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

Discontinued Alpine Class-D Amplifiers

Alpine's Class-D amplifiers combine efficiency with powerful, clear audio output.

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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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Condition
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Alpine PDX-F6 Open Box, Accepatble Condition (Used)

600W PDX Series 4-Channel Power Density Digital Class D Car Amplifier(Open Box Complete Used Functional)

PDX-F6 big DISCONTINUED
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Alpine PDX-F6 Open Box, Accepatble Condition (Used)

600W PDX Series 4-Channel Power Density Digital Class D Car Amplifier(Open Box Complete Used Functional)

• Item Condition: Open Box
• RMS Power: 150W x 4-Chan. @ 4 ohm
• 600 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

• Item Condition: Open Box
• RMS Power: 150W x 4-Chan. @ 4 ohm
• 600 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

Alpine MRV-F300 OPEN BOX COMPLETE

300W 4-Channel Class D V-Power Series Compact Car Amplifier

MRV-F300 big DISCONTINUED
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Alpine MRV-F300 OPEN BOX COMPLETE

300W 4-Channel Class D V-Power Series Compact Car Amplifier

Opened and Never Installed
• RMS Power: 50W x 4-Chan. @ 4 ohm, 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Same Power in a 40% Smaller Chassis

Opened and Never Installed
• RMS Power: 50W x 4-Chan. @ 4 ohm, 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Same Power in a 40% Smaller Chassis

Alpine MRP-M650 R/B

Class D Monoblock Amplifier

MRP-M650 big DISCONTINUED
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Alpine MRP-M650 R/B

Class D Monoblock Amplifier

Class D mono subwoofer car amplifier • 400W RMS x 1 @ 4 ohm • 600W RMS x 1 @ 2 ohm • CEA-2006 compliant • Gold-plated screw terminals

Class D mono subwoofer car amplifier • 400W RMS x 1 @ 4 ohm • 600W RMS x 1 @ 2 ohm • CEA-2006 compliant • Gold-plated screw terminals

Alpine MRV-F300 Open Box Complete

300W 4-Channel Class D V-Power Series Compact Car Amplifier

MRV-F300 big DISCONTINUED
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Alpine MRV-F300 Open Box Complete

300W 4-Channel Class D V-Power Series Compact Car Amplifier

• Item Condition: Open Box Complete
• RMS Power: 50W x 4-Chan. @ 4 ohm, 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Same Power in a 40% Smaller Chassis

• Item Condition: Open Box Complete
• RMS Power: 50W x 4-Chan. @ 4 ohm, 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Same Power in a 40% Smaller Chassis

Alpine PDXV9 (Open Box, Complete)

1600W Max, 5-Channel PDX Series Car Amplifier

pdxv9 big DISCONTINUED
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Alpine PDXV9 (Open Box, Complete)

1600W Max, 5-Channel PDX Series Car Amplifier

• Full-Range RMS: 100W x 4 @ 4 ohm, 100W x 4 @ 2 ohm
• Subwoofer RMS: 500W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• CEA-2006 Compliant
• Super Efficient PDX Power Supply >90%
• Power Management Processor
• Dimensions: 10-5/8"W x 7-1/2"D x 2"H

10

• Full-Range RMS: 100W x 4 @ 4 ohm, 100W x 4 @ 2 ohm
• Subwoofer RMS: 500W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• CEA-2006 Compliant
• Super Efficient PDX Power Supply >90%
• Power Management Processor
• Dimensions: 10-5/8"W x 7-1/2"D x 2"H

Alpine MRV-F300 Open Box Missing (Acceptable, Used)

300W 4-Channel Class D V-Power Series Compact Car Amplifier Open Box Missing (Acceptable, Used)

MRV-F300 big DISCONTINUED
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Alpine MRV-F300 Open Box Missing (Acceptable, Used)

300W 4-Channel Class D V-Power Series Compact Car Amplifier Open Box Missing (Acceptable, Used)

• RMS Power: 50W x 4-Chan. @ 4 ohm, 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Same Power in a 40% Smaller Chassis

• RMS Power: 50W x 4-Chan. @ 4 ohm, 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Same Power in a 40% Smaller Chassis

Alpine X-A90M (Open Box, Complete)

