Rockford Fosgate R750-1D | 750W Monoblock 1-Ohm Stable Amplifier

Rockford Fosgate Prime R750-1D (Ships as R2-750x1)

750W RMS Prime Series Class-D Monoblock 1-Ohm Stable Amplifier

750W RMS Prime Series Class-D Monoblock 1-Ohm Stable Amplifier

• RMS: 250W x 1 @ 4 ohms, 500W x 1 @ 2 ohms, 750W x 1 @ 1 ohm
• Total RMS Power: 750W
• CEA-2006 Compliant
• Punch Bass: 0 to +12 dB
• Class D Circuitry
• Dimensions: 6-11/16"L x 9-1/8"W x 2"H


List price $389.99
Save: $90.00


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FREE delivery: Tue, June 22 to VA.

Item Condition: Brand new

The item is brand new and not used.


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Looking for a monoblock with reliable power ratings and efficiency without having to spend a fortune? Sonic Electronix is excited to introduce Rockford Fosgate's R750-1D. With a rating of 250 watts x 1 channel @ 4 ohms, 500 watts x 1 channel @ 2 ohms, and 750 watts x 1 channel at 1 ohm, this amplifier is perfect for those looking to amplify anything from entry level to some more serious power at the 1 ohm rating. Fine tuning your amplifier will be a cinch with the use of the variable high-pass, infrasonic, and variable bass boost crossovers. The use of a cast aluminum heat sink will control heat dissipation to keep your amplifier running cool and efficient no matter how long or short your listening sessions turn out to be. So if you are looking for a Class D high efficient monoblock amplifier that will never let you down, then look no further than Rockford Fosgate's R750-1D.

Rockford Fosgate R2-750X1

Rockford Fosgate Prime 750 Watt MonoBlock Amplifier
Quantity: 1

General Features:

  • Rockford Fosgate Prime R2-500X1
  • Class-D FullRange MonoBlock Amplifier
  • RMS Power Rating:
    • 4 ohms: 250 watts x 1 chan.
    • 2 ohms: 500 watts x 1 chan.
    • 1 ohm: 750 watts x 1 chan.
  • Total power output: 500 watts
  • Balanced Differential Inputs with RCA Pass Through Outputs
  • High Level Input Capable
  • Defeat able Auto Turn On Circuit
  • Features C.L.E.A.N. Set-up
  • Variable Input Gain adjustment level
  • R.L.C. Remote Level Control
  • Variable Infrasonic Filter
  • Continuously Variable On Board Punch EQ
  • Top Mounted Control Panel
  • Short Circuit & Over Current Protection
  • CEA-2006 Compliant & CE Compliant
  • Full Range Class D
  • Rollback Protection
  • Fully Adjustable 12 dB/octave High and Low pass Butterworth Crossovers
  • Input sensitivity:
    • Low-Level: 150 mV - 4 V
    • High-Level: 450 mV - 12 V
  • Frequency Response: 20 Hz - 250 Hz
  • Total Harmonic Distortion (THD): >1%
  • Crossover Controls
    • Low-Pass: 50 Hz - 250 Hz
    • Sub Infrasonic: 15 Hz - 40 Hz
  • Recommended Fuse Rating: 120A
  • 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.
  • Dimensions: "1.9" x "6.8" x "10.1"
  • Authorized Internet Dealer
  • 1 Year Manufacturer's Warranty
Check out the Rockford Fosgate R2-750X1 Owner's Manual

Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
250 watts x 1 channels
RMS Power @ 2 ohms
500 watts x 1 channels
RMS Power @ 1 ohm
750 watts x 1 channels
Amplifier Specifications
Amplifier Series
Prime (Rockford Fosgate)
Marine Certified
Amplifier Class
Number of Channels
1 - Mono
Total Peak Power Output
1500 watts
Total RMS Power Output
750 watts
Maximum Input Gauge Size
Minimum Impedance Unbridged
1 ohms
Minimum Impedance Bridged
Not Bridgeable
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
Bass Boost
0 - 18 dB
Bass/Gain Remote
Fan Cooled
Fuse Rating
100A X 1 In-Line Fuse Recommended
Total Fuse Rating
CEA-2006 Compliant
Sonic Certified Amplifier
Not Tested
Amp Bluetooth Connectivity
Hi-Res Certified
Authorized Dealer
Authorized Dealer
Authorized Dealer
What is in the box?
WITB: Amplifiers
Wired gain knob (wire attached)
Mounting screws (4)
Allen wrench
User manual
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
  • 3Sixty3 Aftermarket Setup Wizard Tutorial
  • Rockford Fosgate Prime Series Amplifiers
  • How To Install an Amplifier: Car Amplifier Basics Part 2
Rockford Fosgate Prime R750-1D (Ships as R2-750x1)

Rockford Fosgate Prime R750-1D (Ships as R2-750x1)



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By feature average rating



March 5, 2014

Amazing Amp!

