Garage
Shop

Rockford Fosgate Prime R250X4

250W RMS 4-Channel Class AB Prime Series Full Range Amplifier

Product videos
highlight-star-icon

• 40W x 4-Chan. @ 4 ohms
• 60W x 4-Chan. @ 2 ohms
• 125W x 2 Chan. @ 4 ohms Bridged
• Variable Bass Boost
• Variable High-Pass Crossover
• CEA-2006 Compliant
• Soft Start Turn-On

Learn more about the r250x4

We apologize

This item has been discontinued

Product Highlights


• 40W x 4-Chan. @ 4 ohms
• 60W x 4-Chan. @ 2 ohms
• 125W x 2 Chan. @ 4 ohms Bridged
• Variable Bass Boost
• Variable High-Pass Crossover
• CEA-2006 Compliant
• Soft Start Turn-On

Description


Rockford Fosgate brand icon

Authorized dealer



The PRIME Choice

The Prime R250X4 is a 4-Channel amplifier perfect for any Car Audio Fanatic getting into mobile audio wanting a single amplifier to run a complete audio system. This amplifier features selectable Punch Bass to tune low frequencies, variable crossovers to either protect your high frequency speakers or feeding only bass to your subwoofers, and Pass-Thru jacks for daisy-chaining another amplifier.

Class-AB

An amplifier topology with the best of both worlds; a Class A preamp and Class B output stage. Class A topologies area great for sound quality but can require alot of current. Class B designs are great for power delivery. Amplifier designs utilizing a Class A/B topology reaps the benefit of great sound quality in the front-end (preamplifier stage) while delivering great power in the output stages (MOSFET drivers).

General Features

  • Prime Series Full Range Class AB 4-Channel Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 40 watts x 4 chan.
    • 2 ohms: 60 watts x 4 chan.
    • Bridged, 4 ohms: 125 watts x 2 chan.
  • CEA-2006 compliant amplifier
  • MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +12 dB bass boost at 45 Hz)
  • Soft Start Turn-on
  • 4/2 channel switch
  • 50 Amp In-line fuse is highly recommended
  • Heavy duty cast aluminum alloy heatsink for extreme heat dissipation
  • Variable high-pass filter (50-250 Hz, Butterworth 12 dB/octave)
  • Variable low-pass filter (50-250 Hz, Butterworth 12 dB/octave)
  • Dimensions: 11-1/4"L x 6-3/4"W x 2"H
  • 8-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product history:

Rockford Fosgate R250X4 thumbnail
(newest, current model)
Rockford Fosgate R250-4 thumbnail
(previous model, replaced by Rockford Fosgate Prime R250X4)

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
40 watts x 4 channel
RMS Power @ 2 ohms
60 watts x 4 channel
Bridged RMS Power
125 watts x 2 channel
Amplifier Specifications
Series
Prime Series
Amplifier Class
A/B
Number of Channels
4-Channel
Total RMS Power Output
250 watts
Maximum Input Gauge Size
8 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
1.0%
Speaker Level Inputs
Yes
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
50 - 250 Hz
Low-Pass Crossover Frequency
50 - 250 Hz
Signal-to-Noise Ratio
100 dB
Channel Separation
50 dB
Bass Boost
Selectable 0/+6dB/+12dB
Remote bass/level controller
Optional (Accessory required and sold separately)
Strappable
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

R250X4

Weight:

6.50lbs

Internal SKU:

r250x4

Internal Product ID:

67752

Product and How-to Videos


  • 3Sixty3 Aftermarket Setup Wizard Tutorial
  • Rockford Fosgate Prime Series Amplifiers
  • How To Install an Amplifier: Car Amplifier Basics Part 2

Customer Ratings & Reviews



5 star
67%
4 star
22%
3 star
11%
2 star
0%
1 star
0%



Durability
5
Value
4.9
Features
4.8
Design
5
Usability
5

Customer Reviews

Sort by:

Loading...

Great Buy

My son simply loves Rockford Fosgate products this is the only site he will buy from . Thank you so very much for carring this line of Products

By Debbi on August 8, 2014

23

found this helpful.

Great Amp

this is the 2nd Rockford Fosgate amp I have purchased from Sonic, and I couldn't be more pleased. It's a small amp, but delivers big sound. When connected to my Kenwood head unit, it rocks! Not only will it blast my truck, at more normal volumes, it makes the music sound so much fuller. Rcokford Fosgate tests all their amps before they ship, so even though its rated at 250 amps, mine tested at 336 amps, wow. easy hook up ans small package to hide in Reg cab truck. I would definitely recommend

By JetAMT on October 19, 2014

20

found this helpful.

Great four channel amp !