900 W RMS X-Series Class-D Monoblock 2 ohm Stable Amplifier

X-A90M big DISCONTINUED
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Alpine X-A90M (Open Box, Complete)

900 W RMS X-Series Class-D Monoblock 2 ohm Stable Amplifier

• 600 Watts RMS x 4 @ 4 ohm
• 900 Watts RMS x 4 @ 2 ohm
• CEA-2006 Compliant
• Low Pass and High Pass Filters
• 0 - 12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 11-3/4" W x 7-5/8" L x 2" H

• 600 Watts RMS x 4 @ 4 ohm
• 900 Watts RMS x 4 @ 2 ohm
• CEA-2006 Compliant
• Low Pass and High Pass Filters
• 0 - 12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 11-3/4" W x 7-5/8" L x 2" H

Alpine PDX-5 Open Box

(Open Box) 600W RMS, Class D 5-Channel PDX Series Amplifier

PDX-5 big DISCONTINUED
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Alpine PDX-5 Open Box

(Open Box) 600W RMS, Class D 5-Channel PDX Series Amplifier

PDX Series 5-Channel Class D Car Amplifier • 75W x 4 chan. + 300W x 1 chan. @ 4 ohm • 75W x 4 chan. + 300W x 1 chan. @ 2 ohm • 150W x 2 chan. + 300W x 1 chan. @ 4 ohm • Stackable operation allows for multi-amplifier setup

PDX Series 5-Channel Class D Car Amplifier • 75W x 4 chan. + 300W x 1 chan. @ 4 ohm • 75W x 4 chan. + 300W x 1 chan. @ 2 ohm • 150W x 2 chan. + 300W x 1 chan. @ 4 ohm • Stackable operation allows for multi-amplifier setup

Alpine MRX-M110 - Open Box, Good Condition Used

1100W RMS Monoblock Class D X-Power Series Car Amplifier - Open Box, Good Condition Used

MRX-M110 big DISCONTINUED
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Alpine MRX-M110 - Open Box, Good Condition Used

1100W RMS Monoblock Class D X-Power Series Car Amplifier - Open Box, Good Condition Used

• RMS: 650W x 1 @ 4 ohm, 1100W x 1 @ 2 ohm
• Total RMS Power: 1100W
• CEA-2006 Compliant
• Bass Boost: 0-12 dB at 50 Hz
• Multi-Stage Power Management Circuit
• Dimensions: 9"L x 13-3/8"W x 2-1/4"H

• RMS: 650W x 1 @ 4 ohm, 1100W x 1 @ 2 ohm
• Total RMS Power: 1100W
• CEA-2006 Compliant
• Bass Boost: 0-12 dB at 50 Hz
• Multi-Stage Power Management Circuit
• Dimensions: 9"L x 13-3/8"W x 2-1/4"H

Alpine PDX-F4(Open Box Incomplete Used Functional)

400W PDX Series 4-Channel Power Density Digital Class D Car Amplifier(Open Box Incomplete Used Functional)

PDX-F4 big DISCONTINUED
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Alpine PDX-F4(Open Box Incomplete Used Functional)

400W PDX Series 4-Channel Power Density Digital Class D Car Amplifier(Open Box Incomplete Used Functional)

• Item Condition: Open Box, Missing Parts, Acceptable, Used
• RMS Power: 100W x 4-Chan. @ 4 ohm
• 400 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

• Item Condition: Open Box, Missing Parts, Acceptable, Used
• RMS Power: 100W x 4-Chan. @ 4 ohm
• 400 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

Alpine XA90V (Open Box, Complete)

900W RMS X-Series Class-D 5-Channel 2 Ohm Stable Amplifier

X-A90V big DISCONTINUED
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Alpine XA90V (Open Box, Complete)

900W RMS X-Series Class-D 5-Channel 2 Ohm Stable Amplifier

• 600 Watts RMS x 5 @ 4 ohm (75W x 4, 300W x 1)
• 900 Watts RMS x 5 @ 2 ohm (100W x 4, 500W x 1)
• 900 Watts RMS x 5 @ 4 ohm, Bridged (200W x 2, 500W x 1)
• CEA-2006 Compliant
• Low Pass, High Pass and Subsonic Filters
• 0 - 12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 11-3/4" W x 7-5/8" L x 2" H

