Rockford Fosgate Prime R1200-1D

1200W RMS Prime Series Class-D Monoblock 1-Ohm Stable Amplifier

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• RMS: 400W x 1 @ 4 ohms, 800W x 1 @ 2 ohms, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• Tuned Bass EQ: 0 to +18 dB
• Class D Circuitry
• Dimensions: 6-3/4"L x 11-1/16"W x 2"H

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Product Highlights

• RMS: 400W x 1 @ 4 ohms, 800W x 1 @ 2 ohms, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• Tuned Bass EQ: 0 to +18 dB
• Class D Circuitry
• Dimensions: 6-3/4"L x 11-1/16"W x 2"H


Rockford Fosgate

Authorized dealer

General Features:

  • Rockford Fosgate Prime Series R1200-1D
  • Class-D 1-Ohm Stable Monoblock Amplifier
  • RMS Power Rating:
    • 4 ohms: 400 watts x 1 chan.
    • 2 ohms: 800 watts x 1 chan.
    • 1 ohm: 1200 watts x 1 chan.
  • CEA-2006 Compliant Amplifier
  • Pulse Width Modulated MOSFET power supply
  • Wired remote bass level control included
  • LED power (green) and protect (red) indicators
  • Soft start turn-on
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heat-sink for extreme heat dissipation
  • Input sensitivity: 150mV - 4V
  • Frequency Response: 20 - 250Hz
  • Total Harmonic Distortion (THD): <1.0%
  • Signal to Noise Ration: 100dB
  • Variable low-pass filter: 50 - 250 Hz, 12 dB/octave
  • Subsonic (infrasonic) filter: 15 - 40 Hz , 12 dB/octave
  • Variable Bass Boost: 0 to +18 dB bass boost at 45 Hz
  • Fuse Rating: 150A x 1 (recommended, not included)
  • 12 AWG speaker wire gauge outputs
  • 4 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Weight: 7.825 lbs
  • Dimensions: 11.06"W x 6.77"L x 1.97"H
  • Also Found As: Prime 1200 Watt, R12001D, R1200, R12001
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Check out the Rockford Fosgate Prime R1200-1D Owner's Manual

Product history:

Rockford Fosgate R1200-1D thumbnail
(newest, current model)
Rockford Fosgate R1000-1D thumbnail
(previous model, replaced by Rockford Fosgate Prime R1200-1D)

Specifications & Details

Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
400 watts x 1 channel
RMS Power @ 2 ohms
800 watts x 1 channel
RMS Power @ 1 ohm
1200 watts x 1 channel
RMS Power @ .5 ohm
Power Specifications - Subwoofer Channel
Peak Power @ .5 ohm
Amplifier Specifications
Prime Series
Marine Certified
Amplifier Class
Number of Channels
1 - Mono
Total Peak Power Output
2400 watts
Total RMS Power Output
1200 watts
Maximum Input Gauge Size
Minimum Impedance Unbridged
1 ohms
Minimum Impedance Bridged
Not Bridgeable
Frequency Response
THD at Rated RMS Power
Speaker Level Inputs
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
50 - 250 Hz
Subsonic Filter
15 - 40 Hz
Signal-to-Noise Ratio
100 dB
Remote bass/level controller
Fan Cooled
Fuse Rating
150A In-Line Fuse Required
CEA-2031 Compliant
Sonic Certified Amplifier
Not Tested
Amp Bluetooth Connectivity
Hi-Res Certified
Low-Level Input Sensitivity
High-Level Input Sensitivity
What is in the box?
User manual
WITB: Amplifiers
Wired gain knob (wire attached)
Mounting screws (4)
Allen wrench
Other Accessory #6
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details


Model Number:




Internal SKU:


Internal Product ID:


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

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Amazing Amp

This amp is an absolute monster at putting out wattage! I was surprised with how small this thing is too especially since it puts out so much! The only problem I had with this amp was that the description says it fits 0 gauge although there is no way that it fits 0 gauge, I had to buy special adapters to compensate for this although not a big deal in the long run!

