SKU: 56303809008

Rockford Fosgate R2-500X4 - Prime Series 500W 4-Channel Amplifier

Sale price$128.25 Regular price$142.50
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Ships within 48 hours · Estimated delivery Jul 21 - Jul 26

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Description

Rockford Fosgate R2-500X4 - Prime Series 500W 4-Channel AmplifierGive your speakers the power they deserve Rockford Fosgate's Prime Series R2 500X4 amplifier can power four speakers with 75 watts RMS each, so you'll hear your music loud and clear over the noises of the wind and road. You could also use this amp in bridged, 2 channel mode to power a couple of subwoofers with 250 watts RMS each. High and low pass filters help you get maximum performance from the speakers in your vehicle. The Prime Series was

Give your speakers the power they deserve

Rockford Fosgate's Prime Series R2-500X4 amplifier can power four speakers with 75 watts RMS each, so you'll hear your music loud and clear over the noises of the wind and road. You could also use this amp in bridged, 2-channel mode to power a couple of subwoofers with 250 watts RMS each. High- and low-pass filters help you get maximum performance from the speakers in your vehicle.

The Prime Series was developed for car audio fanatics that want a reliable amplifier – with all the power and performance you’ve come to expect from Rockford Fosgate – at an economical price. Rockford Fosgate amplifiers are renowned world-wide for being “underrated,” easily surpassing all specifications, and most importantly, generating more power than their ratings. The latest generation of Prime Series amplifiers are also designed to be easy to setup and configure, making them perfect for use with factory audio or custom aftermarket systems.

  • Balanced Differential Inputs with RCA Pass Through Outputs
  • High Level Input Capable
  • Auto-Sense bypass switch for vehicles with RAP (Retained Accessory Power)
  • Features C.L.E.A.N. Set-up
  • Variable Input Gain adjustment level
  • Top Mounted Control Panel
  • Short Circuit & Over Current Protection
  • CEA-2006 Compliant & CE Compliant
  • Cast aluminum heat sink
  • Full Range Class D
  • Fully Adjustable 12 dB/octave High and Low pass Butterworth Crossovers
  • 1 Year Warranty

R2 Amplifier Product Overview

Rockford Fosgate's R2 amplifiers are the building blocks for great audio systems, powerful enough to even DRIVE our Punch speakers and subwoofers. They have undergone an amazing upgrade by packing them with the latest features at an incredible value. Best of all, they are designed and engineered here in Tempe, Arizona.

TECHNOLOGIES

CEA-2006 Compliant
Power ratings on Rockford Fosgate amplifiers conform to the CEA-2006 industry standards. These guidelines mean your amplifier's output power ratings are REAL POWER numbers, not inflated marketing ratings.

Full Range Class-D
A full-range version of the Class-D topology which is a high-efficiency amplifier design that reduces current consumption from the charging system.

P.O.W.E.R.
Power supply circuit design that allows the amplifier to increase output power as voltage increases.

C.L.E.A.N. Set-Up
C.L.E.A.N. (Calibrated Level Eliminates Audible Noise) is a patented circuit with in/out clip LEDs to help match a source to the amp and optimise output.

Balanced Differential Inputs
Differential inputs eliminate noise picked up by signal cables.

MEHSA 4 (Maximum Efficiency Heat Sink Application)
MEHSA4 reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life span.

NOMAD
NOMAD is a "real-time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances.

CE Compliant
This product fulfills all essential safety and environmental requirements as defined in the European Directives (768/2008 EC).

Rollback Protection
During demanding musical conditions, the amplifier can dynamically reduce demand to prevent stress on the output devices.

