Great little amp

Great little amp. Easily doubled the power over my stock radio. Installed in a 2014 Nissan Sentra so not a plug and play. Had to cut and splice into the speaker wires but easily done with the wiring diagram found on line. Cut and splice into the wires behind the radio and mounted the amp to the underside of the glove box. Also spliced into the accessory wire supplied to the radio to also supply the power needed to turn the amp on.

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Sony Mini Amp

I installed this Amp in my 2022 Nissan Altima. The purpose was to give a boost to the Factory radio and to drive the aftermarket Rockfords I recently installed. I was not disappointed. This is a perfect solution to those who don't want to (or cannot) go through the process of installing larger amplifiers either in the trunk or under the seat. This fit right in the dash cavity in my car and the installation was straight forward. There was a significant improvement in overall sound and loudness. Well worth the effort.

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Great little powerful amplifier

This is a small mighty 4ch amplifier that produces great sound quality. It's accepts both hi and low pass inputs and has the auto sensing power turn on built in.

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Happy customer

Everything I purchase from crutchfield is excellent.

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excellent solution

Excellent solution for my needs. I just wanted to add some punch to my factory radio and speakers...while retaining all factory function. This little amp did it well. Not earth-shatter power, but a relatively quick and convenient (velcro securely in void in dash behind radio) way to add volume and bass. I might upgrade speakers next, but significant improvement as is. Great value for dollar.

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Sony XMS400D

This amp is so small I was able to put it in the dash behind my head unit. Installation was a breeze. Sound quality is good but I feel like I might have lost a little volume compared to just the aftermarket head unit and factory speakers. Of course I also upgraded the speakers which are not as efficient as the factory ones. The only thing worrying me is how hot it got after only playing for a short while at moderate volume.

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Sony XMS400D

The output of the head unit was easily doubled this was the simplest amp I have ever installed

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Sony XMS400D

Nice small amp

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Sony XMS400D

This Sony XMS400D really adds sound and clarity to my 6 x 9 kenwood 3 way speakers. The wiring that comes with this unit is easy to follow. The hardest thing I had to deal with was nothing to do with this sony amp. It was actually the existing factory wiring in my nissan frontier. The colors did not match up with the master sheet so I had to trace each wire to find the correct wires but once I did, I was so happy with the extra sound this Sony puts out, everything was worth it.

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Exactly what I was looking for

The reviews complaining about power or lack of adjustment from this amp clearly didn't pay attention to what they were buying. This is NOT a full feature, high power amplifier. My goal was to add more power to the door speakers using the factory 8.4 Uconnect in my 2014 Ram without tearing apart the interior to run cables and keeping factory look and functionality. This fit the bill perfectly. There is a noticeable difference in the "fullness" of the sound, along with a big increase in low and mid punch. The biggest difference is at low-normal listening level. I don't have to blast the volume to wake the speakers up anymore. Install was a breeze. I spliced the amp into the stock wiring behind the head unit and used resistors to trick the Uconnect system. This amp is so small I was able to mount it inside the dash directly below the head unit which made a super easy and clean install. Highly recommended your intentions sound similar to mine. If you're expecting more, this isn't for you.

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Sony XMS400D

Super convenient if you just need a little boost.

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Great little amp

I bought this for my toy hauler trailer. The factory head unit has 3 zones, but the third zone is very low power and that happens to be the zone for my two outside speaker. This amp is perfectly made for the rv application because it has the ability to turn on with the presence of a signal (since there is no ignition signal) and also it is low power enough to splice into the line power for the head unit. This amp has an RMS 3 times as high as the third channel of my head unit and it has increased the speaker performance by as much. The speakers are much louder, far better mid and low production and can run up to full volume without any distortion.

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A good upgrade over stock

For the price and size this amp is very practical for anyone trying to get some better sound from their speakers. It is more than twice as loud as my factory radio and makes the vocals clearer and the bass deeper. Install took about an hour in my 22 Toyota Tacoma.

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Sony XMS400D

The amp itself was easy to install, however, it is not powerful enough to push the speakers ordered as an overall upgrade to my factory setup.

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Excellent

This was my first time installing an amp and after studying the manual for my receiver an amp for the wiring the install was pretty easy. First this amp is simple as it gets, at it gets the job done. I have $40 front kenwood speakers and $60 pioneers and this amp makes them sound really good, proof you don't need to splurge on more expensive speakers. Its also very small which allowed me to tuck it behind the headunit in my 94 f150. You can't tell im running an amp at all, everything is well hidden and is really cool.

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Sony XMS400D

Easy install behind radio on the firewall. Added some "pop" to my inexpensive after-market head unit. Posi-Product connectors made the hook-up a breeze.

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Sony XMS400D

Works great and easy to find a place to mount

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2012 Silverado crew cab

I was looking for a 4 channel amp to get more performance out of my Fosgate door speakers (Prime R165X3) as a simple add-on without spending a bunch of money. My aftermarket head unit (JVC KW-M740BT) just didn't have enough power to push the speakers. Installation was really simple - especially after calling Crutchfield tech support when I had a question that I couldn't find an immediate answer to. I ended up placing the amp in the small compartment above my glove box and attaching with heavy duty velcro. Now, I get all the sound that I want from my door speakers - especially mid's and high's. For low end, I have a Kicker powered sub under my rear seat. I purchased everything from Crutchfield due to their rock solid customer service. Thanks Crutchfield!!

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Sony XMS400D

Super easy install and fit behind my factory head unit! Sounds great!

