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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 (49)
Zeus Series (38)
KX Series (15)
MD Series (15)
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CX Series (14)
Picasso-Nano Series (14)
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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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You are currently viewing discontinued products.

American Bass PH4000MD

4000W Class D Amplifier Phantom Series Car Amplifier

PH4000MD big DISCONTINUED
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American Bass PH4000MD

4000W Class D Amplifier Phantom Series Car Amplifier

• Micro Technology Amplifier
• 1 Ohm Stable Class D Mono Block Amplifier
• RMS at 1 Ohm: 2000 Watts
• MAX at 1 Ohm: 4000 Watts
• Frequency Response: 10Hz ~ 220Hz
• Variable Subsonic
• Variable Low Pass Filter: 40Hz ~ 220Hz

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• Micro Technology Amplifier
• 1 Ohm Stable Class D Mono Block Amplifier
• RMS at 1 Ohm: 2000 Watts
• MAX at 1 Ohm: 4000 Watts
• Frequency Response: 10Hz ~ 220Hz
• Variable Subsonic
• Variable Low Pass Filter: 40Hz ~ 220Hz

Alpine MRD-M300 V12 Series

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Alpine MRD-M300 V12 Series

300W RMS x 1 channel at 2 ohm • 150W x 1 channel at 4 ohm • Bass Engine with low-pass filter, subsonic filter, parametric EQ, and Bass Compensator

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300W RMS x 1 channel at 2 ohm • 150W x 1 channel at 4 ohm • Bass Engine with low-pass filter, subsonic filter, parametric EQ, and Bass Compensator

Hifonics BXi 1606D

Brutus Series Class D Monoblock Amplifier (BXi1606D)

BXi1606D big DISCONTINUED
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Hifonics BXi 1606D

Brutus Series Class D Monoblock Amplifier (BXi1606D)

550 watts RMS x 1 chan. @ 4 Ohm / 1100 watts RMS x 1 chan. @ 2 Ohm / 1600 watts x 1 chan. @ 1 Ohm • Super D-Class Topography • Bass Remote • <0.08% THD • Signal to Noise >95 dB

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550 watts RMS x 1 chan. @ 4 Ohm / 1100 watts RMS x 1 chan. @ 2 Ohm / 1600 watts x 1 chan. @ 1 Ohm • Super D-Class Topography • Bass Remote • <0.08% THD • Signal to Noise >95 dB

Kenwood KAC-M1804

400W 4-Channel Class-D Compact Digital Car Marine/ATV Amplifier

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Kenwood KAC-M1804

400W 4-Channel Class-D Compact Digital Car Marine/ATV Amplifier

• RMS Power: 45W x 4 @ 4 ohm
• Total Peak Power: 400W
• CEA-2006 Compliant
• Dimensions: 5-1/2" W x 3-9/16" D x 1-5/16" H

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• RMS Power: 45W x 4 @ 4 ohm
• Total Peak Power: 400W
• CEA-2006 Compliant
• Dimensions: 5-1/2" W x 3-9/16" D x 1-5/16" H

EXCLUSIVE

NVX VCW104 10" 750W Subwoofer + Hifonics 1000Watt Amplified Bass Bundle

NVX VCW104 10" VC-Series Dual 4-ohm Car Subwoofer + Hifonics HFi1000.1D Class D Monoblock HFi Series Amplifier

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NVX VCW104 10" 750W Subwoofer + Hifonics 1000Watt Amplified Bass Bundle

NVX VCW104 10" VC-Series Dual 4-ohm Car Subwoofer + Hifonics HFi1000.1D Class D Monoblock HFi Series Amplifier

• 2 ohm: 750 watts x 1 chan.
• Woven Fiber Pressed Paper Cone
• Custom High Roll Foam Surround With Nylon Stitching
• Die Cast Aluminum Basket
• Dual Nomex Spiders
• Wired HFR-3 remote bass level control included
• Preamp RCA outputs to daisy chain multiple amps
• Frequency Response: 15 - 250 Hz
• Signal to Noise Ration: >95 dB
• Variable low-pass filter: 30 - 250 Hz, 24 dB/octave

