Rockford Fosgate R750-1D 750 Watt Class-D Mono Amplifier

SKU Rockford Fosgate R750-1D

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Rockford Fosgate R750-1D 750 Watt Class-D Mono Amplifier


$549.00 $649.00

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750 Watt Class-D Mono Amplifier

The PRIME R750-1D is an ultra-efficient mono amplifier that can produce 750 Watts into a 1-Ohm load without taxing the electrical system. The frequency response of the R750-1D is optimized exclusively for use with subwoofers.

  • 12dB/octave Butterworth crossover
  • Infrasonic filter
  • On-board Punch EQ with +18dB boost @ 45Hz.
  • RCA pass-thru outputs
  • Real time output and power supply thermal sensing
  • Cast aluminum heatsink
  • Top mounted controls
  • 4 Gauge power/ground connectors
  • MOSFET power supply
  • Short circuit protection
  • Muted turn on
  • 1 Year Standard Warranty 


The Prime R750-1D amplifier offers high efficiency through the implementation of its Class-D circuitry while delivering rich, full bass to any system. This amplifier is optimized for subwoofers with the implementation of an infrasonic filter to keep those ultra-low (inaudible) bass notes from damaging your subwoofer system. Match with a 4-channel stereo amplifier for your mids/highs and you’ll have a Rockford Fosgate system that any Car Audio Fanatic will envy.


CEA-2006 Compliant:
Number of Channels: 4
Rated Power 
(RMS Continuous Power):
250 Watts x 1 @ 4-Ohm 
500 Watts x 1 @ 2-Ohm 
750 Watts x 1 @ 1-Ohm
Total Power 
(Sum of Rated Power):
750 Watts RMS
Dynamic Power 
310 Watts x 1 @ 4-Ohms 0° Res 
567 Watts x 1 @ 2-Ohms 0° Res 
966 Watts x 1 @ 1-Ohm 0° Res
Bridgeable: No
Frequency Response: 20Hz to 250Hz +/-1dB
Efficiency (average): 85% @ 4-Ohm 
85% @ 2-Ohm 
80% @ 1-Ohm
Total Harmonic Distortion(THD+Noise): 4-Ohm: <1.0% 
2-Ohm: <1.0% 
1-Ohm: <1.0%
Crossover Controls: Low-Pass: Variable 50Hz – 500Hz @ 12dB/Octave 
Tone Controls: 0dB to +18dB @ 45Hz
Input Sensitivity: 150 mV to 4 V
Signal Input: Low Level: 1 RCA Pair
Signal Output: Low Level: 1 RCA Pair
Power Input Connector: Block
Power Wire Gauge: 4 AWG
Speaker Output Connector: Block
Speaker Wire Gauge: 12 AWG
Heat Sink Type: Cast aluminum
Cooling: Convection
Remote Controls: Variable 0dB to +12dB @ 45Hz
Visual Indicators: Power 
Circuit Topology Class: Class-D
Operating Voltage: 9 – 16 VDC
Recommended Fuse 
(not included):
100 A
Max. Current Draw (13.8V Sinewave): 80 A
Average Current Draw (13.8V Music): 40 A
Suggested Alternator: 75 A
Shipping Weight: 6.6 Lbs. (2.99 Kg.)
Dimensions (HxWxL): 1.97″ x 6.77″ x 9.10″ 
(5cm x 17.20cm x 23.10cm)
Dimensional Diagram:
0.0000 kg

Rockford Fosgate R750-1D


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For over 40 years Rockford Fosgate has produced audio products for cars, boats and recreational vehicles.

Rockford Fosgate