I installed this amp for a friend's mom . In a Toyota suv . I upgraded the factory jbl door speakers I wanted an amp with enough power to push four 100 rms speakers . This Rockford amp didn't disappoint . Like most Rockford amps it is underrated my birth sheet said 270 watts as tested . Bottom line is plenty of power good separation from front to rear . This is a good mids and highs amp . I high recommend .

By Big John on January 9, 2014

23

found this helpful.

Great amp

This amp is great. It pushes my kicker 6x9s and Polk 6 1/2 perfect. Cristel clear sound worth the money. Been running this amp for a month now can't say anything bad about it. Love shopping with sonic great products and prices.

By Nathan on March 23, 2015

11

found this helpful.

Very reliable

I’ve own this for a few months already and still working great on my single cab truck highly recommend

By Anonymous on April 24, 2019 Checkmark Icon Verified purchase

1

found this helpful.

Great value

Very pleased with my purchase and with the speedy shipping over all a great place to buy from

By Anonymous on August 5, 2018

1

found this helpful.

Can You Cook On This Thing?

First, I'll say this puts out great power. But, it gets HOT! I had it powered fully at 4 ohms and when I went to touch it I actually backed my hand off of it. I'm scared to actually take it down to 2 ohms because of how hot it gets now. Anyway, same quality you get from any Rockford Fosgate amp, just that one little hiccup. Just make sure its in a very well ventilated area, and you'll be okay. When I have the windows down and air flowing right to it, it doesn't get as hot as when I'm just driving around with the windows up and no AC on. With that heat though, it puts out some weird noises through the speakers. It doesn't do it before it gets heated up, but once it gets hot, sound quality goes down quite a bit. With that said, its still in tact very well and hasn't smoked at all. I have smelt it getting hot, but never actually seen any differences in it. It has been holding up very well for how hot it gets, and I drive long distances constantly.

By Zachary on November 20, 2015 Checkmark Icon Verified purchase

2

found this helpful.

Great amp, get hot

Plenty of power in my application (96 Vette) but gets hella hot.

By Jeff in Hades on July 2, 2016

Great little amp.

Great little amp for the price. Fits snug under my passenger seat and since the chassis is so small you dont notice it from the backseat. This amp has never shutoff nor had any issues. Tuned with a dd-1, the sound is crisp and clean at all levels. Also, the certificate says it was rated at 333w. So i paid for a 250w and got 333w. You can't beat it! Id recommend this entry series amp to anyone wanting to upgrade from stock. - Alex

By Alex on October 16, 2015 Checkmark Icon Verified purchase

1

found this helpful.

Add-ons


Similar Products

Best selling similar products

JL Audio XD400/4v2

• 75 watts x 4 channel @ 4 ohms
• 100 watts x 4 channel @ 2 ohms
• Bridged: 200 watts x 2 channel @ 4 ohms
• Total RMS Power: 400 watts
• Class D 2 ohms Stable 4-Channel Amplifier

(9)

$349.99

NVX VAD10004

• 150 watts x 4 channel @ 4 ohms
• 250 watts x 4 channel @ 2 ohms
• Bridged: 500 watts x 2 channel @ 4 ohms
• Total RMS Power: 1000 watts
• CEA-2006 Compliant
• Class D 2 ohms Stable 4-Channel-Channel Amplifier

(14)

$279.99

NVX VADM4

• 400 Watt True RMS Output!
• Marine Certified 4-Channel Micro Class D Amplifier
• 75W x 4-Chan. @ 4 ohms
• 100W x 4-Chan. @ 2 ohms
• 3-Way System Protection
• 4/2 Channel Operation
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint!

(31)

$189.99

Rockford Fosgate PBR400X4D

• 50 watts x 4 channel @ 4 ohms
• 100 watts x 4 channel @ 2 ohms
• Bridged: 200 watts x 2 channel @ 4 ohms
• Total RMS Power: 400 watts
• Class D 2 ohms Stable 4-Channel Amplifier

$279.99

Taramps DS 1200X4

• 192 watts x 4 channel @ 4 ohms
• 300 watts x 4 channel @ 2 ohms
• Bridged: 600 watts x 2 channel @ 4 ohms
• Total RMS Power: 1200 watts
• Class D 2 ohms Stable 4-Channel-Channel Amplifier

$204.99

Related Searches


R250X4 small

Item added to your cart.