• 2 ohm: 750 watts x 1 chan.
• Woven Fiber Pressed Paper Cone
• Custom High Roll Foam Surround With Nylon Stitching
• Die Cast Aluminum Basket
• Dual Nomex Spiders
• Wired HFR-3 remote bass level control included
• Preamp RCA outputs to daisy chain multiple amps
• Frequency Response: 15 - 250 Hz
• Signal to Noise Ration: >95 dB
• Variable low-pass filter: 30 - 250 Hz, 24 dB/octave

Rockford Fosgate Power T10001bd (Silver/Red Box)

1000W Class BD Monoblock Amplifier (T10001 bd)

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Rockford Fosgate Power T10001bd (Silver/Red Box)

1000W Class BD Monoblock Amplifier (T10001 bd)

1000W RMS Class BD Amplifier • 1000W RMS @ 1 Ohm • 750W RMS @ 2 Ohm • Wired Bass Remote Included (30 - 75Hz, 0 - 18dB) • 1/0 AWG power and ground connections with internal ANL fusing • Preamp outputs • Low-Pass and Infrasonic filters • 0 - 180 Degree Phase Control

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1000W RMS Class BD Amplifier • 1000W RMS @ 1 Ohm • 750W RMS @ 2 Ohm • Wired Bass Remote Included (30 - 75Hz, 0 - 18dB) • 1/0 AWG power and ground connections with internal ANL fusing • Preamp outputs • Low-Pass and Infrasonic filters • 0 - 180 Degree Phase Control

Soundstream RUB1.2500D

2500W RMS, Rubicon Series Class D Monoblock Amplifier

Get bigger discounts with our bundled Savings:
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Soundstream RUB1.2500D

2500W RMS, Rubicon Series Class D Monoblock Amplifier

Rubicon Series Monoblock Car Amplifier • 1000 watts x 1 chan @ 4 Ohm • 1700 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 • 1000 watts x 1 chan @ 4 Ohm • 1700 watts x 1 chan @ 2 Ohm • MOSFET Power Supply • LED Protection Indicator • SMT Built In Cooling Fan • Aluminum Alloy Heatsink

Hifonics HFi2000D

2000W RMS, Class D Monoblock HFi Series Amplifier (HFi 2000D)

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Hifonics HFi2000D

2000W RMS, Class D Monoblock HFi Series Amplifier (HFi 2000D)

HFi Series Monoblock Class D Car Amplifier • 1300W x 1-Chan. @ 2 Ohm • 2000W x 1-Chan. @ 1 Ohm • Wired HFR-3 Bass Remote • 4-Way System Protection Circuitry • Preamp RCA Outputs • Blue Illuminated Hifonics Badge

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HFi Series Monoblock Class D Car Amplifier • 1300W x 1-Chan. @ 2 Ohm • 2000W x 1-Chan. @ 1 Ohm • Wired HFR-3 Bass Remote • 4-Way System Protection Circuitry • Preamp RCA Outputs • Blue Illuminated Hifonics Badge

DEI - Directed Audio D600

600W Max, Class D Monoblock Amplifier

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DEI - Directed Audio D600

600W Max, Class D Monoblock Amplifier

Class-D Monoblock Amplifier • 300W RMS x 1 @ 2 • Remote Level Control Included • Variable Crossover • 8dB Bass Boost • Adjustable Input Sensitivity

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Class-D Monoblock Amplifier • 300W RMS x 1 @ 2 • Remote Level Control Included • Variable Crossover • 8dB Bass Boost • Adjustable Input Sensitivity

RE Audio SA500.1

500W Monoblock SA Series Class D Amplifier

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RE Audio SA500.1

500W Monoblock SA Series Class D Amplifier

• 150 Watts RMS x 1 @ 4 ohm
• 250 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 500 Watts
• CEA-2006 Compliant
• Variable Bass Boost : 0 to +12 dB bass boost at 45 Hz

• 150 Watts RMS x 1 @ 4 ohm
• 250 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 500 Watts
• CEA-2006 Compliant
• Variable Bass Boost : 0 to +12 dB bass boost at 45 Hz

Precision Power PPI PDX-10K (Rare Competition Amplifier)

10,000W RMS, Monoblock Class D PDX Series Car Amplifier

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Precision Power PPI PDX-10K (Rare Competition Amplifier)

