SKU: 56303809008

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

Sale price$128.25 Regular price$142.50
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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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Stef
Dallas, US
★★★★★ 5
Shark dog approved
Size: Large, Color: Broccoli, Size: Large, Color: Broccoli
My new baby shark.... I mean puppy really enjoys chewing. I can't just give her a ton of pig ears or bully sticks all day, which she would definitely love, so I'm constantly looking for well made chew toys. I'd put this right up with Kong. Very durable and nice. I also love the different textures, she seems to also love it. She can gnaw at the top and chew on the stem. She wanted it as soon as I opened it - it does smell like bacon but I haven't taken a chomp at it to be able to write a complete review! My dog is about 23 lbs but I can see a 80 lb dog chew this, it's not small.
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Reviewed in the United States on October 8, 2025
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Nunya B
Los Angeles, US
★★★★★ 4
So cute
Size: Large, Color: Pumpkin
My French Bulldogs have really strong jaws and are aggressive chewers. These really are sturdy and last a good amount of time. They are a bit heavy and awkward for my dogs to hold onto but they do like them.
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Reviewed in the United States on April 25, 2026
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Brandy REVIEWS
Port Orchard, US
★★★★★ 5
Cute toy and super tough!
Size: Small, Color: Lobster
My small dog is a serious chewer, and this lobster toy has been holding up great. Usually, he destroys toys within a day, but this one’s still going strong after a couple of weeks. The shape is perfect — easy for him to grab and chew, and the little claws keep him entertained. The filet mignon flavor must be good because he goes right for it every time. It’s sturdy without being too hard on his teeth, and it doesn’t leave any mess or pieces behind. If you’ve got a small but mighty chewer, this one’s definitely worth it. Cute design, lasts forever, and keeps my pup busy — total win. 🦞🐾
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Reviewed in the United States on October 26, 2025
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SS
Pawtucket, US
★★★★★ 5
Excellent toy
Size: X-Large, Color: Lobster
Very durable. Dog who has destroyed every toy ever purchased loves this and it is still in great condition.
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Reviewed in the United States on April 21, 2026
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Honorific Tails
Grantham, US
★★★★★ 3
Cheese the Day with Nylabone's Power Chew Cheese Chew Toy!
Size: X-Large, Color: Cheese
As a devoted dog parent, I've always believed that our furry friends deserve the best, especially when it comes to their favorite pastime—chewing! Nylabone's Power Chew Cheese Chew Toy is a game-changer that's added an extra layer of excitement to our dog's chewing routine. **Chew-Tastic Design:** First things first, the cheese-inspired shape of this chew toy is a hit in our household. Our dog can't resist its quirky design, and it's become a beloved addition to his chew toy collection. It's like a fun surprise every time he reaches for it! **Flavor Pockets for Fun:** What truly sets this chew toy apart is its flavor pockets. We fill them with spreadable treats, turning regular chew time into an epic adventure. Our dog absolutely loves the challenge of getting every last bit of treat, and it keeps him engaged for hours. **Dental Health Bonus:** Beyond the fun factor, the unique textures on this toy serve a dual purpose. Not only do they provide extra sensory enjoyment for our pup, but they also help clean his teeth as he chews. It's a win-win for both entertainment and dental health. **Built to Last:** Now, let's talk durability. Our dog is a power chewer, and this toy has proven to be up to the challenge. Made from Nylabone's most robust material, it's stood the test of time, promoting healthy chewing habits and saving our furniture from destruction. **Satisfaction All Around:** This chew toy isn't just for our dog's enjoyment; it brings joy to our family too. Seeing our furry friend so engaged and happy is priceless. It satisfies his natural urge to chew while teaching him healthy chewing habits. **A Flavorful Experience:** Did I mention the cheese flavor? It runs throughout the toy, adding another layer of enjoyment for our pup. It's like a delicious treat that never ends! **Perfect for Big Dogs:** As the proud parent of an extra-large dog, we opted for the "Souper" size, designed for dogs over 50 pounds. It's the perfect size for our gentle giant. In conclusion, Nylabone's Power Chew Cheese Chew Toy has become an integral part of our dog's life. It's more than just a chew toy; it's an adventure, a dental health solution, and hours of entertainment all rolled into one. We've embraced the mantra of "Cheese the Day" with this fantastic chew toy, and we wholeheartedly recommend it to fellow dog parents looking to add more joy and flair to their furry friend's life!
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Reviewed in the United States on October 27, 2023

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