Alpine 4-Channel Amplifiers at Sonic Electronix
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Alpine 4-Channel Amplifiers

Alpine is a premier manufacturer of 4-channel amplifiers.
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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.

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.
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.
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.
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
The lowest impedance the amplifier will handle when it is not bridged.
The lowest impedance the amplifier will handle when it is bridged.
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 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.
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.

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.

Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
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Alpine BBX-F1200

600W Max (280W RMS) 2-ohm Stable 4 Channel Class-A/B Amplifier

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Alpine BBX-F1200

600W Max (280W RMS) 2-ohm Stable 4 Channel Class-A/B Amplifier

• 50 Watts RMS x 4 @ 4 ohms
• 70 Watts RMS x 4 @ 2 ohms
• 130 Watts RMS x 2 @ 4 ohms
• 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

6
Alpine BBX-F1200

600W Max (280W RMS) 2-ohm Stable 4 Channel Class-A/B Amplifier

In stock

$220.00 (13.66% off)
$189.95
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600W Max (280W RMS) 2-ohm Stable 4 Channel Class-A/B Amplifier

$189.95

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

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NVX Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

$9.99

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NVX XFLOC4

4-Channel Line Output Converter with Digital Noise Filter + Line Driver

$19.99

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Alpine X-A70F

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

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Alpine X-A70F

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

• 120 Watts RMS x 4 @ 4 ohms
• 715 Watts RMS x 4 @ 2 ohms
• 350 Watts RMS x 2 @ 4 ohms, 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

1
Alpine X-A70F

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

OUT OF STOCK

 
$799.95
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X-A70F small

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

$799.95

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NVX XKIT44 4-Gauge 4-Channel Wiring Kit

4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire

$109.99

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

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NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

$23.99

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Alpine KTA-30FW

600W Max (300W RMS) KTA Series 4 ohm Stable 4-Channel Class-D Tough Power Pack Amplifier

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Alpine KTA-30FW

600W Max (300W RMS) KTA Series 4 ohm Stable 4-Channel Class-D Tough Power Pack Amplifier

• 75 Watts RMS x 4 @ 4 ohms
• 75 Watts RMS x 4 @ 2 ohms
• Total Peak Power: 600 Watts
• CEA-2006 Compliant
• Input/Output/Power Harness Included
• IP66 Weatherproof Rating

Alpine KTA-30FW

600W Max (300W RMS) KTA Series 4 ohm Stable 4-Channel Class-D Tough Power Pack Amplifier

Special order

Ships at Later Date

$400.00 (7.51% off)
$369.95
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  • Get A Free $50 Gift Card With Purchase!
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KTA-30FW small

600W Max (300W RMS) KTA Series 4 ohm Stable 4-Channel Class-D Tough Power Pack Amplifier

$369.95

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

Add
NVX Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

$9.99

Add
NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

$23.99

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Alpine KTA-450

4-Channel 200 Watt RMS Power Pack Amplifier

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Alpine KTA-450

4-Channel 200 Watt RMS Power Pack Amplifier

• Class D 4-channels Power Pack Amplifier
• Power Handling: 50W RMS x 4 @ 4ohms/45W RMS x 4 @ 2ohms
• Dynamic Peak Power (DPP)
• Frequency Response: 15-50 Hz
• CTA-2006 compliant

3
Alpine KTA-450

4-Channel 200 Watt RMS Power Pack Amplifier

OUT OF STOCK

$230.00 (13.07% off)
$199.95
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4-Channel 200 Watt RMS Power Pack Amplifier

$199.95

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

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NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

$23.99

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NVX XWS1650 Speaker Wire

50 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

$29.99

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Alpine KTP-445U

Universal Class D 4-Channel Head Unit Power Pack for Use with all Aftermarket & Factory Receivers

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Alpine KTP-445U

Universal Class D 4-Channel Head Unit Power Pack for Use with all Aftermarket & Factory Receivers

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

21
Alpine KTP-445U

Universal Class D 4-Channel Head Unit Power Pack for Use with all Aftermarket & Factory Receivers

OUT OF STOCK

$220.00 (13.66% off)
$189.95
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Universal Class D 4-Channel Head Unit Power Pack for Use with all Aftermarket & Factory Receivers

$189.95

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

Add
NVX Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

$9.99

Add
NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

$23.99

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Alpine S-A32F

S-Series 320W RMS 4-Channel Digital Class D Car Audio Amplifier

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Alpine S-A32F

S-Series 320W RMS 4-Channel Digital Class D Car Audio Amplifier

• 55W RMS x 4 (4ohm, 14.4V ≤ 1% THD+N)
• 80W RMS x 4 (2ohm, 14.4V≤ 1% THD+N)
• 105dB Signal-to-Noise (S/N) ratio
• Designed to perform perfectly with the existing S-Series speakers and subwoofers

Alpine S-A32F

S-Series 320W RMS 4-Channel Digital Class D Car Audio Amplifier

OUT OF STOCK

$280.00 (28.59% off)
$199.95
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S-A32F small

S-Series 320W RMS 4-Channel Digital Class D Car Audio Amplifier

$199.95

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

Add
NVX Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

$9.99

Add
NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

$23.99

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Alpine KTP-445A

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

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Alpine KTP-445A

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

10
Alpine KTP-445A

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

OUT OF STOCK

$200.00 (15.03% off)
$169.95
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KTP-445A small

