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To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Thursday, Sep 3
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"
Description
RECOIL Audio was founded in 2004 with only one goal – Great Affordable product! Recoil is vertically integrated with Engineering, Sales, and Marketing teams located in Phoenix, Arizona, USA. Fifty years of industry experience give us the tools to pull from our home and car audio’s technology heritage. This allows us to deliver products that celebrate the best sounding, most innovative products in today’s conscience marketplace. Recoil’s DI550.4 is a powerful, efficient, and highly reliable four channel Class-D full-range car amplifier. Capable of powering an entire aftermarket upgraded speaker system in a vehicle, it packs the power that will allow you to get loud and let your speakers come alive. RED600-1 RED800.4 RED1200-1 DI600.1 DI550.4 DI800.4 DI1200-4
Manufacturer: RECOIL
Mounting Type: Surface Mount
Brand: RECOIL
Number of Channels: 4
Operating Temperature: 85 °C
Mounting Type: Surface Mount
Number of Channels: 4
Operating Temperature: 85 °C
Output Power: 1040 watts
Maximum Output Power: 1040 watts
Material Type: Metal
Specification Met: CE, FCC, RoHS
Manufacturer: RECOIL
Model: DI550.4
Brand Name: RECOIL
Part Number: DI550.4
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Sep 3
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
Perfect. Nice and small, lots of power to run a nicer set of speakers. Easy to install, easy to tune. Great clear sound. Will be using this again.
Reviewed in the United States on July 14, 2026 by Lucas
This is a powerful amp and the sound quality is outstanding. You can't go wrong with this amp. Class d amps are the way to go they run cool and are energy efficient. Have a small foot print, with a very good fit and finish and like I said sound really good. This recoil embodies all the qualities you look for in an amp. The di550.4 is an 80 watts × 4 amp. 95% SNR. But in the recoil DI series line up you can get far more power so choose your need. For me 80 x 4 was more than enough. Now I have a separate powered subwoofer and I'm using a two farad capacitor to drive both amplifiers to get the most out of them. I used this to replace my crunch audio pzx900.4 a/b class amp. Which gave me good service for more than 12 years and I'm not sure altogether that it's still not working I just decided to replace it. Next I will replace the capacitor which is also over 12 years old I won't need to go larger I'll stay with the two farad and just replace the one that is still working but it's time to replace it. With me my stereo is like my friend and if I were to sell my car I would remove my stereo and put the factory one back in, I would take my friend with me to my next car. My head unit is a dual din Kenwood Excelon. I love the kenwoods and I use them exclusively. Go with the excelons and you got the best they have. This amp represents a great value at its price point, can be found for under $90.00 but beyond that it's a best buy in my book. Look for the utube reviews. Recoil for serious sound.
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Reviewed in the United States on March 5, 2026 by Jwin2112
this amp works very well. it stays cool and the power output is amazing it you bridge it to 2 channels. it had very nice sound quality and stereo imaging was great. very easy to handle power requirement too
Reviewed in the United States on April 24, 2026 by Charles Hodges
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
This was good amp while it lasted got 45 days out of it I was pushing 6 6.5 midrange skars been doing long demos believe the amp tap out on me. Would lasted longer but I kept pushing the amp now I have a reason to upgrade. Keep this amp set up simple don't try to push this amp I think it would have lasted longer with 4 speakers running independent channels. You get what you pay for this is a good amp more entry level when it work the music was beautiful and it never clipped
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Reviewed in the United States on August 13, 2026 by Marion
I paired this with a woefully underpowered Android head unit and Kicker c series 6.5" speakers. Because they don't make dash kits for my car this certain head unit was my only option. Before the amp you could have a normal conversation over the music. Lows weren't very pronounced. After installing this amp which I did myself... those Kickers came to life!!!! Music is clear punchy and loud. Advertised wattage is pretty acurate befause my speakers are 100w rms and the amp is 80w rms and it can bottom out those speakers when cranked. Completely happy with this amp. It did everything I needed it to do very well!!! Highly recommend.
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Reviewed in the United States on June 21, 2026 by Skarrd
Couldn't ask got better at the price, sounds great and fits my system perfectly, no issues at all with overheating or outside noise
Reviewed in the United States on July 23, 2026 by Nathanael LaFoe
The fact that the first one I received was D.O.A. I mean nothing worked, no lights or anything. So I proceed to do all the test to verify it wasn't some mixed up something or another. Then called Amazon and bam another one was at my door the next day! No big deal. Right? The next day i installed the 2nd one and at first I thought it was all good. Got it all hooked up and set all my gains with a osilascope so i knew everything was good. That's when I noticed that the front right channel wasn't putting out the same power as the front left channel. So I checked the rear channel and the rear left was only putting out half the power as the rear right. So I shut it down and double check everything was good and all my wiring checked out. Then I turn it back on and the alarm light was lit and wouldn't turn off. I tried everything ( new fuses unhooking everything but +/-/remote turn on, still red alarm. So I called Amazon again and returned it. What are the chances that I got 2 duds in a row. I mean come on. Manufacturing and Q.C. really must be having a bad day or is just non existent. There is a reason why it's so cheap. Do yourself a favor and spend a little more on a name brand amp or keep trying the budget option and kicking yourself in the butt for doing so later...
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Reviewed in the United States on October 24, 2024 by motoman996