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  1. Home
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  3. Discontinued Alpine Car Audio & Electronics
  4. Discontinued Alpine Car Amplifiers
  5. Discontinued Alpine Mini Car Amps

Discontinued Alpine Mini Car Amps

Compact size, massive power with Alpine's mini 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.
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.

Alpine KTP-445U Power Pack

180W RMS Power Pack Series Compact Class D 4-Channel Car Amplifier

KTP-445U big DISCONTINUED
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Alpine KTP-445U Power Pack

180W RMS Power Pack Series Compact Class D 4-Channel Car Amplifier

• RMS Power: 45W x 4-Chan. @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

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24

• RMS Power: 45W x 4-Chan. @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

Alpine PDX-M6 (Open Box)

600W RMS PDX Series Monoblock Power Density Class D Digital Car Amplifier

PDX-M6 big DISCONTINUED
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Alpine PDX-M6 (Open Box)

600W RMS PDX Series Monoblock Power Density Class D Digital Car Amplifier

• Item Condition: Open Box
• RMS: 600W x 1 @ 4 ohm, 600W x 1 @ 2 ohm
• Total RMS Power: 600W
• CEA-2006 Compliant
• 6-Layer Glass Epoxy PC Board and Compact Size
• Thermal Protection Circuitry
• Dimensions: 7-9/16"D x 10-1/8"W x 2"H

• Item Condition: Open Box
• RMS: 600W x 1 @ 4 ohm, 600W x 1 @ 2 ohm
• Total RMS Power: 600W
• CEA-2006 Compliant
• 6-Layer Glass Epoxy PC Board and Compact Size
• Thermal Protection Circuitry
• Dimensions: 7-9/16"D x 10-1/8"W x 2"H

Alpine PDX-M12 (Open Box)

1200W RMS, PDX Series Monoblock Power Density Class D Digital Car Amplifier

PDX-M12 big DISCONTINUED
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Alpine PDX-M12 (Open Box)

1200W RMS, PDX Series Monoblock Power Density Class D Digital Car Amplifier

• Item Condition: Open Box
• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• 6-Layer Glass Epoxy PC Board and Compact Size
• Thermal Protection Circuitry
• Dimensions: 7-9/16"D x 10-1/8"W x 2"H

21

• Item Condition: Open Box
• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• 6-Layer Glass Epoxy PC Board and Compact Size
• Thermal Protection Circuitry
• Dimensions: 7-9/16"D x 10-1/8"W x 2"H

Alpine PDX-F4 Open Box, Accepatble Condition (Used)

400W PDX Series 4-Channel Power Density Digital Class D Car Amplifier

PDX-F4 big DISCONTINUED
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Alpine PDX-F4 Open Box, Accepatble Condition (Used)

400W PDX Series 4-Channel Power Density Digital Class D Car Amplifier

• Item Condition: Open Box
• 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
• 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 PDX-V9 Open Box Missing (Good, Used)

1600W Max, 5-Channel PDX Series Car Amplifier Open Box Missing (Good, Used)

PDX-V9 big DISCONTINUED
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Alpine PDX-V9 Open Box Missing (Good, Used)

1600W Max, 5-Channel PDX Series Car Amplifier Open Box Missing (Good, Used)

• 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

• 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 PDX-M12 (Open Box Complete Like New)

1200W RMS, PDX Series Monoblock Power Density Class D Digital Car Amplifier(Open Box Complete Like New)

PDX-M12 big DISCONTINUED
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Alpine PDX-M12 (Open Box Complete Like New)

1200W RMS, PDX Series Monoblock Power Density Class D Digital Car Amplifier(Open Box Complete Like New)

• Item Condition: Open Box, Like New
• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• 6-Layer Glass Epoxy PC Board and Compact Size
• Thermal Protection Circuitry
• Dimensions: 7-9/16"D x 10-1/8"W x 2"H

• Item Condition: Open Box, Like New
• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• 6-Layer Glass Epoxy PC Board and Compact Size
• Thermal Protection Circuitry
• Dimensions: 7-9/16"D x 10-1/8"W x 2"H

Alpine KTA-450 (Like New (Open Box))

400W Peak (200W RMS) Class D Power Pack Series 4 Channel Car Amplifier

KTA-450 big DISCONTINUED
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Alpine KTA-450 (Like New (Open Box))

400W Peak (200W RMS) Class D Power Pack Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