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

$169.95

Keep Shopping
FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

Add
NVX Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

$9.99

Add
NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

$23.99

Add
Don't see the accessory you're looking for?
View all available accessories for the Alpine KTP-445A.
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Alpine MRV-F300

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

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Alpine MRV-F300

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

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

15
Alpine MRV-F300

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

OUT OF STOCK

$280.00 (35.73% off)
$179.95
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MRV-F300 small

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

$179.95

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Belva BAK84

Complete 8 Gauge Amplifier Wiring Kit with 4-Channel RCA Interconnects

$29.99

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

Add
NVX Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

$9.99

Add
Don't see the accessory you're looking for?
View all available accessories for the Alpine MRV-F300.
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Alpine BBX-F1200 Amplifier + (2-Pairs) Rockford 6.5" Speakers + Amp Kit

600W Max (280W RMS) 2-ohm Stable 4 Channel Class-A/B Amplifier

BBX-F1200, R165SX2, BAK44 main
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Alpine BBX-F1200 Amplifier + (2-Pairs) Rockford 6.5" Speakers + Amp Kit

600W Max (280W RMS) 2-ohm Stable 4 Channel Class-A/B Amplifier

• 50 Watts RMS x 4 @ 4 ohms
• 70 Watts RMS x 4 @ 2 ohms
• 130 Watts RMS x 2 @ 4 ohms
• 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

70
Alpine BBX-F1200 Amplifier + (2-Pairs) Rockford 6.5" Speakers + Amp Kit

600W Max (280W RMS) 2-ohm Stable 4 Channel Class-A/B Amplifier

OUT OF STOCK

$535.95 (28.37% off)
$383.92
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BBX-F1200, R165SX2, BAK44 small

600W Max (280W RMS) 2-ohm Stable 4 Channel Class-A/B Amplifier

$383.92

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18 Butt Connectors, 2 Ring Terminals, and Zip Ties

Great for connecting your car stereo wires to the harness

$8.99

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Alpine MRV-F300 + Free Belva 8 Gauge Amplifier Kit

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

MRV-F300, BAK84 main
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Alpine MRV-F300 + Free Belva 8 Gauge Amplifier Kit

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

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

30
Alpine MRV-F300 + Free Belva 8 Gauge Amplifier Kit

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

OUT OF STOCK

$329.99 (43.10% off)
$187.75
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MRV-F300, BAK84 small

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

$187.75

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

Add
NVX Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

$9.99

Add
NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

$19.99

Add
Don't see the accessory you're looking for?
View all available accessories for the Alpine MRV-F300 + Free Belva 8 Gauge Amplifier Kit.
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Alpine R-A60F

R-Series 4-Channel Power Density Amplifier (600 Watts Total RMS)

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Alpine R-A60F

R-Series 4-Channel Power Density Amplifier (600 Watts Total RMS)

• 100W RMS x 4 @ 4 Ohms
• 150W RMS x 4 @ 2 Ohms
• 300 Watts x 2 @ 4 Ohms Bridged
• Hi-Resolution Audio Compliant
• Increased dynamic range
• Only 46-degrees of phase shift

Alpine R-A60F

R-Series 4-Channel Power Density Amplifier (600 Watts Total RMS)

OUT OF STOCK

$500.00 (0.01% off)
$499.95
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R-A60F small

R-Series 4-Channel Power Density Amplifier (600 Watts Total RMS)

$499.95

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

Add
NVX Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

$9.99

Add
NVX XFLOC4

4-Channel Line Output Converter with Digital Noise Filter + Line Driver

$19.99

Add
Don't see the accessory you're looking for?
View all available accessories for the Alpine R-A60F.
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Alpine BBX-F1200 + (4) Alpine 6x9 Coaxial Speakers + Amp Kit

600W Max (280W RMS) 4-Channel Class-A/B Amplifier + (2 Pairs, 4 total) SPE6090 Speakers

BBX-F1200, SPE6090X2, BAK44 main
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Alpine BBX-F1200 + (4) Alpine 6x9 Coaxial Speakers + Amp Kit

600W Max (280W RMS) 4-Channel Class-A/B Amplifier + (2 Pairs, 4 total) SPE6090 Speakers

• 50 Watts RMS x 4 @ 4 ohms
• 70 Watts RMS x 4 @ 2 ohms
• 130 Watts RMS x 2 @ 4 ohms
• 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

81
Alpine BBX-F1200 + (4) Alpine 6x9 Coaxial Speakers + Amp Kit

600W Max (280W RMS) 4-Channel Class-A/B Amplifier + (2 Pairs, 4 total) SPE6090 Speakers

OUT OF STOCK

$539.99 (35.20% off)
$349.94
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Alpine X-A70F Amplifier + Free High Quality NVX Amp Kit

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

X-A70F, XKIT44 main
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Alpine X-A70F Amplifier + Free High Quality NVX Amp Kit

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

• 120 Watts RMS x 4 @ 4 ohms
• 715 Watts RMS x 4 @ 2 ohms
• 350 Watts RMS x 2 @ 4 ohms, 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

62
Alpine X-A70F Amplifier + Free High Quality NVX Amp Kit

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

OUT OF STOCK

$849.99 (4.71% off)
$809.95
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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.
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