Recoil DI550.4 Full-Range Class-D 4-Channel Car Audio Amplifier, 1,040 Watts Max Power, 2-4 Ohm Stable, Mosfet Power Supply, Bridgeable
Condition: New
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Availability:
In Stock.
Arrives
Feb 26 – Feb 27
Features
- Class D 4-Channel Amplifier, 1040 Watts Max Power, RMS 130 Watts x 4 Channels@2 Ohm; RMS 80 Watts x 4@4Ohm; RMS (Bridged): 260 Watts x 2@4Ohm; Peak Power: 260 Watts x 4@2Ohm
- Featuring a high-speed MOSFET power supply, premium grade internal components, as well as 4-way protection circuitry, the amplifier will safely operate at the highest levels of performance for hours on end.
- With a depth of adjustable user controls such as the gain, LPF, HPF, crossover, and bass EQ, this amplifier is extremely versatile and can be used in countless applications.
- Highly efficient heatsinks keep the amplifier cool with a sophisticated new look.
- Dimensions: 7.48" x 5.90" x 1.77"
Manufacturer: RECOIL
Mounting Type: Surface Mount
Brand: RECOIL
Number of Channels: 4
Operating Temperature: 85 Degrees Celsius
Manufacturer: RECOIL
Mounting Type: Surface Mount
Brand: RECOIL
Number of Channels: 4
Operating Temperature: 85 Degrees Celsius
Output Power: 1040 Watts
Specification Met: CE, FCC, RoHS
Material: Metal
Package Dimensions: 10.43 x 7.91 x 3.39 inches
Item Weight: 3.41 pounds
Item model number: DI550.4
Date First Available: December 29, 2021
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Feb 26 – Feb 27
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Outstanding little powerhouse mids/hi amp. I replaced my old worn Prime 4 ch A/B amp with this little beast and I'm impressed. Gains are turned way down, and this amp makes my Hertz Unos come to life. Incredible power and clarity from a Class D unit. Incredible value for the clean signal and power this amp delivers. No noticable hiss or distortion what so ever. Recoil for the win🏆
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Reviewed in the United States on June 8, 2025 by gcuervogold
Excellent quality amp for the price. I bought this amp to replace the Boss 4 channel amp that had a high pitch noise. I am pleased that this amp has no signal noise and works perfectly. If I put together another sound system...I'm definitely buying this amp again.
Reviewed in the United States on August 7, 2025 by Matthew Lagdon
Great 4 channel amp. I have it on my vehicles stock speakers with gains set above half. I use the high pass filter on my head unit to filter 125hz and below. The stock speakers get loud and clear. They would blow if I allowed the lower frequencies through. My volume on 16 is all I can take. It’s loud and I like loud! I recommend this amp it runs cool and provides power.
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Reviewed in the United States on May 8, 2025 by Sean A.
Used this amp to push 2-6.5” and 2-4.5” skar audio speakers in my jeep. And I can say it has the power and the sound quality is great compared to the bigger brand named amps. I used this to replace an old 1000w 4ch alpine amp. And fits perfectly under the steering column in a jeep TJ.
Reviewed in the United States on July 3, 2025 by Thomas B. Thomas B.
I picked this amp over many others in the field for the following reasons: 1) Size - I had a very specific install location and this is one of the few options that would physically fit. 2) Signal to Noise (SN) Ratio - This device claims to have a 95db SN ratio (for reference, CD quality is about 104db SN and anything less is going to be less than CD quality, but remember you are in a CAR so anything over 100 SN is hard to tell while driving). 3) Price and delivery - I preferred another amp but it is backordered so decided to give this one a try. The install went well and the unit worked just fine out of the box. I'm glad that after an hour of heavy burn-in testing, it was warm and not hot to touch! I had no trouble pushing 4 component sets of Alpine S2s hard. I dare say the power is as-advertised from a small class D! The combo RCA inputs for high/low power are bizarre. If you wanted to use this for high power, you would have to sacrifice some RCA cables and rig up the inputs to make this work which I'm glad I didn't have to do. I was using low power signal level inputs, but if I wasn't, that would be a big show stopper and I'd throw it down to 2 stars and suggest an amp that has wiring for hi level inputs ready to go. 95db SN ratio it isn't though. There is present hiss from the speakers with no source which is a sure sign of overrated SN and THD. I have a dead-quiet EV that I'm using it in. But again, at the price point, I'm reasonably pleased with the purchase and think it is still a good value. For the SN deficiency and the hi input strangeness, I'm going to subtract a star. I would recommend and buy it again for any non-luxury vehicle that isn't dead-quiet inside. UPDATE - The literature that came with the amp says it is 85db SN. The value in the posting is INCORRECT. At least my ears weren't deceiving me.
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Reviewed in the United States on July 12, 2025 by Griffster
i have had this amp for about 10 months now and it still continues to blow me away. it is everything i was hoping and more. the bass it produces is simply incredible. my entire system is recoil products, i am using this amp to power a recoil RW8D4 subwoofer, recoil REM65 component speakers, and recoil RCX65 coaxial speakers and it has all the power in the world and still a ton of overhead left over. i would recommend any recoil product to anyone. i have had absolutely zero issues and every day i am blown away by how great everything sounds. multiple friends who have spent a substantial amount more money on their system, mostly due to shop install versus doing it myself, but also their gear like memphis audio, sundown, jbl, ya know the more "1st class" gear everyone knows about, but even they were either pissed off because they spent so much to get a less end result, or they were just blown away by how good it sounds. im telling yall recoil is a fantastic company i have had absolutely zero issues since i installed myself. not one single time have i ever lost audio or have never had to remove trim pieces to fix something at the speakers. everything has just worked and worked extremely well
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Reviewed in the United States on October 18, 2024 by Jeff
it's a pretty good little amp I like the adjustability on it
Reviewed in the United States on December 22, 2025 by Bryan
Running a set of front components off of this amp. Ran through the hot summer sun and now frigid cold without any problems so far.
Reviewed in the United States on December 30, 2025 by Vincent A. Findley