Rockford Fosgate Class-D Amplifiers at Sonic Electronix

Rockford Fosgate Class-D 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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Rockford Fosgate R2-500X1

Prime Series 500 Watt MonoBlock Amplifier

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Prime Series 500 Watt MonoBlock Amplifier

• 300 Watts RMS x 1 @ 4 ohms
• 500 Watts RMS x 1 @ 2 ohms
• CEA-2006 Compliant
• Top Mounted Control Panel
• Class-D Amplifier

1
Rockford Fosgate R2-500X1

Prime Series 500 Watt MonoBlock Amplifier

In stock

$299.99 (20.00% off)
$239.99
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Prime Series 500 Watt MonoBlock Amplifier

$239.99

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Belva BAK42BK 4 Gauge Amplifier Installation Kit

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$29.99

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Rockford Fosgate R2-750X1

Rockford Fosgate Prime 750 Watt MonoBlock Amplifier

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Rockford Fosgate Prime 750 Watt MonoBlock Amplifier

• 250 Watts RMS x 1 @ 4 ohms
• 500 Watts RMS x 1 @ 2 ohms
• 750 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 500 Watts
• CEA-2006 Compliant • Rollback Protection

Rockford Fosgate R2-750X1

Rockford Fosgate Prime 750 Watt MonoBlock Amplifier

In stock

 
$299.99
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Rockford Fosgate Prime 750 Watt MonoBlock Amplifier

$299.99

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Belva BAK42BK 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

$29.99

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FREE NVX XMountPro Cell Phone Mount with Select Orders

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NVX XLCA2

2 Channel Line Out Converter with xBOOST & 3-year warranty*!

$89.99

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Rockford Fosgate R2-750X5

Rockford Fosgate Prime 600W 5-Channel Full Range Amplifier

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Rockford Fosgate Prime 600W 5-Channel Full Range Amplifier

• 50 Watts RMS x 4 @ 4 ohms
• 100 Watts RMS x 4 @ 2 ohms
• Total Peak Power: 600 Watts
• CEA-2006 Compliant
• Balanced Differential Inputs with RCA Pass Through Outputs
• Variable Infrasonic Filter
• ull Range Class D

Rockford Fosgate R2-750X5

Rockford Fosgate Prime 600W 5-Channel Full Range Amplifier

In stock

 
$419.99
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Rockford Fosgate Prime 600W 5-Channel Full Range Amplifier

$419.99

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Rockford Fosgate RFK8 Wiring Kit

Get a matching Fosgate wiring kit for your new Fosgate amplifier! Don't forget the RCA's!

$79.99

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NVX XIV65 V-Series Interconnect Cable

5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable

$34.99

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Rockford Fosgate Prime R500X1D

Rockford Fosgate R500X1D 1-Channel Car Prime 500 Watt RMS Amplifier Car Mono Amp

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Rockford Fosgate R500X1D 1-Channel Car Prime 500 Watt RMS Amplifier Car Mono Amp

• RMS: 300W x 1 @ 4 ohms, 500W x 1 @ 2 ohms
• Total RMS Power: 500W
• CEA-2006 Compliant
• Remote PLC (Punch Level Control) Included
• Efficient Class-D circuit topology
• Dimensions: 8-1/2"L x 6-3/4"W x 2"H

310
Rockford Fosgate Prime R500X1D

Rockford Fosgate R500X1D 1-Channel Car Prime 500 Watt RMS Amplifier Car Mono Amp

In stock

$299.99 (30.00% off)
$209.99
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Rockford Fosgate R500X1D 1-Channel Car Prime 500 Watt RMS Amplifier Car Mono Amp

$209.99

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Belva BAK42BK 4 Gauge Amplifier Installation Kit

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NVX XLCA2

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$89.99

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Rockford Fosgate Prime R1200-1D

1200W RMS Prime Series Class-D Monoblock 1-Ohm Stable Amplifier

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1200W RMS Prime Series Class-D Monoblock 1-Ohm Stable Amplifier

• RMS: 400W x 1 @ 4 ohms, 800W x 1 @ 2 ohms, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• Tuned Bass EQ: 0 to +18 dB
• Class D Circuitry
• Dimensions: 6-3/4"L x 11-1/16"W x 2"H

728
Rockford Fosgate Prime R1200-1D

1200W RMS Prime Series Class-D Monoblock 1-Ohm Stable Amplifier

In stock

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$319.99

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1200W RMS Prime Series Class-D Monoblock 1-Ohm Stable Amplifier

$319.99

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Belva BAK42BK 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

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NVX XFLOC2

80W 2-Channel Line Output Converter with Digital Noise Filter + Line Driver

$16.99

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Rockford Fosgate R2-300X4

Rockford Fosgate 300W 4-Channel Class D Amplifier

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Rockford Fosgate 300W 4-Channel Class D Amplifier

• 50 Watts RMS x 4 @ 4 ohms
• 75 Watts RMS x 4 @ 2 ohms
• Total Peak Power: 150 Watts
• CEA-2006 Compliant
•Variable On Board Punch EQ
1.9" x "6.8" x "10.1"

Rockford Fosgate R2-300X4

Rockford Fosgate 300W 4-Channel Class D Amplifier

In stock

 
$239.99
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Rockford Fosgate 300W 4-Channel Class D Amplifier

$239.99

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Rockford Fosgate RFK8 Wiring Kit

Get a matching Fosgate wiring kit for your new Fosgate amplifier! Don't forget the RCA's!

