Garage
Shop

Discontinued Alpine 4-Channel Amplifiers

Drive multiple speakers with Alpine's versatile 4-channel amplifiers for rich sound.

Loading...
Filters

Shop the Category

filter-icon Filters & Sort
You are currently viewing discontinued products.

Alpine PDR-F50

500W PDR Series 4/3/2 Channel Class D Digital Amplifier

Go to item page Right Arrow Icon of Right Arrow

500W PDR Series 4/3/2 Channel Class D Digital Amplifier

• RMS Power: 85W x 4 @ 4 ohm, 125W x 2 @ 2 ohm, 250W x 2 @ 4 ohm, Bridged
• CEA-2006 Compliant Amplifier
• Rotatable Illuminated Alpine Badge
• Top-Side Control Panel w/ Removable Cover
• Voltage ON/OFF Sensing for OEM Upgrade
• Dimensions: 9"W x 6.5"L x 2.0"H

• RMS Power: 85W x 4 @ 4 ohm, 125W x 2 @ 2 ohm, 250W x 2 @ 4 ohm, Bridged
• CEA-2006 Compliant Amplifier
• Rotatable Illuminated Alpine Badge
• Top-Side Control Panel w/ Removable Cover
• Voltage ON/OFF Sensing for OEM Upgrade
• Dimensions: 9"W x 6.5"L x 2.0"H

(2) Alpine BBXF1200

600 Watt Max 4-Channel Class A/B Car Audio Amplifier

Go to item page Right Arrow Icon of Right Arrow

600 Watt Max 4-Channel Class A/B Car Audio Amplifier

• 50 Watts RMS x 4 @ 4 ohm
• 70 Watts RMS x 4 @ 2 ohm
• 130 Watts RMS x 2 @ 4 ohm
• Total Peak Power: 600 Watts
• High and Low Pass Filters
• 0-12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 9.4" W x 12.9" L x 2" H

• 50 Watts RMS x 4 @ 4 ohm
• 70 Watts RMS x 4 @ 2 ohm
• 130 Watts RMS x 2 @ 4 ohm
• Total Peak Power: 600 Watts
• High and Low Pass Filters
• 0-12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 9.4" W x 12.9" L 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)

Go to item page Right Arrow Icon of Right Arrow

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 PDX-4.150

4-Channel Power Density Digital Amplifier (PDX4.150)

Go to item page Right Arrow Icon of Right Arrow

4-Channel Power Density Digital Amplifier (PDX4.150)

4-Channel Power Density Digital Amplifier • 150W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

4-Channel Power Density Digital Amplifier • 150W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

Alpine PDX-4.150 R/B

(Factory Refurbished) 4-Channel Power Density Digital Amplifier (PDX4.150)

Go to item page Right Arrow Icon of Right Arrow

(Factory Refurbished) 4-Channel Power Density Digital Amplifier (PDX4.150)

4-Channel Power Density Digital Amplifier • 150W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

4-Channel Power Density Digital Amplifier • 150W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

(4) Alpine BBXF1200

600 Watt Max 4-Channel Class A/B Car Audio Amplifiers

Go to item page Right Arrow Icon of Right Arrow

600 Watt Max 4-Channel Class A/B Car Audio Amplifiers

• 50 Watts RMS x 4 @ 4 ohm
• 70 Watts RMS x 4 @ 2 ohm
• 130 Watts RMS x 2 @ 4 ohm
• Total Peak Power: 600 Watts
• High and Low Pass Filters
• 0-12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 9.4" W x 12.9" L x 2" H

• 50 Watts RMS x 4 @ 4 ohm
• 70 Watts RMS x 4 @ 2 ohm
• 130 Watts RMS x 2 @ 4 ohm
• Total Peak Power: 600 Watts
• High and Low Pass Filters
• 0-12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 9.4" W x 12.9" L x 2" 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)

Go to item page Right Arrow Icon of Right Arrow

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 MRP-F600

600W RMS, 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

600W RMS, 4-Channel Amplifier

V Power Series 4-Channel Class AB Car Amplifier • 100W x 4 chan. @ 4 ohm • 150W x 4 chan. @ 2 ohm • 300W x 2 chan. @ 4 ohm • 300W x 4 chan. Max approx. • 4/3/2 channel operation • Non-fading preamp RCA outputs

V Power Series 4-Channel Class AB Car Amplifier • 100W x 4 chan. @ 4 ohm • 150W x 4 chan. @ 2 ohm • 300W x 2 chan. @ 4 ohm • 300W x 4 chan. Max approx. • 4/3/2 channel operation • Non-fading preamp RCA outputs

Alpine MRV-F300 Open Box Complete

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

Go to item page Right Arrow Icon of Right Arrow

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

• 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 MRX-F65

1300W 4-Channel X Power Series Car Amplifier

Go to item page Right Arrow Icon of Right Arrow

1300W 4-Channel X Power Series Car Amplifier

• RMS Power: 110W x 4-Chan. @ 4 ohm, 160W x 4-Chan. @ 2 ohm
• Bridged, 4 ohm: 320 watts x 4-Chan.
• Pulse Width Modulated MOSFET Power Supply

