--- product_id: 176266000 title: "Prime R2-300X4 300-Watt 4-Channel Amplifier | Class-D, Extremely Efficient, Reduces Demand on the Vehicles Electrical System" brand: "rockford fosgate" price: "$702.95" currency: USD in_stock: true reviews_count: 9 category: "Rockford Fosgate" url: https://www.desertcart.us/products/176266000-prime-r2-300x4-300-watt-4-channel-amplifier-class-d store_origin: US region: United States of America --- # 300W RMS power output Class-D efficiency reduces electrical load 12 dB/octave adjustable crossovers Prime R2-300X4 300-Watt 4-Channel Amplifier | Class-D, Extremely Efficient, Reduces Demand on the Vehicles Electrical System **Brand:** rockford fosgate **Price:** $702.95 **Availability:** ✅ In Stock ## Summary > 🎵 Amplify Your Drive, Own the Road ## Quick Answers - **What is this?** Prime R2-300X4 300-Watt 4-Channel Amplifier | Class-D, Extremely Efficient, Reduces Demand on the Vehicles Electrical System by rockford fosgate - **How much does it cost?** $702.95 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/176266000-prime-r2-300x4-300-watt-4-channel-amplifier-class-d) ## Best For - rockford fosgate enthusiasts ## Why This Product - Trusted rockford fosgate brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bass That Hits Harder:** Integrated Punch EQ boosts bass up to 3X, correcting acoustic flaws for immersive depth. - • **Tailor Your Soundscape:** Fully adjustable high and low pass Butterworth crossovers let you customize audio precision. - • **Plug & Play with Confidence:** C.L.E.A.N. circuitry simplifies gain adjustments, backed by Rockford Fosgate’s legendary build and 1-year warranty. - • **Efficiency Meets Performance:** Class-D tech minimizes strain on your vehicle’s electrical system—more power, less drain. - • **Power That Commands Attention:** Delivers up to 300 Watts RMS across 4 channels for crystal-clear, room-filling sound. ## Overview The Rockford Fosgate Prime R2-300X4 is a compact yet powerful 4-channel Class-D amplifier delivering 300 Watts RMS. Engineered for efficiency, it reduces electrical load while offering customizable sound with adjustable crossovers and Punch EQ. Perfect for upgrading your car audio with clean, punchy bass and reliable performance, all backed by a 1-year warranty. ## Description Buy Rockford Fosgate Prime R2-300X4 300-Watt 4-Channel Amplifier | Class-D, Extremely Efficient, Reduces Demand on the Vehicles Electrical System: Multichannel Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Great amp - It may be a prime but it’s perfect amp for my 6.5 and 6x9 Punch. The clean indicator is a great feature Review: Great Sound at a great price. - I needed to replace the Bose system in my car 06 Envoy. So I replaced the two front door speakers with the p 167 5 from Fosgate. Bypassed the factory amp and replaced it with the are two three hundred amp from Fosgate. Not a lot of money to spend but what a difference in sound quality. So anyone looking to improve their sound system on the cheap you should really look Fosgate amps and speakers. You will be amazed. ## Features - The R2-300X4 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 300 Watts of RMS power - Class D technology makes this amp extremely efficient by reducing demand on the vehicles electrical system (RMS Power: 50 Watts x 4 @ 4Ω OR 75 Watts x 4 @ 2Ω OR 150 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07X8QVRJW | | Best Sellers Rank | #95,395 in Electronics ( See Top 100 in Electronics ) #200 in Car Multichannel Amplifiers | | Brand | Rockford Fosgate | | Brand Name | Rockford Fosgate | | Customer Reviews | 4.8 out of 5 stars 168 Reviews | | Global Trade Identification Number | 00780687355821 | | Included Components | R2-300X4 | | Item Weight | 2.2 kg | | Manufacturer | Rockford Fosgate | | Maximum Output Power | 300 watts | | Maximum Supply Voltage | 16 volts_of_direct_current | | Minimum Supply Voltage | 9 volts_of_direct_current | | Model | R2-300X4 | | Mounting Type | Through-Hole Mount | | Number of Channels | 4 | | Number of Items | 1 | | Number of Packs | 1 | | Output Power | 300 watts | | Part Number | R2-300X4 | | Specification Met | CE, FCC, WEEE | | UPC | 780687355821 | | Unit Count | 1 Count | | Warranty Description | 1-Year Manufacturer Warranty | ## Product Details - **Brand:** Rockford Fosgate - **Manufacturer:** Rockford Fosgate - **Maximum Supply Voltage:** 16 volts_of_direct_current - **Minimum Supply Voltage:** 9 volts_of_direct_current - **Mounting Type:** Through-Hole Mount ## Images ![Prime R2-300X4 300-Watt 4-Channel Amplifier | Class-D, Extremely Efficient, Reduces Demand on the Vehicles Electrical System - Image 1](https://m.media-amazon.com/images/I/71b4UILM1TL.jpg) ## Questions & Answers **Q: Will this amp power 2 6x9s 2 5x7s 2 regular tweeter and 2 3.5 tweeters all Rockford ?