By Kevin on November 14, 2014


found this helpful.

Rockford prime 1500

Installed this amp to run two 10" Rockford Fosgate P3 shallows and it hits.very pleased with price,shipping and quick service.

By Me on March 17, 2014


found this helpful.

Excellent amp for the price

I have this amp pushing 2 Kenwood shallow mount 12-inch subs in my truck. The birth sheet on mine said 1300 watts even, and I have no doubt it puts out that much power. I also have a Prime 400-4D running my Kenwood components in the doors. Maybe they don't have some of the ultra-cool, competition-level amp features found on more expensive amps, but that's not what I bought them for. I like how this amp sounds, and I don't intend to enter any sound competitions anyway. I can't even turn the system all the way up and stay in the truck; that's how loud it is. And even in 95-degree Florida Panhandle weather, neither of my Prime amps get very warm. I would definitely recommend this unit for anyone wanting to add some serious power to their system without having to spend large sums of cash.

By Stephen on September 15, 2014


found this helpful.

Great Amp

This amp puts out more than it is rated, the birth sheet on my amp said 1300 watts rms. Overall it's a great amp for the money.

By Cole on September 24, 2014


found this helpful.

lots of power for the price

My birth sheet said 1,313 watts at 1 ohm. Can't really beat that for the price. Small amp with a lot of power. I recommend upgrading your battery though. My lights dim a lot on my stock battery. It accepts 4 gauge wire but I would recommend running 1 gauge wire to the trunk then use a 1 gauge to 4 gauge distribution block so you will only have about 1 or 2 feet of 4 gauge for more juice to the amp. It does not have a built-in fuse so you need to buy a fuse holder.

By shaun on February 2, 2014


found this helpful.

Works Amazingly

This amp blew me away. I replaced my POS kenwood kac-9105d amp with this and the difference was night and day. I've owned the amp for 6 months had have had no problems with it. It never overheats, even in the 90+ degree heat. My only complaint is hooking up the power and ground cables. 1. The power is on the right when it is traditionally on the left. I almost blew the fuses the first time I hooked it up and since the fuses are internal, I would've had a completely dead amp. My friend did this with his amp and he had to buy a whole new amp. And 2. Fosgate recommends 2-gauge power and ground cable for this amp but I can just BARELY fit my 4-gauge wire into it. It takes me forever to get the power cable in correctly. Not to mention i have the amp mounted on the back of my sub box out of sight, and the terminals are faced inward towards the box! How stupid is that? So not only is it nearly impossible to fit 4-guage wire into it, but you can't see what the hell you're doing either. And they made all their amps like this! Honestly, they could have done things better and made things a lot simpler.

By John on May 26, 2014


found this helpful.

Awesome Value

I purchased this for a quick replacement for a 5 year old MTX amp that went out; I was very surprised how great this amp sounds with my 2 Rockford Fosgate P3SD412 subs considering how inexpensive and small it is!!!

By Joby on December 27, 2011


found this helpful.

Great amp!

Great amp, compact aids in install and price is fair.

By Jr. on January 30, 2014


found this helpful.

amazing buy

Bought this amp to push 1 kicker 12" l7 @ 2 ohms but then I got rid of that sub and got my hands on 2 kicker l5 15's running @1ohm. This amp does a lot more power than it says it can.. By far the best purchase I've ever made. Rememeber people, YOU GET WHAT YOU PAY FOR! If you buy this amp, you will NOT be disappointed!!

By will on August 7, 2013


found this helpful.

Second To None!

This is a very powerful amp in a very small package. I paired it with two Rockford Fosgate P3's in a bandpass box. I would definitely recommend it for those wanting the most for their money.

I only have one complaint...the website states that this amp accepts a 0/1 gauge wire for power, but it doesn't. 4 AWG is the largest size that will fit.

Overall it is an excellent product at a very low price.

By Medic Mike on September 20, 2013


found this helpful.


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