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FREE 30-day refund/replacement
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Availability:
Only 4 left in stock, order soon!
Arrives
Monday, Nov 9
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At a glance
- Condition
- New
- Model
- XMS400D
- Weight
- 1.8 lb
- Warranty
- 1 year
Features 3
- Continuous power output of 45 W per channel (at 4 ), Class-D Technology, Compact Design
- Built-in LP (low-pass) filter and HP (high-pass) filter, Protection circuit and indicator provided.
- High level or low level input connection, Hi-level Sensing Power On
Description
Power up your in-car sound with the XM-S400D 4-channel amplifier. With a continuous power output of 45 watts per channel, your music comes to life with depth and detail. Its compact size allows you to get the sound you deserve without losing any of the space that you need. Frequency Response: 20-20 kHz
Specs 7
| Manufacturer | Sony Mobile Communications, (USA) Inc |
|---|---|
| Brand | Sony |
| Mfr Part Number | XMS400D |
| Model Number | XMS400D |
| Unit Count | 1.0 Count |
| Item Weight | 1.8 Pounds |
| Built-In Media | 4 Channel amplifier, Harness, screws, mounting tabs, instructions |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Nov 9
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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- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
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Top Amazon Reviews
Little Sony beast
Ok. Just installed it on a Corolla 2009 non-jbl using the stock radio. I didnt want to replace the radio as i am not into loud music, but my speakers were damaged so i had to replace then and wanted to make use of their full potential. The amp does its job very well. I am very impressed. It fits behind the radio perfectly. It is powerful enough to output good sound without blasting, but im sure it can. Well worth the money. Had to play with the wiring but i was able to install with harnesses without cutting any of the original car wires, just the harnesses.
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Reviewed in the United States on October 12, 2025 by Eric Leon
Very good at what it does
I got this because I didn't want to fill my trunk full of bulky, heavy, space eating gear. All I was after was a little more kick to the sound of my Sony CDX G1200U I purchased a couple years back and this works very well. It doesn't pick up engine noise or get real hot when used for an hour or more. It will let you know if your original recording has trash in it like hiss or pops because they will be more pronounced, but good clean original CDs or MP3 files sound great. The radio sounds like a radio but better. The installation instructions are easy to follow and it comes with all the cords and plugs you need. If you are looking for a system that will rattle your windows and license plate this isn't it, but it is a Sony product so the quality is there.
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Reviewed in the United States on July 13, 2020 by Steven K.
Good until it wasn't.
Overheated and stopped working the first time I used it. It did sound really good while it lasted. I ended up sending it back for a full refund.
Reviewed in the United States on June 10, 2025 by Tim Hendrix
Awesomeness
Very small and powerful. Fit my needs perfectly in Jeep TJ where passengers airbag used to be.
Reviewed in the United States on August 15, 2025 by Sam
Nice amp!
Really cleaned up the sound and I liked how it mounted right behind my existing stereo
Reviewed in the United States on August 14, 2025 by Dawn C
Powerful for being compact. No remote wire needed
Super compact have push great sound. Installed in my gen3 Tacoma right behind my aftermarket stereo. I’m using front aftermarket speakers and stock rears and I get decent base.
Reviewed in the United States on May 7, 2025 by DaddyLongLegs
Not that great
Its just ok, it definitely added power and the volume goes louder, but the filtering isnt great. Doesn't produce that great of sound, just a powerful sound. Fit is great, its small, I have plenty of distortion. Functionality is ok, you cant adjust the gain, and it cant really be powered by your cars power and ground wires ran to the speakers. This needs a dedicated power and ground from the battery. Theres another popular brand is the first ones to make mini amps like this popular that I have used in the past, its a bit more expensive but its easy better. And has more fine tune controls, id buy the other brand before I bought this again
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Reviewed in the United States on March 27, 2026 by Mike
Great upgrade
This amp works great, I hook it to the old cigarette lighter circuit that is 15amps so no need for extra wiring, clean and powerful sound, easy to install.
Reviewed in the United States on June 26, 2025 by Jose Guerrero