Garage
Shop

See all parts that fit your 1984 Ram 50

Rockford Fosgate R250-4

250W RMS 4-Channel PRIME Series Class A/B Car Amplifier

Product videos
highlight-star-icon

Prime Series Full Range Class A/B 4-Channel Car Amplifier • 4 ohm: 40 watts x 4 chan. • 2 ohm: 65 watts x 4 chan. • Bridged, 4 ohm: 125 watts x 2 chan. • MOSFET Power Supply •

Learn more about the r2504

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

r250x4 thumbnail

Rockford Fosgate Prime R250X4

OUR PRICE: $119.95

View item

Loading...
Limited time!
REF407F main

Infinity REF407F (INFSPKRF407FUS)

210W Peak (75W RMS) 4" Reference Series 2-Way Coaxial 3-ohm Speakers

-37.16%

$87.95

List price $139.95

DB402 main

Polk Audio DB402 (DB 402)

270W Peak (90W RMS) 4" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

35
-9.99%

$90.00

List price $99.99

TS-A1081F main

Pioneer TS-A1081F

460W Peak (100W RMS) 4” A Series 2-way 4-ohm Coaxial Car Speakers

3
-18.18%

$90.00

List price $110.00

C1-400x main

JL Audio C1-400x

70W RMS 4" C1 Series 2 Way Coaxial 4-ohm Car Speakers

8
51KSC404 main

Kicker KSC4 (51KSC404)

300W Peak (150W RMS) 4" KS Series 2 Way Coaxial 4-ohm Speakers

3
-16.67%

$99.99

List price $119.99

Limited time!
C2-400X main

JL Audio C2-400x

70W RMS 4" C2 Series 2-Way Coaxial 4-ohm Car Speakers

9
-13.16%

$164.99

List price $189.99

Limited time!
46CSC44 main

Kicker CSC4 (46CSC44)

300W Peak (100W RMS) 4” CS Series 2 Way Coaxial 4-ohm Speakers

38
-29.45%

$59.96

List price $84.99

Limited time!
Club 422F main

JBL Club 422F (SPKCB422FAM)

210W Peak (70W RMS) 4" Club Series 2 Way Coaxial 3-ohm Speakers

-46.14%

$69.99

List price $129.95

P142 main

Rockford Fosgate Punch P1 P142

120W Peak (60W RMS) 4" Punch Series 2 Way Coaxial 4-ohm Speakers

17
Limited time!
40PS44 main

Kicker PS44 (40PS44)

200W Peak (100W RMS) 4" PS Series 2 Way Coaxial 4-ohm Powersports and Motorcycle Speakers

-30.69%

$103.96

List price $149.99

Product Highlights


Prime Series Full Range Class A/B 4-Channel Car Amplifier • 4 ohm: 40 watts x 4 chan. • 2 ohm: 65 watts x 4 chan. • Bridged, 4 ohm: 125 watts x 2 chan. • MOSFET Power Supply •

Description


Rockford Fosgate brand icon

Authorized dealer

Prime Certified Power

There is no better feeling than getting exactly what you paid for. This will always be the case with Rockford Fosgate's R250-4 4-channel amplifier. This CEA-2006 compliant amplifier will give you the rated power output each and every single time, making you feel like your money was well spent. The variable high-pass crossover and variable bass boost will allow for more control of your music to be set at your personal preferences. Rockford Fosgate is well known for making great products and this amplifier is no exception. The heavy duty cast aluminum alloy heatsink will help reduce heat and lower distortion levels or possible thermal overload. This will keep your amplifier running smooth and safely during any listening session. So if you are looking for a reliable, and efficient 4-channel amplifier without breaking the bank, then the R250-4 is the perfect amplifier for you.

