuration for your audio setup. With their compact size, high efficiency, and versatility, Class D amplifiers offer a compelling solution for various audio applications, delivering powerful and clear sound performance with minimal heat output.
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