10,000W RMS, Monoblock Class D PDX Series Car Amplifier

• RMS: 3700W x 1 @ 2 ohm, 6100W x 1 @ 1 ohm, 10000W x 1 @ 0.5 ohm
• Total RMS Power: 10000W
• CEA-2006 Compliant
• Bass Boost: 0-18 dB
• Class D Circuitry
• Dimensions: 12-5/8"W x 23-1/4"L x 2-3/4"H

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• RMS: 3700W x 1 @ 2 ohm, 6100W x 1 @ 1 ohm, 10000W x 1 @ 0.5 ohm
• Total RMS Power: 10000W
• CEA-2006 Compliant
• Bass Boost: 0-18 dB
• Class D Circuitry
• Dimensions: 12-5/8"W x 23-1/4"L x 2-3/4"H

Planet Audio BB4000.1

4000W Max Big Bang Series Monoblock Digital Class D Car Amplifier

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Planet Audio BB4000.1

4000W Max Big Bang Series Monoblock Digital Class D Car Amplifier

• Peak: 1500W x 1 @ 4 ohm, 2000W x 1 @ 2 ohm, 4000W x 1 @ 1 ohm
• Total Peak Power: 4000W
• Class D Circuitry
• Bass Boost: 0-18 dB
• 1 Pair of Preamp Outputs
• Dimensions: 17.125"W x 6.99"L x 2.438"H

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• Peak: 1500W x 1 @ 4 ohm, 2000W x 1 @ 2 ohm, 4000W x 1 @ 1 ohm
• Total Peak Power: 4000W
• Class D Circuitry
• Bass Boost: 0-18 dB
• 1 Pair of Preamp Outputs
• Dimensions: 17.125"W x 6.99"L x 2.438"H

Boss PH3000D

3000W Max Class D Monoblock Phantom Series Power Amplifier

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Boss PH3000D

3000W Max Class D Monoblock Phantom Series Power Amplifier

• RMS: 1200W x 1 @ 4 ohm
• Peak: 2200W x 1 @ 2 ohm, 3000W x 1 @ 1 ohm
• Class D Circuitry
• Bass Boost 0-18 dB
• Low Pass Filter: 50-150 Hz
• Dimensions: 9-1/2"L x 13"W x 2-1/4H

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• RMS: 1200W x 1 @ 4 ohm
• Peak: 2200W x 1 @ 2 ohm, 3000W x 1 @ 1 ohm
• Class D Circuitry
• Bass Boost 0-18 dB
• Low Pass Filter: 50-150 Hz
• Dimensions: 9-1/2"L x 13"W x 2-1/4H

Rockford Fosgate Power T20001bd

2000 watts, Class BD Monoblock Amplifier (T20001 bd)

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Rockford Fosgate Power T20001bd

2000 watts, Class BD Monoblock Amplifier (T20001 bd)

2000W RMS Class BD Amplifier • 2000W RMS @ 1 Ohm • 1500W RMS @ 2 Ohm • Wired Bass Remote Included (35 - 70Hz, 0 - 18dB) • 1/0 AWG power and ground connections with internal ANL fusing • Preamp outputs • Low-Pass and Infrasonic filters • 0 - 180 Degree Phase Control

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2000W RMS Class BD Amplifier • 2000W RMS @ 1 Ohm • 1500W RMS @ 2 Ohm • Wired Bass Remote Included (35 - 70Hz, 0 - 18dB) • 1/0 AWG power and ground connections with internal ANL fusing • Preamp outputs • Low-Pass and Infrasonic filters • 0 - 180 Degree Phase Control

Cerwin-Vega XED3001

300 Watt 2-Ohm Monoblock Amplifier

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Cerwin-Vega XED3001

300 Watt 2-Ohm Monoblock Amplifier

• 200 Watts RMS x 1 @ 4 ohm
• 260 Watts RMS x 1 @ 2 ohm
• 350 Watts RMS x 1 @ 1 ohm
• Total RMS Power: 300 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• FEATURE (Boost/etc)
• HEATSINK
• DIMENSIONS: 6.3"W x 4.7"L x 1.8"H