$79.99

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FREE NVX XMountPro Cell Phone Mount with Select Orders

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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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Rockford Fosgate Prime R750-1D

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

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

• RMS: 250W x 1 @ 4 ohms, 500W x 1 @ 2 ohms, 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

23
Rockford Fosgate Prime R750-1D

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

In stock

 
$269.99

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

$269.99

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Belva BAK42BK 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

$29.99

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FREE NVX XMountPro Cell Phone Mount with Select Orders

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$14.99

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NVX XFLOC2

80W 2-Channel Line Output Converter with Digital Noise Filter + Line Driver

$16.99

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Rockford Fosgate PBR400X4D

400W 4 Channel Punch Series Class D Amplifier

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400W 4 Channel Punch Series Class D Amplifier

• 50 Watts RMS x 4 @ 4 ohms
• 100 Watts RMS x 4 @ 2 ohms
• Total Peak Power: 400 Watts
• CEA-2006 Compliant
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Compact design for stealth installations
• 4.25"W x 1.53"H x 6.75"D

Rockford Fosgate PBR400X4D

400W 4 Channel Punch Series Class D Amplifier

In stock

$249.99 (4.00% off)
$239.99
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400W 4 Channel Punch Series Class D Amplifier

$239.99

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Rockford Fosgate RFK8 Wiring Kit

Get a matching Fosgate wiring kit for your new Fosgate amplifier! Don't forget the RCA's!

$79.99

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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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Rockford Fosgate R500-1D

500W RMS PRIME Series Monoblock Amplifier

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500W RMS PRIME Series Monoblock Amplifier

PRIME Series Single-Channel Monoblock Class D Car Amplifier • 250W x 1 Chan. @ 4 Ohms • 500W x 1 Chan. @ 2 Ohms • Tuned Bass EQ • Variable Low-Pass Filter • Extruded Aluminum Heatsink

10
Rockford Fosgate R500-1D

500W RMS PRIME Series Monoblock Amplifier

In stock

$299.99 (26.67% off)
$219.99

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500W RMS PRIME Series Monoblock Amplifier

$219.99

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Belva BAK42BK 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

$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

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NVX XFLOC2

80W 2-Channel Line Output Converter with Digital Noise Filter + Line Driver

$16.99

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Rockford Fosgate R2-250X1

Prime Series 250 Watt MonoBlock Amplifier

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Prime Series 250 Watt MonoBlock Amplifier

• 150 Watts RMS x 1 @ 4 ohms
• 250 Watts RMS x 1 @ 2 ohms
• Total Peak Power: 250 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• Sub Infrasonic Filter: 15 Hz - 40 Hz

Rockford Fosgate R2-250X1

Prime Series 250 Watt MonoBlock Amplifier

In stock

 
$199.99
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  • 50% Off a 4 Gauge Installation Kit with Purchase!

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Prime Series 250 Watt MonoBlock Amplifier

$199.99

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Belva 1.0 Farad Capacitor + Amp Kit

BB1D 1.0 Farad Capacitor + BAK42BK Complete 4 Gauge Amplifier Wiring Kit

$54.99

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NVX XLCA2

2 Channel Line Out Converter with xBOOST & 3-year warranty*!

$89.99

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Rockford Fosgate R2-200X2

200W 2-Channel Amplifier

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200W 2-Channel Amplifier

• 50 Watts RMS x 2 @ 4 ohms
• 100 Watts RMS x 2 @ 2 ohms
• 200 Watts RMS x 1 Bridged @ 4 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• On Board Punch EQ

Rockford Fosgate R2-200X2

200W 2-Channel Amplifier

In stock

 
$189.99
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R2-200X2 small

200W 2-Channel Amplifier

$189.99

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Belva BAK82

Complete 8 Gauge Amplifier Wiring Kit with 2-Channel RCA Interconnects

$29.99

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FREE NVX XMountPro Cell Phone Mount with Select Orders

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$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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Rockford Fosgate Prime R2-1200X1 + Free Belva Amp Kit

Rockford Fosgate 1200W Monoblock Amplifier

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Rockford Fosgate 1200W Monoblock Amplifier

• 400 Watts RMS x 1 @ 4 ohms
• 800 Watts RMS x 1 @ 2 ohms
• 1200 Watts RMS x 1 @ 1 ohm
• CEA-2006 Compliant
• R.L.C. Remote Level Control

34
Rockford Fosgate Prime R2-1200X1 + Free Belva Amp Kit

Rockford Fosgate 1200W Monoblock Amplifier

In stock

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$349.99
Rockford Fosgate R250-1D

250W RMS Monoblock Class D PRIME Series Car Amplifier

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250W RMS Monoblock Class D PRIME Series Car Amplifier