I purchased this amp and I love what it can do! As most have previously stated, the amp pushes more than the 750w @ 1ohm as stated. The birth certificate with mine rated is at 880 watts. I am a HUGELY loyal RF amp and sub person but have always been leary of buying their PRIME line of products because they aren't "supposed" to be Fosgate's best line. This has changed my mind on the PRIME line. This hits just as hard as some of my older previous PUNCH and POWER amps!
I have it powering 2 RF P2's @ 1ohm in a ported box that I got here at Sonic Elextronix (P2-2X12) and it has almost rattled off the rear view mirror on the windshield!


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November 9, 2012

Love this amp!

This amp is awesome! Love everything about it! Rated for 750 rms but most of them are over 900 rms @ 1 ohms (that will vary per amp of course) gotta love rockford for throwing in birth cirtificates and extra powa!


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August 22, 2012

Rockford Fosgate R750-1D

When I first received it I realized that it was smaller than a previous Rockford Fosgate amp I purchased so I was worried it wouldn't push the full power it says it can output. The birth sheet that came with it says a total of 916 watts RMS @ 1 ohm sitting at 14.4v of course. This amp has some serious power for being so tiny! It outputs clean strong power that doesn't lack even on a hot summer day here in California. As the matter of fact I was able to drive from Fresno, CA to Pismo Beach, CA which is a 3 hour long drive and it never shut off on me.
I would recommend doing the 'Big 3 Upgrade' on your electrical system so you don't put so much stress on your battery and alternator. I recommend you buy this amp especially since it offers almost 1,000 of true power without leaving the wallet empty.


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September 17, 2013

Great Value

Great product for great price. Easy to adjust equalizer and comes with volume knob


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April 27, 2012

Right choice

I thought this amp would not be able to drive my p3-12 Rock ford Fosgate sub but it gave me a big surprise, i bought this amp to add a little base to my factory stereo and i have no regrets if you are looking for a nice upgrate for your factor stereo well this is one of the best amp on the market thanks to sonic.


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October 28, 2013

Very good value

It was a really good amp for the value. I had it hooked up to a rockford t1 2 ohm 12" and it sounded really good.


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June 14, 2014

the little amp that could

this is a GREAT amp it pushes what it says and over and I know for a fact that it's .5ohm stable or can push it

this amp is probably the best ive had in a long time... it preforms about like a punch 600.1 I would even say thats it's closest retaliative.


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April 14, 2012


I have this product hooked up to an 10" atomic subwoofer and my head unit is a double din pioneer. It is rated for 400 watts at 4 ohms and this amplifier matches it perfectly, although on the box it did not say it was rated for 400 watts at 4 ohms like it does on the website. The remote bass accessory that comes with this is a must! It is so easy to adjust the bass on the go and I use it all the time, and although there is a light on it that is quite bright, it turns on with the amp so you always know when it is on, which is nice. I will buy another Rockford Fosgate Product.


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August 16, 2012

really good amp!

i bought this amp b/c of brand & reputation of Rockford Fosgate. i have this amp for my JL Audio w6 10" sub & thus amp preforms very well doesnt get hot at all & is very reliable. i highly reccommend this amp.


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March 10, 2012

Tiny amp with alot of heart!!!!!!!!!

I recommend this amp for a two sub combination, my amp birthsheet was 918 and i have 2 re audio srx 12s in a slot ported box and this amp pushes those 12s with ease. A must buy, don't let size fool you. Durability is Rockford Fosgate.


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July 11, 2014

Happy happy happy

Very good product n very helpful staff very pleased with everything


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Carl J. Son

December 18, 2014

Wow!!! Power just as you would Expect from Rockford Fosgate

I purchased this 750 watts RMS amp to push 2 Sundown Audio SD2-10's in a behind rear seat box for my 13' Tundra Crewmax. It came with a birth certificate that said 872 watts RMS. I can honestly say with the FOX Audio ported box it sounds like I could compete i Bass competitions. I have it down really low and it still POUNDS. Powerful Amp well worth the money and the body is small so you can install it anywhere.


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October 6, 2014

Buy, Buy, Buy, Buy, Buy, Buy, Buy, Buy, Buy, Buy, Buy, Now.....

Bought, installed, waited to burn in my sub. Yesterday I finally turned the gain up and BOOM! Why would anyone want to spend money on anything else?! This thing rocks. I think I need a cap.


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July 31, 2012

great amp

this is a great amp, i have it hooked to 2 fockford fosgate p2 10" & this amp pushes them hard very impressed how much power comes from this lil amp


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March 9, 2015

great product, loud, accurate and efficient

I enjoy it immensely, upgraded from an older Crossfire amp and there's a big improvement. it can handle my Rockford Fosgate Punch P3 Series Car Audio Subwoofers P3D4-15 Punch Series 15" Subwoofer

love it, if you have to want an extra month for money, do it, It'll probably outlast your car and sound great in the process!


found this helpful.

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750W RMS Prime Series Class-D Monoblock 1-Ohm Stable Amplifier


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