** A: As far as wattage goes, it shouldn't have any trouble. This is a 4channel amp so I assume you are going to connect a single woofer and a single tweeter to each of the 4 channels. I would definitely use an external crossover to keep the lows out of the tweeters. Your tweeters may already have one built in? Just be sure when connecting 2 speakers to a single channel, the combined ohms = 2ohms or 4ohms. That is the amps operating range. So.. I don't know the ohms of your speakers, but for this example, let's just say they are both 4ohms. In this example, you will need to connect the speakers in parallel, which will put a 2ohms (4/4=2) load on the amps channel. This is within the amps range and you'll get 75watts of power from that channel. If you connect them in series, that will create an 8ohm (4+4=8) load and that is outside the amps recommended range. There won't be enough wattage to get good amplification. Now in this next example that each of your speakers is rated at 2ohms. In this example, you will need to connect the speakers in series, which will put a 4ohm (2+2=4) load on the amp's channel. This is within the amps range and you'll get 50watts of power from that channel. If you connect them in parallel, that will create a 1ohm (2/2=1) load and that is outside the amps recommended range. The amp could overheat and be permanently damaged. So just remember to wire your speakers so that the combined impedence (ohms) per channel stays within 2-4 ohms. It is also best to keep each channel the same. So... one woofer and one tweeter per channel. Don't connect all 4 woofers to the back channels and all 4 tweeters to the 2 front channels. You'll likely under power your woofers and over power your tweeters. I hope this helps. There's plenty of info online about wiring speakers in series vs parallel. So one more thing. This happens all the time with component speakers (1 woofer, 1 tweeter, 1 crossover) and 2, 3, and 4way speakers, which are just having the tweeters mounted to the center (coaxially) of the woofer. Impedence (ohms) too high = lowers the power output. Impedence (ohms) too low = puts too much strain on amp. I hope this helps. :-) **Q: Would this push 2 ds18 6.5 500 watts a piece and 2 ds18 6x9 500 watts a piece. or should i get a 400 fosgate** A: Any amplifier will push these speakers and sound great in a car. If you want to win car wars, you need more power to push these speakers to their limits. **Q: Is rockforgafe amp a good match for kicker 6x9** A: Yes it is **Q: Can this amp handle 2ohm load while bridged?** A: Im running that with a sundown audio 12. Beast mode. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great amp *by S***H on June 5, 2026* It may be a prime but it’s perfect amp for my 6.5 and 6x9 Punch. The clean indicator is a great feature ### ⭐⭐⭐⭐⭐ Great Sound at a great price. *by J***N on June 7, 2021* I needed to replace the Bose system in my car 06 Envoy. So I replaced the two front door speakers with the p 167 5 from Fosgate. Bypassed the factory amp and replaced it with the are two three hundred amp from Fosgate. Not a lot of money to spend but what a difference in sound quality. So anyone looking to improve their sound system on the cheap you should really look Fosgate amps and speakers. You will be amazed. ### ⭐⭐⭐⭐⭐ Poweful *by D***E on May 7, 2026* Great quality using on 2-12subs ## Frequently Bought Together - Rockford Fosgate R2-300X4 Prime 300-Watt 4-Channel Amplifier - Rockford Fosgate P1694 Punch 6"x9" 4-Way Coaxial Full Range Speakers - Black (Pair) - Rockford Fosgate P1650 Punch 6.5" 2-Way Coaxial Full Range Speaker - Black (Pair) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/176266000-prime-r2-300x4-300-watt-4-channel-amplifier-class-d](https://www.desertcart.us/products/176266000-prime-r2-300x4-300-watt-4-channel-amplifier-class-d) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-05*