R250X4 250 Watt 4-Channel Amplifier

The Prime R250X4 is a 250 watt 4-channel amplifier capable of running 2-Ohms stereo on all channels and 4-Ohms bridged/mono on the rear channels. Includes on-board Punch Bass and front/rear crossover controls.

  • 12dB/octave Butterworth crossover
  • 0/6/12 dB On Board Punch EQ Control
  • 2/4 channel input switch
  • High Level Input (4-pin)
  • Separate Front and Rear Gain Control
  • Real time output and power supply thermal sensing
  • Cast aluminum heatsink
  • 4 Gauge power/ground connectors
  • MOSFET power supply
  • Over current protection
  • Short circuit protection
  • Muted turn on
  • 1 Year Standard Warranty warranty info
Class-AB

R250X4

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.


CEA-2006 Compliant

CEA-2006 Compliant

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These...
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CE Compliant

CE Compliant

This product fulfills all essential safety and environmental requirements as defined in the...
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Class-AB

Class-AB

An amplifier topology with the best of both worlds; a Class A preamp and Class B output stage.
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CEA-2006 Compliant: CEA-2006 Guidelines
Number of Channels: 4
Rated Power
(RMS Continuous Power):
40 Watts x 4 @ 4-Ohms
60 Watts x 4 @ 2-Ohms
125 Watts x 2 @ 4-Ohms Bridged
Total Power
(Sum of Rated Power):
250 Watts RMS
Dynamic Power
(PVC/PowerCube® Measurement):
54 Watts x 4 @ 4-Ohms 0° Res
82 Watts x 4 @ 2-Ohms 0° Res
Bridgeable: Yes
Frequency Response: 20Hz to 20kHz +/-1dB
Efficiency (average): 64% @ 4-Ohm
Total Harmonic Distortion (THD+Noise): 4-Ohm: <1.0%
2-Ohm: <1.0%
Crossover Controls: Front Channels
High-Pass/Low-Pass (HP/LP): 50Hz-250Hz @ 12dB/octave Butterworth

Rear Channels
High-Pass/Low-Pass (HP/LP): 50Hz-250Hz @ 12dB/octave Butterworth
Tone Controls: Punch Bass: 0dB/+6dB/+12dB @ 45Hz
Input Sensitivity: 150 mV to 4 V
Signal Input: Low Level: 2 RCA Pair
High Level: 2 x 4-pin MOLEX
Signal Output: -
Power Input Connector: Barrier Strip
Power Wire Gauge: 4 AWG
Speaker Output Connector: Barrier Strip
Speaker Wire Gauge: 8 AWG
Heat Sink Type: Extruded Aluminum
Cooling: Convection
Remote Controls: -
Visual Indicators: Power/Protect LED
Circuit Topology Class: Class-A/B
Operating Voltage: 9 - 16 VDC
Recommended Fuse
(not included):
50 A
Max. Current Draw (13.8V Sinewave): 40 A
Average Current Draw (13.8V Music): 20 A
Suggested Alternator: 75 A
Shipping Weight: 7 Lbs. (3.17 Kg.)
Dimensions (HxWxL): 1.98 x 6.77 x 11.22 (in)
5 x 17.2 x 28.5 (cm)
Dimensional Diagram:

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Return Authorization

Contact the Authorized Rockford Fosgate Dealer you purchased this product from. If you need further assistance, call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.

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