1

• 600 Watts RMS x 5 @ 4 ohm (75W x 4, 300W x 1)
• 900 Watts RMS x 5 @ 2 ohm (100W x 4, 500W x 1)
• 900 Watts RMS x 5 @ 4 ohm, Bridged (200W x 2, 500W x 1)
• CEA-2006 Compliant
• Low Pass, High Pass and Subsonic Filters
• 0 - 12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 11-3/4" W x 7-5/8" L x 2" H

Alpine X-A90M - Like New Open Box

900 W RMS X-Series Class-D Monoblock 2 ohm Stable Amplifier

X-A90M big DISCONTINUED
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Alpine X-A90M - Like New Open Box

900 W RMS X-Series Class-D Monoblock 2 ohm Stable Amplifier

• 600 Watts RMS x 4 @ 4 ohm
• 900 Watts RMS x 4 @ 2 ohm
• CEA-2006 Compliant
• Low Pass and High Pass Filters
• 0 - 12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 11-3/4" W x 7-5/8" L x 2" H

• 600 Watts RMS x 4 @ 4 ohm
• 900 Watts RMS x 4 @ 2 ohm
• CEA-2006 Compliant
• Low Pass and High Pass Filters
• 0 - 12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 11-3/4" W x 7-5/8" L x 2" H

Alpine MRV-M250 (Open Box)

250W Mono Block V-Power Class D Subwoofer Car Amplifier

MRV-M250 big DISCONTINUED
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Alpine MRV-M250 (Open Box)

250W Mono Block V-Power Class D Subwoofer Car Amplifier

• Item Condition: Open Box, Like New
• RMS Power: 150W x 1 @ 4 ohm, 250W x 1 @ 2 ohm
• Total Peak Power: 250W
• CEA-2006 Compliant
• Dimensions: 7-1/2" W x 7-7/8" L x 2-3/16"H

3

• Item Condition: Open Box, Like New
• RMS Power: 150W x 1 @ 4 ohm, 250W x 1 @ 2 ohm
• Total Peak Power: 250W
• CEA-2006 Compliant
• Dimensions: 7-1/2" W x 7-7/8" L x 2-3/16"H

Alpine Marine PDX-5M R/B (Core Only)

5-Channel Class-D Marine Digital PDX Amplifier

PDX-5M big DISCONTINUED
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Alpine Marine PDX-5M R/B (Core Only)

5-Channel Class-D Marine Digital PDX Amplifier

PDX Series 5-Channel Class D Marine Boat Amplifier • 75W x 4 chan. + 300W x 1 chan. @ 4 ohm • 75W x 4 chan. + 300W x 1 chan. @ 2 ohm • 150W x 2 chan. + 300W x 1 chan. @ 4 ohm • Stackable operation allows for multi-amplifier setup

PDX Series 5-Channel Class D Marine Boat Amplifier • 75W x 4 chan. + 300W x 1 chan. @ 4 ohm • 75W x 4 chan. + 300W x 1 chan. @ 2 ohm • 150W x 2 chan. + 300W x 1 chan. @ 4 ohm • Stackable operation allows for multi-amplifier setup

Alpine MRV-M500-OPEN BOX

500W V-Power Series Class D Monoblock Digital Amplifier

MRV-M500 big DISCONTINUED
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Alpine MRV-M500-OPEN BOX

500W V-Power Series Class D Monoblock Digital Amplifier

• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total Peak Power: 500W
• CEA-2006 Compliant Amplifier
• 4-Channel Speaker-Level Inputs
• Heavy Duty Aluminum Alloy Heat-Sink
• Dimensions: 7-7/8"W x 7-7/8"L x 2-3/16"H

• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total Peak Power: 500W
• CEA-2006 Compliant Amplifier
• 4-Channel Speaker-Level Inputs
• Heavy Duty Aluminum Alloy Heat-Sink
• Dimensions: 7-7/8"W x 7-7/8"L x 2-3/16"H

Alpine Marine PDX-5M

5-Channel Class-D Marine Digital PDX Amplifier

PDX-5M big DISCONTINUED
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Alpine Marine PDX-5M