  • Prime Series Full Range Class A/B 4-Channel Car Amplifier
  • RMS Power Rating:
    • 4 ohm: 40 watts x 4 chan.
    • 2 ohm: 65 watts x 4 chan.
    • Bridged, 4 ohm: 125 watts x 2 chan.
  • MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +12 dB bass boost at 45 Hz)
  • Punch bass EQ
  • Soft Start Turn-on
  • 4/3/2 Channel operation
  • Heavy duty cast aluminum alloy heatsink for extreme heat dissipation
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Variable high-pass filter (80 Hz fixed)
  • Variable low-pass filter (50-250 Hz, 12 dB/octave)
  • CEA-2006 compliant amplifier
  • Dimensions: 11-2/3"L x 7-7/10"W x 2-4/10"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.
  • 1-year SonicElectronix.com warranty

Product history:

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

Best selling similar products

NDA6004 small

NVX NDA6004

• 100 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(22)

$159.99

List price $215.99

RD400/4 small

JL Audio RD400/4

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

(44)

$304.99

List price $379.99

VADM4v2 small

NVX VADM4 v2 (VADM4v2)

• 80 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(111)

$209.99

List price $239.99

MFA 4.220 small

Deaf Bonce MFA 4.220

• 220 watts x 4 channel @ 4 ohm
• 330 watts x 4 channel @ 2 ohm
• Bridged: 660 watts x 2 channel @ 4 ohm
• Total RMS Power: 1320 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$289.90

List price $289.90

MFA 4.180 small

Deaf Bonce MFA 4.180

• 180 watts x 4 channel @ 4 ohm
• 270 watts x 4 channel @ 2 ohm
• Bridged: 540 watts x 2 channel @ 4 ohm
• Total RMS Power: 1080 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$259.90

List price $259.90

R2-500X4 small

Rockford Fosgate Prime R2 R2-500X4

• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(10)

$359.99

List price $359.99

JD400/4 small

JL Audio JD400/4

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

(34)

$299.99

List price $299.99

VAD10004v2 small

NVX VAD10004 v2 (VAD10004v2)

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

(117)

$279.99

List price $335.99

MVPA4 small

NVX MVPA4

• 100 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(70)

$279.99

List price $383.99

MDX2000.4 2 Ohm small

PRV Audio MDX2000.4 2 Ohm

• 330 watts x 4 channel @ 4 ohm
• 500 watts x 4 channel @ 2 ohm
• Bridged: 1000 watts x 2 channel @ 4 ohm
• Total RMS Power: 2000 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$219.91

List price $274.89

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
40 watts x 4 channel
RMS Power @ 2 ohms
65 watts x 4 channel
RMS Power @ 1 ohm
Not Stable
Bridged RMS Power
125 watts x 2 channel
Amplifier Specifications
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 ohm
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
1.0%
Speaker Level Inputs
No
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
80 Hz Fixed
Low-Pass Crossover Frequency
50 - 250 Hz
Bass Boost
0 - 12 dB
Remote bass/level controller
No
Fuse Rating
25A x 2 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

R250-4

Weight:

5.50lbs

Internal SKU:

r2504

Internal Product ID:

43422

Product and How-to Videos


  • 3Sixty3 Aftermarket Setup Wizard Tutorial
  • How To Install an Amplifier: Car Amplifier Basics Part 2

Customer Ratings & Reviews


Rockford Fosgate R250-4 thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

Sort by:

Loading...

nice amp

surprising clean sound, very satisfied. hooked up to 2 sets of kenwood components. thanks sonic

By cable guy on February 22, 2013

3 found this helpful




T1692 small

Rockford Fosgate Power T1692 Open Box

(Open Box) 2009-2010 Model: 6" x 9" Power Series 2-way Coaxial Speakers

$79.99

List price $229.99

VMC-MD3 small

Sony VMC-MD3 Multi-use Terminal Cable

Multi-use Terminal Cable for Cyber-shot Cameras

$34.99

List price $44.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2003 BMW 745Li

1984 Dodge Ram 50

2000 Toyota Echo

1966 Chrysler Imperial

1995 Volkswagen Golf

2020 GMC Canyon

2017 Toyota Camry

2007 Lexus GX470

1994 Dodge Grand Caravan

1974 Volvo 164

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
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

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.