• 200 Watts RMS x 1 @ 4 ohm
• 260 Watts RMS x 1 @ 2 ohm
• 350 Watts RMS x 1 @ 1 ohm
• Total RMS Power: 300 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• FEATURE (Boost/etc)
• HEATSINK
• DIMENSIONS: 6.3"W x 4.7"L x 1.8"H

Alpine MRD-M605 ** LIMITED TIME PRICE **

600 watts, V12 Series Class D Monoblock Amplifier

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Alpine MRD-M605 ** LIMITED TIME PRICE **

600 watts, V12 Series Class D Monoblock Amplifier

600 watts RMS x 1 at 2 ohm • Bass Engine® with low-pass filter, subsonic filter, parametric EQ, and Bass Compensator • preamp outputs

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600 watts RMS x 1 at 2 ohm • Bass Engine® with low-pass filter, subsonic filter, parametric EQ, and Bass Compensator • preamp outputs

Sony XM-SD61X

MonoBlock Class D Amplifier

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Sony XM-SD61X

MonoBlock Class D Amplifier

Specialty Series Class-D Monoblock Amplifier • 300W RMS x 1 @ 4 • 600W RMS x 1 @ 2 • Bass Remote Included • Blue LED Lighting • High and Low Level Inputs • RCA Passthrough • Protection Circuit

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Specialty Series Class-D Monoblock Amplifier • 300W RMS x 1 @ 4 • 600W RMS x 1 @ 2 • Bass Remote Included • Blue LED Lighting • High and Low Level Inputs • RCA Passthrough • Protection Circuit

Rockford Fosgate Prime R750-1D

750W RMS Prime Series Class-D Monoblock 1-Ohm Stable Amplifier

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Rockford Fosgate Prime R750-1D

750W RMS Prime Series Class-D Monoblock 1-Ohm Stable Amplifier

• RMS: 250W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 750W x 1 @ 1 ohm
• Total RMS Power: 750W
• CEA-2006 Compliant
• Punch Bass: 0 to +12 dB
• Class D Circuitry
• Dimensions: 6-11/16"L x 9-1/8"W x 2"H

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• RMS: 250W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 750W x 1 @ 1 ohm
• Total RMS Power: 750W
• CEA-2006 Compliant
• Punch Bass: 0 to +12 dB
• Class D Circuitry
• Dimensions: 6-11/16"L x 9-1/8"W x 2"H

Earthquake Sound MiNi D2500

2500W Peak (2000W RMS) MiNi Series Class-D Monoblock 1-Ohm Stable Amplifier with Remote Level Control

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Earthquake Sound MiNi D2500

2500W Peak (2000W RMS) MiNi Series Class-D Monoblock 1-Ohm Stable Amplifier with Remote Level Control

• 850 Watts RMS x 1 @ 4 ohm
• 1800 Watts RMS x 1 @ 2 ohm
• 2000 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 2500 Watts
• Built-In Low-Pass and Subsonic Filters
• Compact Size Gives More Installation Options
• Aluminum Heatsink
• Dimensions: 12-13/16" W x 6-5/16" L x 1-7/8" H

• 850 Watts RMS x 1 @ 4 ohm
• 1800 Watts RMS x 1 @ 2 ohm
• 2000 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 2500 Watts
• Built-In Low-Pass and Subsonic Filters
• Compact Size Gives More Installation Options
• Aluminum Heatsink
• Dimensions: 12-13/16" W x 6-5/16" L x 1-7/8" H

SPL FX1-3000D

Class D Monoblock Amplifier

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SPL FX1-3000D

Class D Monoblock Amplifier

FX1 Series 1-Channel Class D Car Amplifier • 900W x 1 chan. @ 4 ohm • 1300W x 1 chan. @ 2 ohm • 170000W x 1 chan. @ 1 ohm • 3000W x 1 chan. Max • Nickel Plated Heavy Duty Power & Speaker Terminals

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FX1 Series 1-Channel Class D Car Amplifier • 900W x 1 chan. @ 4 ohm • 1300W x 1 chan. @ 2 ohm • 170000W x 1 chan. @ 1 ohm • 3000W x 1 chan. Max • Nickel Plated Heavy Duty Power & Speaker Terminals

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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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