5-Channel Class-D Marine Digital PDX Amplifier

PDX Series 5-Channel Class D Marine Boat Amplifier • 75W x 4 chan. + 300W x 1 chan. @ 4 ohm • 75W x 4 chan. + 300W x 1 chan. @ 2 ohm • 150W x 2 chan. + 300W x 1 chan. @ 4 ohm • Stackable operation allows for multi-amplifier setup

PDX Series 5-Channel Class D Marine Boat Amplifier • 75W x 4 chan. + 300W x 1 chan. @ 4 ohm • 75W x 4 chan. + 300W x 1 chan. @ 2 ohm • 150W x 2 chan. + 300W x 1 chan. @ 4 ohm • Stackable operation allows for multi-amplifier setup

Alpine MRX-F30 R/B

Factory Refurbished 300W RMS, 4-Channel X Power Series Car Amplifier

MRX-F30 big DISCONTINUED
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Alpine MRX-F30 R/B

Factory Refurbished 300W RMS, 4-Channel X Power Series Car Amplifier

MRX Series 4-Channel Car Amplifier • 50W RMS @ 4 Ohm x 4 Channels • 75W RMS @ 2 Ohm x 4 Channels • 150W RMS @ 4 Ohm Bridged x 2 Channels • Variable Low-Pass Crossover • Variable High-Pass Crossover • Variable Bass Boost

MRX Series 4-Channel Car Amplifier • 50W RMS @ 4 Ohm x 4 Channels • 75W RMS @ 2 Ohm x 4 Channels • 150W RMS @ 4 Ohm Bridged x 2 Channels • Variable Low-Pass Crossover • Variable High-Pass Crossover • Variable Bass Boost

Alpine Marine PDX-4.100M R/B

(Refurbished) Marine Series 4-Channel Power Density Digital Amplifier (PDX4.100M)

PDX-4.100M big DISCONTINUED
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Alpine Marine PDX-4.100M R/B

(Refurbished) Marine Series 4-Channel Power Density Digital Amplifier (PDX4.100M)

Marine Series 4-Channel Class D Car Amplifier • 100W x 4 chan. @ 4 ohm • 100W x 4 chan. @ 2 ohm • 200W x 2 chan. @ 4 ohm • 4/3/2 channel operation • Coated to protect unit against harsh marine environment • Compact and stackable design

Marine Series 4-Channel Class D Car Amplifier • 100W x 4 chan. @ 4 ohm • 100W x 4 chan. @ 2 ohm • 200W x 2 chan. @ 4 ohm • 4/3/2 channel operation • Coated to protect unit against harsh marine environment • Compact and stackable design

Alpine MRV-M1200 Open Box (Complete)

2400W Peak (1200W RMS) Class-D Monoblock Amplifier with Remote Bass Knob Included

MRV-M1200 big DISCONTINUED
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Alpine MRV-M1200 Open Box (Complete)

2400W Peak (1200W RMS) Class-D Monoblock Amplifier with Remote Bass Knob Included

• 600 Watts RMS x 1 @ 4 ohm
• 1200 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2400 Watts
• CEA-2006 Compliant
• 40% smaller footprint than its predecessors
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation
• 13-1/2"W x 2-1/4"L x 8-5/8"H

4

• 600 Watts RMS x 1 @ 4 ohm
• 1200 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2400 Watts
• CEA-2006 Compliant
• 40% smaller footprint than its predecessors
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation
• 13-1/2"W x 2-1/4"L x 8-5/8"H

Alpine MRV-F300 (Open Box, Complete)

300W 4-Channel Class D V-Power Series Compact Car Amplifier

MRV-F300 big DISCONTINUED
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Alpine MRV-F300 (Open Box, Complete)

300W 4-Channel Class D V-Power Series Compact Car Amplifier

• RMS Power: 50W x 4-Chan. @ 4 ohm, 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Same Power in a 40% Smaller Chassis

• RMS Power: 50W x 4-Chan. @ 4 ohm, 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Same Power in a 40% Smaller Chassis

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    Alpine Class-D Amplifiers Information

    Alpine Class-D amplifiers includes efficient, Class-D circuitry. This circuit makes the most out of the limited power available from your car’s electrical system keeping your amp cool. Check out the amazing audio signal and power of the Alpine Class-D amplifiers.
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