• RMS Power: 110W x 4-Chan. @ 4 ohm, 160W x 4-Chan. @ 2 ohm
• Bridged, 4 ohm: 320 watts x 4-Chan.
• Pulse Width Modulated MOSFET Power Supply

Alpine MRP-F450 Factory R/B

REFURBISHED UNIT MISSING BOX AND ENDCAPS

Go to item page Right Arrow Icon of Right Arrow

REFURBISHED UNIT MISSING BOX AND ENDCAPS

4-channel car amplifier • 70W RMS x 4 @ 4 ohm • 100W RMS x 4 @ 2 ohm • 200W RMS x 2 bridged output @ 4 ohm • Gold-plated screw terminals

4-channel car amplifier • 70W RMS x 4 @ 4 ohm • 100W RMS x 4 @ 2 ohm • 200W RMS x 2 bridged output @ 4 ohm • Gold-plated screw terminals

Alpine X-A70F (Damaged Packaging Only New)

700W RMS X-Series Class-D 4-Channel 2 ohm Stable Amplifier

Go to item page Right Arrow Icon of Right Arrow

700W RMS X-Series Class-D 4-Channel 2 ohm Stable Amplifier

• 120 Watts RMS x 4 @ 4 ohm
• 715 Watts RMS x 4 @ 2 ohm
• 350 Watts RMS x 2 @ 4 ohm, Bridged
• 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

• 120 Watts RMS x 4 @ 4 ohm
• 715 Watts RMS x 4 @ 2 ohm
• 350 Watts RMS x 2 @ 4 ohm, Bridged
• 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 MRX-F30 R/B

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

Go to item page Right Arrow Icon of Right Arrow

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 MRP-F300 Open Box

(Open Box) 300W RMS, 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

(Open Box) 300W RMS, 4-Channel Amplifier

V Power Series 4-Channel Class AB Car Amplifier • 50W x 4 chan. @ 4 ohm • 75W x 4 chan. @ 2 ohm • 150W x 4 chan. Max • MOSFET Power supply • Bass EQ 0-12dB at 50Hz • Non-Fading pre-amp output • Thermal management control • 4/3/2 Channel design

V Power Series 4-Channel Class AB Car Amplifier • 50W x 4 chan. @ 4 ohm • 75W x 4 chan. @ 2 ohm • 150W x 4 chan. Max • MOSFET Power supply • Bass EQ 0-12dB at 50Hz • Non-Fading pre-amp output • Thermal management control • 4/3/2 Channel design

Alpine Marine PDX-4.100M R/B

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

Go to item page Right Arrow Icon of Right Arrow

(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-F300 (Open Box, Complete)

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

Go to item page Right Arrow Icon of Right Arrow

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

Alpine KTP-445A-open box

Plug and Play Head Unit Power Pack for Use w/ 2005-Up Alpine Head Units with a Black Power Harness

Go to item page Right Arrow Icon of Right Arrow

Plug and Play Head Unit Power Pack for Use w/ 2005-Up Alpine Head Units with a Black Power Harness

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

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

Alpine PDX-4.150 OB

(OPEN BOX, MISSING ACCESSORIES) 4-Channel Power Density Digital Amplifier

Go to item page Right Arrow Icon of Right Arrow

(OPEN BOX, MISSING ACCESSORIES) 4-Channel Power Density Digital Amplifier

4-Channel Power Density Digital Amplifier • 150W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

4-Channel Power Density Digital Amplifier • 150W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

Alpine PDX-F4 R/B

400W RMS PDX Series 4-Channel Power Density Digital Amplifier

Go to item page Right Arrow Icon of Right Arrow

400W RMS PDX Series 4-Channel Power Density Digital Amplifier

PDX Series 4-Channel Car Amplifier • Class D • 400 Watts RMS • 100 Watts x 4 Chan. RMS • Variable High-Pass and Low-Pass Filter • Blue LED Power/Status Indicator • Compact Size

PDX Series 4-Channel Car Amplifier • Class D • 400 Watts RMS • 100 Watts x 4 Chan. RMS • Variable High-Pass and Low-Pass Filter • Blue LED Power/Status Indicator • Compact Size

Alpine MRX-F30

300W RMS 4-Channel X Power Series Car Amplifier

Go to item page Right Arrow Icon of Right Arrow

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

Items per page: 20 40 60

    Clear all

    Alpine 4-Channel Amplifiers Information

    A 4 channel car amplifier from Alpine will provide your vehicle with the power it requires. These amps can operate four channels and Alpine is a leader in amplification solutions. Power your speakers with a Alpine 4-channel amplifier for a great all around sound.
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    Save up to 10 different vehicles in your garage

    Add vehicle
    Loading...
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon

    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.