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Rockford Fosgate R2-500X4 500-Watt 4-Channel Amplifier


About this item The R2-500X4 full-range class-D 4-channel amplifier (1.9″ x 6.8″ x 10.1″) is packed with features and performance to deliver power and bass on demand with 500 Watts of RMS power Class D technology makes this amp extremely efficient by reducing demand on the vehicles electrical system (RMS Power: 75 Watts x 4 @ 4Ω OR 155 Watts x 4 @ 2Ω OR 250 Watts x 2 @ 4Ω Bridged/Mono) Featuring C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass Featuring fully adjustable 12 dB/octave high and low pass butterworth crossovers, balanced differential inputs with RCA pass through outputs, high level input capable, defeat able auto turn on circuit and top mounted controls Famous Rockford Fosgate build quality with a full 1-year warranty when purchased from an authorized Rockford Fosgate reseller
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Rockford Fosgate R2-500X4 500-Watt 4-Channel Amplifier

From the brand

40 anniversary rockford fosgate40 anniversary rockford fosgate

Our story

How we got our start?

The founder, Jim Fosgate, is often referred to as the inventor of the car audio amplifier, marketing the first car stereo systems, and spearheading the car audio revolution. Nothing’s changed. Rockford Fosgate is still the global leader in audio innovation, as your passion is our purpose.

What makes our product unique?

Whether its automobiles, motorcycles, boats, or off-road vehicles, we like to say if it has wheels or floats, we make a stereo for it. Sound built for speed. Purpose built for your lifestyle. Best of all, our entire line of products are designed and engineered in Tempe, AZ, USA!

Why we love what we do?

Truly a line designed by fanatics for fanatics, our family of products are developed by the same people that use them in their everyday lives. It’s the Rockford Fosgate commitment of passion, power and performance built into everything we produce, connecting enthusiasts to their music and machine.

Specification: Rockford Fosgate R2-500X4 500-Watt 4-Channel Amplifier

Item Weight

‎4.95 pounds

Product Dimensions

‎6.8 x 10.1 x 1.9 inches

Item model number




Customer Reviews

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Best Sellers Rank

#34,721 in Electronics (See Top 100 in Electronics) #76 in Car Multichannel Amplifiers

Date First Available

November 13, 2019

10 reviews for Rockford Fosgate R2-500X4 500-Watt 4-Channel Amplifier

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  1. Outdoors in Fl

    Quality blew me away. I installed for years but the power is just simply incredible and absolutely 0 distortion if you follow the manual and have quality speakers. I am running fosgate tweeters and Polk 6 1/2 and 6×9’s in rear with an old 600w precision power with 1 15″ hifonics warrior.

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  2. Joanna Slabaugh

    I brought it to a car place and had lots of problems with it… it was a broken amp

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  3. Dylan Allison

    I bought this amplifier to replace a Pioneer 4×100 amplifier that had a HORRIBLE engine whine problem. Installed this amp and the problem is completely fixed. This amplifier also has a much better crossover then the Pioneer one did. Also extremely fast shipping, I’m so glad the seller decided to use Fedex instead of UPS. UPS is extremely unreliable and actually lost a $380 subwoofer I ordered.

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  4. Aharon

    This amplifier exceed all expectations in every department great sound Quality clarity and pushes more walks than expected I use this for my Harley Davidson Electra glide classic it’s a 2008 and it fits sound and snug beautiful looking sounding and preforming very nice can’t say anything other than this is a powerful amplifier with the sound you can expect from Rockford Fosgate!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Love this amp

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  5. P. Kay

    This amplifier is amazing! The sound quality is excellent! True Rockford Fosgate sound. I replaced a Taramps with this and the sound is night and day difference. I won’t look at any other amp’s in the future for my mids and highs.

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  6. Roger M. Charles

    First time installing a amp and this was easy. Tuning it was easy. Great entry level amp.

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  7. Kevin

    I have purchased and installed more amps than I can count. I have always had plenty of volume in my cars. What makes this amp special is that wired as a 3 channel amp it drives my subwoofer to the hard hitting base I could never obtain from cheep amps that claim to have more power.

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  8. Eric

    This is so loud and clear through my infinity 4ohm references in my Silverado. My audiophile friends all give it a resounding thumbs up

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  9. Ricky Smith

    Been owning this type of amplifier since the 80’s …my first amp was a punch 45 then a 75 , all the way up to a punch 150 ! They have always been great but I must say better with time !! A plus

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  10. A Dude

    After debating with myself over removing or not the Harman Kardon system in my Mercedes, I did it along with installing a modern Android head-unit. Besides the fact that if you don’t do this kind of modification of the entire system, you won’t get the full benefits of a DSP enabled audio system, the sound quality is much improved. I also replaced the speakers with two sets of Infinity Reference 6.5″ component ones for the doors and a Kicker sub-woofer driven by a kicker single channel amp. The CLEAN technology did work unexpectedly well. the power is plentiful (probably 2 1/2 times what the original system was) and the sound is finally NICE. Also for those who might wonder what kind of music I’m into, it goes from opera to rock and oldies… I highly recommend this amp as I don’t regret owning it.

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    Rockford Fosgate R2-500X4 500-Watt 4-Channel Amplifier
    Rockford Fosgate R2-500X4 500-Watt 4-Channel Amplifier


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