• 50 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Alpine PDX-F4_XKIT42

400W PDX Series 4-Channel Power Density Digital Class D Car Amplifier + FREE 100% Copper, 2-Chan. True Spec 4 Gauge Amp Installation Kit

No picture DISCONTINUED
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Alpine PDX-F4_XKIT42

400W PDX Series 4-Channel Power Density Digital Class D Car Amplifier + FREE 100% Copper, 2-Chan. True Spec 4 Gauge Amp Installation Kit

• 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
• 4 Gauge 2-Channel X-Series Complete Amplifier Installation Kit

143

• 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
• 4 Gauge 2-Channel X-Series Complete Amplifier Installation Kit

Alpine Marine PDX-5M-Like New

5-Channel Class-D Marine Digital PDX Amplifier

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

5-Channel Class-D Marine Digital PDX Amplifier

• Full-Range RMS: 75W x 4 @ 4 ohm, 75W x 4 @ 2 ohm
• Subwoofer RMS: 300W x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• CEA-2006 Compliant
• Salt/Fog/UV Weathering Protection
• Discrete Pre-amp Stage
• Dimensions: 10-1/8"L x 7-9/16"W x 2-7/16"H

• Full-Range RMS: 75W x 4 @ 4 ohm, 75W x 4 @ 2 ohm
• Subwoofer RMS: 300W x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• CEA-2006 Compliant
• Salt/Fog/UV Weathering Protection
• Discrete Pre-amp Stage
• Dimensions: 10-1/8"L x 7-9/16"W x 2-7/16"H

Alpine KTA-450 (Open Box, Great)

400W Peak (200W RMS) Class D Power Pack Series 4 Channel Car Amplifier

KTA-450 big DISCONTINUED
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Alpine KTA-450 (Open Box, Great)

400W Peak (200W RMS) Class D Power Pack Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

• 50 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Alpine KTP-445A (Open Box, Great)

180W RMS Class D Power Pack Series 4 Channel Car Amplifier

KTP-445A big DISCONTINUED
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Alpine KTP-445A (Open Box, Great)

180W RMS Class D Power Pack Series 4 Channel Car Amplifier

• 45 watts x 4 channel @ 4 ohm
• Total RMS Power: 180 watts
• Class D 2 ohm Stable 4-Channel Amplifier

• 45 watts x 4 channel @ 4 ohm
• Total RMS Power: 180 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Alpine KTA-450 (Open Box, Good)

400W Peak (200W RMS) Class D Power Pack Series 4 Channel Car Amplifier

KTA-450 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Alpine KTA-450 (Open Box, Good)

400W Peak (200W RMS) Class D Power Pack Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

• 50 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Alpine KTA-30MW Tough Power Pack - New (Damaged Packaging, Product A+)

600W Peak (300W RMS) Power Pack Series Class-D Monoblock Weather Resistant Amplifier

KTA-30MW big DISCONTINUED
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Alpine KTA-30MW Tough Power Pack - New (Damaged Packaging, Product A+)

600W Peak (300W RMS) Power Pack Series Class-D Monoblock Weather Resistant Amplifier

• 300 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable Monoblock Amplifier

• 300 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable Monoblock Amplifier

Alpine KTA-450 Power Pack - New (Damaged Packaging, Product A+)

400W Peak (200W RMS) Class D Power Pack Series 4 Channel Car Amplifier

KTA-450 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Alpine KTA-450 Power Pack - New (Damaged Packaging, Product A+)

400W Peak (200W RMS) Class D Power Pack Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Bridged: 100 watts x 2 channel @ 4 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

20

• 50 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Bridged: 100 watts x 2 channel @ 4 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Alpine KTP-445A Power Pack - New (Damaged Packaging, Product A+)

180W RMS Class D Power Pack Series 4 Channel Car Amplifier

KTP-445A big DISCONTINUED
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Alpine KTP-445A Power Pack - New (Damaged Packaging, Product A+)

180W RMS Class D Power Pack Series 4 Channel Car Amplifier

• Power Pack 4-Channel Class D for Select Alpine In-Dash Receivers
• 45 watts x 4 channel @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

10

• Power Pack 4-Channel Class D for Select Alpine In-Dash Receivers
• 45 watts x 4 channel @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

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    Alpine Mini Car Amps Information

    Amplify your audio with Alpine min amps. These small but powerful amps can fit in tight spaces and provide enough power for your car audio system. Alpine has the knowledge and experience when it comes to mini amps.
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