









🎶 Unleash bold sound, compact style — your car’s new audio powerhouse!
The STETSOM IR400.4 is a compact 4-channel car amplifier delivering 400W total power with exceptional clarity and bold bass. Designed for versatile setups with woofers, drivers, and tweeters, it features a reinforced power supply, energy-efficient technology, and a sleek aluminum build. Perfect for millennials seeking premium sound quality and stylish design in their ride.









| ASIN | B0757VFW72 |
| Best Sellers Rank | #80,521 in Electronics ( See Top 100 in Electronics ) #41 in Car Multichannel Amplifiers |
| Brand Name | Stetsom |
| Customer Reviews | 4.5 4.5 out of 5 stars (557) |
| Global Trade Identification Number | 00607939047399 |
| Included Components | amplifier |
| Item Dimensions | 5 x 75 x 5 centimeters |
| Item Weight | 0.59 Grams |
| Manufacturer | Stetsom |
| Material Type | Plastic, Metal |
| Maximum Supply Voltage | 15 Volts (DC) |
| Minimum Supply Voltage | 13.8 Volts (DC) |
| Model | IR400.4 |
| Mounting Type | Freestanding Mount |
| Number of Channels | 4 |
| Operating Temperature | 55 Degrees Celsius |
| Output Power | 400 Watts |
| Package Type Name | Box |
| Specification Met | FCC |
| Supply Current | 16 Amps |
| UPC | 607939047399 |
| Voltage | 13.8 Volts |
A**.
Works Well!!!
Amazing! delivered right on schedule!
S**S
Great
V. Good
T**O
Boa qualidade
F**O
Muy buen producto y exelente respuesta con sus 400 watts y sobre todo muy compacto
R**D
This little amp is really powerful for its size
M**O
This amp is awesome for powering my high pass speakers. Just enough power to sound better than simply running components from my head unit. If you have experience in installation of car audio, this amp will be a breeze. My only complaint is that the terminals for power and ground are directly beside one another(unlike most amps, In which, the remote is usually in the center) This being said, I could see how easily one could fry this amp if they aren’t careful. This is a company from Brazil, but they do have a hq in Florida for tech support in the states. Great amp for about half the cost of most brands. I will post updates on how it performs over time. Great job Stemsom!!!! One month later and I figured out how to make this little guy go hard! These Brazilian amplifiers love the voltage from the rca cables to be on the higher side for voltage, so I put my signal through a clarion equalizer first to juice up the voltage, and let me tell you! Louder and richer than before. I don’t care if this amp fries, I have already got my money worth!
A**R
Tiny but holds a punch. Great for my tweeters
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