Specifications

  • CEA-2006 Power Rating 75W x 4 @ 4Ω ≤1.0% THD+N
  • Number of Channels 4
  • Total Power (Sum of Rated Power) 500 Watts
  • Rated Power (RMS Continuous Power)
    • 75 Watts x 4 @ 4Ω
    • 125 Watts x 4 @ 2Ω
    • 250 Watts x 2 @ 4Ω Bridged/Mono
  • Dynamic Power (PVC/PowerCube®)
    • 90 Watts x 4 @ 4Ω
    • 160 Watts x 4 @ 2Ω
    • 300 Watts x 2 @ 4Ω Bridged/Mono
  • Bridgeable
  • Frequency Response 20 Hz - 20 kHz
  • Input Sensitivity
    • Low-Level: 150 mV - 4 V
    • High-Level: 450 mV - 12 V
  • Circuit Topology Class D
  • Total Harmonic Distortion (THD+Noise)
    • 4Ω: <1.0%
    • 2Ω: <1.0%
  • Signal Input 
    • Front Low-Level: 4 RCA
    • Front High-Level: 4-Pin Molex
    • Rear Low-Level: 4 RCA
    • Rear High-Level: 4-Pin Molex
    • Input Switch: 2/4 Input (works for RCA/hi-level inputs)
  • Signal Output Low-Level: 2 RCA (Pass-Thru active with RCA or Hi-Level input)
  • Crossover Controls: 
    • Front High-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth
    • Front Low-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth
    • Rear High-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth
    • Rear Low-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth
    • All-Pass
  • Visual Indicators
    • Power/Protect
    • C.L.E.A.N. In
    • C.L.E.A.N. Out (front)
    • C.L.E.A.N. Out (rear)
  • Power Wire Gauge 4 AWG
  • Power Input Connector Compression Terminal Block
  • Speaker Wire Gauge 8 AWG
  • Speaker Output Connector Compression Terminal Block
  • Cooling Convection
  • Operating Voltage 9 - 16 VDC
  • Recommended Fuse (not included) 80 A
  • Average Current Draw (13.8V Music)
  • Max. Current Draw (13.8V Sinewave) 59 A
  • Dimensions 1.9" x 6.8" x 10.1" (4.9 cm x 17.3 cm x 25.5 cm)
  • 4 gauge power and ground wiring is recommended for installation.
  • Authorised Internet Dealer
  • 1-year Manufacturer's Warranty

What's in the box:

  • 4-Channel amplifier
  • One 7" Speaker input harnesses
  • 3mm Allen Hex key
  • Four 3/4" Screws
  • 4 Flat washers
  • Installation and Operation Instructions (English/ French/ Spanish/ German/ Italian)
  • Certificate of Performance
  • Rockford Fosgate contact information
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 56303809008

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Mamacita
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Great separator for room.
My kids love it. It separates their half of the room.
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These are PERFECT for my Art Show coming up!
This is going to be PERFECT for my Art Show display. And also....EASY to put up and take down as well as store. I'm so grateful to have found them! They are super light weight. And sturdy for my application. And elegant and have clean lines for my display. I have ivy draped and also fairy lights which make it look classy yet simple! Love them!
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Sami 🛒
Boise, US
★★★★★ 5
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Size: 17inch, Color: Black
I bought these six floating shelves to add some storage and a cohesive look to a few walls around the house. The set has a rustic real wood vibe with an industrial edge, and the black finish keeps things feeling clean and understated. It turned out to be a practical way to create space without committing to a bulky cabinet, and I appreciated having multiple pieces to arrange in different rooms. Installation was straightforward. The package includes 12 brackets, wall anchors and screws, plus clear directions, so I could get them up without much hassle. It takes about eight minutes to mount each shelf, and the hardware feels solid. The shelves can hold around 20 pounds each, which is plenty for everyday items like books, a plant, an alarm clock, or framed photos. In use, the look is exactly what I wanted: sturdy, simple, and able to blend with existing decor across the bedroom, bathroom, kitchen, and living room. The real wood surface and the exposed metal brackets give a cohesive, rustic vibe that elevates plain walls and makes it easy to rotate items in and out. One small note is that the boards are 17 inches long and about an inch thick, so planning spacing and wall space matters a bit. The brackets being visible is part of the look, not a flaw, but it means accurate mounting is important. Overall I am very pleased with the set and it earns a solid five stars.
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Reviewed in the United States on April 17, 2026
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Carolyn Flory
Omaha, US
★★★★★ 5
Great shelves
Size: 17inch, Color: Light Walnut, Size: 17inch, Color: Light Walnut
I love how these look in the nook in my bathroom. I needed 6 inch shelves and this was way easier than ripping 8 inch from the hardware store
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Reviewed in the United States on March 30, 2026
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Cynthia perez
Waukegan, US
★★★★★ 5
Great
Size: 36inch, Color: Light Walnut, Size: 36inch, Color: Light Walnut
Got the job done very light weight but durable great condition installation was super easy
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Reviewed in the United States on April 29, 2026

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