Monoblock Class D PRIME Series Car Amplifier • 4 ohms: 150 watts x 1 chan. • 2 ohms: 250 watts x 1 chan. • Pulse Width Modulated MOSFET Power Supply • Preamp RCA Output to Daisy Chain Multiple Amps

4
Rockford Fosgate R250-1D

250W RMS Monoblock Class D PRIME Series Car Amplifier

In stock

 
$179.99

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R250-1D small

250W RMS Monoblock Class D PRIME Series Car Amplifier

$179.99

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Belva BAK82

Complete 8 Gauge Amplifier Wiring Kit with 2-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

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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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Rockford Fosgate Prime R2-1200X1 + Premium NVX Amp Kit

Rockford Fosgate 1200W Monoblock Amplifier + NVX XKIT42

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Rockford Fosgate 1200W Monoblock Amplifier + NVX XKIT42

• 400 Watts RMS x 1 @ 4 ohms
• 800 Watts RMS x 1 @ 2 ohms
• 1200 Watts RMS x 1 @ 1 ohm
• CEA-2006 Compliant
• R.L.C. Remote Level Control

82
Rockford Fosgate Prime R2-1200X1 + Premium NVX Amp Kit

Rockford Fosgate 1200W Monoblock Amplifier + NVX XKIT42

In stock

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$399.98
Rockford Fosgate Prime R2-1200X1

Rockford Fosgate 1200W Monoblock Amplifier

R2-1200X1 main
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Rockford Fosgate 1200W Monoblock Amplifier

• 400 Watts RMS x 1 @ 4 ohms
• 800 Watts RMS x 1 @ 2 ohms
• 1200 Watts RMS x 1 @ 1 ohm
• CEA-2006 Compliant
• R.L.C. Remote Level Control

4
Rockford Fosgate Prime R2-1200X1

Rockford Fosgate 1200W Monoblock Amplifier

In stock

Only 2 Left!

 
$349.99
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Rockford Fosgate 1200W Monoblock Amplifier

$349.99

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Belva BAK42BK 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

$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

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NVX XLCA2

2 Channel Line Out Converter with xBOOST & 3-year warranty*!

$89.99

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Rockford Fosgate Prime R2-500X4

Rockford Prime 500W 4-Channel Full Range Class D Amplifier

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Rockford Prime 500W 4-Channel Full Range Class D Amplifier

• 75 Watts RMS x 4 @ 4 ohms
• 125 Watts RMS x 4 @ 2 ohms
• Total Peak Power: 500 Watts
• CEA-2006 Compliant
• Top Mounted Control Panel
1.9" x "6.8" x "10.1"

Rockford Fosgate Prime R2-500X4

Rockford Prime 500W 4-Channel Full Range Class D Amplifier

OUT OF STOCK

 
$279.99

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R2-500X4 small

Rockford Prime 500W 4-Channel Full Range Class D Amplifier

$279.99

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Rockford Fosgate RFK8 Wiring Kit

Get a matching Fosgate wiring kit for your new Fosgate amplifier! Don't forget the RCA's!

$79.99

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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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Rockford Fosgate Prime R500X1D

500W RMS Prime Series Class D Monoblock Amplifier (Open Box Complete)

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500W RMS Prime Series Class D Monoblock Amplifier (Open Box Complete)

• RMS: 300W x 1 @ 4 ohms, 500W x 1 @ 2 ohms
• Total RMS Power: 500W
• CEA-2006 Compliant
• Remote PLC (Punch Level Control) Included
• Efficient Class-D circuit topology
• Dimensions: 8-1/2"L x 6-3/4"W x 2"H

1
Rockford Fosgate Prime R500X1D

500W RMS Prime Series Class D Monoblock Amplifier (Open Box Complete)

DISCONTINUED

 

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500W RMS Prime Series Class D Monoblock Amplifier (Open Box Complete)

$129.24

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Belva BAK42BK 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

$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

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NVX XLCA2

2 Channel Line Out Converter with xBOOST & 3-year warranty*!

$89.99

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Car audio capacitors are a great addition to any aftermarket audio system that is in need of a little extra power. We have caps from 1.0 farad up to 100 farad!

Rockford Fosgate EQs, Signal & Sound Processors Rockford Fosgate EQs, Signal & Sound Processors

Find a quality line output converter, digital sound processor, EQ, crossover or bass enhancer in here.

Rockford Fosgate Marine Amplifiers Rockford Fosgate Marine Amplifiers

Enhance the sound on your boat by adding an amplifier to your marine audio system. These marine amps are the perfect way to get louder, bigger, and clearer sound quality on your boat. These marine amplifiers can be great for standard boat speakers, tower speakers, and even some marine PA systems. Each amp is specially treated and engineered to function in the same wet, salty environment that boats are in.

Rockford Fosgate Motorcycle Amplifiers Rockford Fosgate Motorcycle Amplifiers

Your motorcycle will sound better than ever with the proper amplifier. Most of these amps are specially designed with special materials that can withstand the vibrations and elemental exposure, while others are designed with an extremely small footprint to fit conveniently in a saddlebag or other tight installations. Many of the products in this category are specifically designed for certain motorcycles, making installation a breeze.

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