Price: $119.95

Essential add-ons
Belva BAK84

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

$59.99

$34.99

Add to cart
Belva BPK8

8 Gauge Premium (CCA) Copper Clad Aluminum Amplifier Power Wiring Kit with Speaker Wire

$39.99

$19.99

Add to cart
Stinger SK4281

8 Gauge Power Amplifier Installation Kit

$69.00

$33.99

Add to cart
StreetWires ZN1K-08

8 Gauge Amplifier Power Installation Kit

$43.95

$39.95

Add to cart
Stinger SK6281

8 Gauge Power Amplifier Installation Kit

$83.00

$42.99

Add to cart
Universal Remote Bass Level Control Knob

Flush Mount & Universal via RCA. Works with any amp, controls your bass output

$14.99

$7.99

Add to cart
NVX XMICROLOC4

Add a 4-channel amplifier without replacing your factory radio

$31.24

$24.99

Add to cart
NVX XFLOC4

Add a 4-channel amplifier without replacing your factory radio

$23.74

$18.99

Add to cart
NVX XIX45 X-Series RCA Interconnect Cable

16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology

$44.99

$20.99

Add to cart
NVX V-Series RCA Interconnect Cable

19 ft. of 4-Channel RCA cable with dual twisted-pair conductors

$32.99

$15.99

Add to cart
80 Amp Smart Relay Isolator (XSBI80)

Smart isolator - Monitors and auto-charging feature!

$49.99

$24.99

Add to cart
80 Amp Relay Isolator (BIR80)

Great for isolating a second batter making it dedicated to the stereo system

$19.99

$14.99

Add to cart
200 Amp Smart Relay Isolator (XSBI200)

Smart isolator - Monitors and auto-charging feature!

$79.99

$54.99

Add to cart
500 Amp Smart Relay Isolator (XSBI500)

Smart isolator - Monitors and auto-charging feature!

$99.99

$74.99

Add to cart
500 Amp Relay Isolator (BIR500)

Does not create a voltage drop to the second battery like conventional isolators

$89.99

$65.99

Add to cart
NVX XCAP1F

True 1.0 Farad 20V Capacitor with Digital Read-out, Built-in Distribution Block

$124.99

$89.99

Add to cart
Belva BB1D

1.0 Farad Capacitor with Digital Red Display for up to 1000W Max

$79.99

$34.95

Add to cart
Belva Nine Function Digital Multimeter

Perfect for any installation and troubleshooting

$29.99

$9.99

Add to cart
Six Function Digital Multimeter

Perfect for every toolbox

$14.99

$6.99

Add to cart
Steve Meade Designs IM-SG

Impedance Meter / Signal Generator

$461.99

$451.99

Add to cart
SMD DD-1 Distortion Detector

Set your gains like a Pro, accurately and quickly

$207.99

$199.99

Add to cart
SMD CC-1 Crossover Calibrator

This is a must have! Set your crossover frequency like a Pro

$195.99

$192.99

Add to cart
World's Smallest AFS / Mini ANL Fuse Holder

Accepts 4 gauge or 8-gauge wire

$19.99

$10.99

Add to cart
4/8 Gauge Mini ANL (MANL, AFS) Fuse Holder

4/8 Gauge Mini ANL (MANL, AFS) Fuse Holder

$9.99

$6.99

Add to cart
High Quality Element Resistant AGU Fuse Holder

Belva BAGUH2 AGU Fuse Holder

$9.99

$4.99

Add to cart
4/8 Gauge AGU Fuse Holder

4/8 Gauge AGU Fuse Holder

$9.99

$6.99

Add to cart
Modular Linkable ANL Fuse Block

Modular Linkable ANL Fuse Block

$59.99

$16.99

Add to cart
4/8 Gauge Mini-ANL/MANL/AFS Fuse Holder

4/8 Gauge Mini-ANL/MANL/AFS Fuse Holder

$9.99

$8.99

Add to cart
4 Pack of 80 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 80A Nickel Plated Fuses

$8.99

$3.99

Add to cart
4 Pack of 100 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 100A Nickel Plated Fuses

$8.99

$3.99

Add to cart
2 Pack of 100 Amp Nickel-Plated ANL Fuse

ANL 100A Nickel plated for better power transfer

$7.99

$3.99

Add to cart
2 Pack of 200 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 200 Amp ANL Fuses

$7.99

$3.99

Add to cart
2 Pack of 300 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 300 Amp ANL Fuses

$7.99

$3.99

Add to cart
Pair of 8 Gauge Spade Terminals, #8 Opening

Spade Terminals • 8 Gauge • 1 Red & 1 Black • Nickel Plated

$9.99

$2.49

Add to cart
8 Gauge Ring Terminals, 5/16" Opening

Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

$7.99

$2.99

Add to cart
NVX VUBT2

Universal Bluetooth Audio Receiver

$49.99

$39.99

Add to cart
Marine Grade Bluetooth Audio Controller/Receiver

Marine Grade Bluetooth Audio Controller/Receiver

$62.49

$48.99

Add to cart
NVX XUBT3

Universal Bluetooth Audio Receiver & Volume/Playback Controller Knob

$99.99

$59.99

Add to cart
Save up to 10 different vehicles in your garage

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