DI550.4 Full-Range Class-D 4-Channel Car Audio Amplifier, 1,040 Watts Max Power, 2-4 Ohm Stable, Mosfet Power Supply, Bridgeable

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.

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🏆

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.

love this amp. it kicks my 4 300 watts 6.5 skars and tweeters. is very loud and it doesn't even get warn. I would highly recommend this amp.

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.

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.

Powering two 6x9 and two 5” mid/subs in a Jeep TJ.. use a 4g wire! Thing bumps, driving with the top down at 50mph, sounds good. Very happy w my purchase. Initially I had a thinner power wire and ground, too close to the RCA cables, bad whine in the speakers. Separated the power from the RCA routing to this amp and it’s fine! Good deal. Only had a couple weeks, I’ll update if it doesn’t last long this summer.

It does what amps do. I do like the build quality and the compact size. Fits in small areas.

kompakt, passt gut versteckt hinter die Konsole und gibt den kleinen aber kräftigen Lautsprechern deutlich mehr Klang.

Cioè va bene ansi va benissimo . Ma i Watt non sono quelli dichiarati . Per il sub in breadge non li rira mai i 240watt di RMS ne tirerà fuori massimo 150 .... forse .

Pros: Doesn't get hot. Powerful. Goes loud. Cons: Sounds harsh, and becomes strident and very sibilant at higher volumes.

Shocked how well this works. For the price and just in general. Have it running my 4 kicker 6x9s in doors and my 4 inch dash speakers. Have it paired up with 2, 8 inch Memphis Mojo's in a mojo box powered by 1500 watt Memphis amp. In my Ram. Sounds clean and loud. Best setup I've had so far.

Es arbeitet super und passt gut in den Polo