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Very happy

If your tired of running rca cable's and a remote wire to the back of your car Sony xms400d is a very small and compact and will fit any place for the most part I was hesitant because of the size but the sound is very surprising at higher volumes and very clear

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Sony XMS400D

Wow great sound and love how easy this install was RE: Ford Ranger 02 400 watts BABY

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Sony XMS400D

Excellent amp for the price and size. This was easy to mount in my dash along with the headunit.

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Awesome Micro Amplifier

Amazing little amplifier! Sounds great paired with a decent volume controller/head unit. The best part is all the connections are on connectors mounted to the PCB. No pigtails so the installation bulk can be kept to a minimum. I did re-terminate the RCA connections to be male end instead of female rather than use the included adapter and another set of RCA hookup cables to reduce bulk. The connector on the RCA side is a JST PADP-10V-1-S and uses SPND-001T-C0.5 or SPH-001T-P0.5L terminals in case anyone needs that info.

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Sony XMS400D

After discovering that my head unit was not putting out enough wattage to give a good sound to the speakers, I ordered this and I am very satisfied. My Infinity Reference 6.5 speakers now sound excellent in my car and providing great mids and highs with this small form factor amplifier. Fits perfectly behind the head unit in my 1999 CR-V. Would highly recommend and Crutchfield customer service is excellent!

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Omaha

Be realistic about what you're buying and you'll be very happy. $138.00 (at the time of this review) does not buy you a large 4 channel amp pushing gobs of power, but it is a significant improvement over your stock system. Plan on replacing the speakers to realize the full benefit though, I installed mine and listened to it with factory speakers and was so un-impressed I called Crutchfield to inquire about an exchange. Installed the new speaks and it came alive. In all I spent $1K even on this entire system, all entry level stuff, and it sounds great. To get significantly better would take another $400.00-$500.00 so you can build a decent system without breaking the bank if you want. BTW, Crutchfield support was pretty great.

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Great little amp

Pleasantly surprised. Swapped out speakers on 2013 CR-V with factory radio and almost no mids. Pathetic. Bought this beca didn't want to deal with a big amp. Was able to install behind the radio and now I can't even get the volume to full without it being too loud. Clean sound and plenty of power for my needs. Relatively inexpensive and sounds great.

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Sony XMS400D

Installed in a 2010 Subaru Forester. I decided to wire it directly into the factory harness as I have the stock head unit. Relatively straightforward to install if you know which wires go to which speakers. The included wires are pretty long so I zip tied them together to make the install neater. I kept the filter settings off as it sounded like they were unnecessary with my setup (4 normal woofers and 2 factory tweeters). I have the Hertz K170 components up front and factory speakers in the back (they're next up for replacement). The amp made the K170s sing like I have never heard out of them. Sound is much "fuller", especially at higher volumes. Using a wired AUX connection, I can really heard this thing do its magic. Great purchase and just enough power to round out the improved audio I wanted out of my system. Not looking to shake the car next to me (or my car for that matter) but rather just get better sound. This amp is perfect for that.

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No brainer

What a difference! This made all the difference in my system. Highs are crisper and lows hit so much deeper and everything in between sounds immaculate!

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Sony XMS400D

yo como nopal recomiendo este pequeño moustro que ayuda a ditruibuir el sonido con una exelencia que ase trababajar el resto del systema al 100% se escucha bien perron amigos. 5 estrellitas

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Very good for simple mini amp

Solid mini amp, no frills aside from a single LP and HP filter setting, but it's better at 45watts per channel than the usual 15-20 a head-unit gives. I was expecting a bit more performance considering I initially only had 16watts per channel on my JVC stereo, but the power boost is still very noticeable with clearer vocals and instruments across the full audio range. Do recommend if you're looking for a bit more power and/or you have limited space to install. The people giving this unit 1 or 2 stars either got a defective unit, didn't install it properly or had unrealistic expectations out of what-amounts to a basic power-pack. You're not going to get teeth ratting and door shaking performance out of amplifier the size of a large bar of soap and 45watts rms.

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Sony XMS400D

I never thought possible to find something this versatile and powerful!, i did all wiring on a bench with a harness so i didnt cut any factory wires, on my f150 was a fuse dedicated to factory amp on kick panel on passenger side so i run power from there. Sounds great, my music is alive again!!

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Sony XMS400D

Made my stock speakers come alive

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Sony XMS400D

Awesome for the size pretty impressed. The hide ability is great and east to mount. Defiantly recommend

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Great Compact amplifier

This worked great with my factory head unit and upgraded Hertz speakers in my 2020 Toyota Corolla Hybrid. It test at 55-60 watts per channel RMS at 1% distortion on multiple testings on YouTube. No need for a sub. Sounds fantastic. It fit in the dash and can be tapped into existing 15 amp circuit. No need to run wires through the firewall to the battery. Very happy with the results.

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Great amp

Tiny ass amp, but the sound improvement from it is incredible. Absolutely great product.

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Simple

Small enough to fit behind my Kenwood DVD receiver in my 2009 Ford Escape. No need for amp kit as I used the factory power and ground. Connected w 1.5 ft RCA cables as it was next to the receiver and attached it with 3M Velcro.

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Sony XMS400D

I bought this based on its size and its specs. I used it to improve the audio in my 2021 Goldwing. I also upgraded the front speakers to 5 1/14 JBL's. The sound is amazing and I can hear it clearly at freeway speeds. I installed in in the saddlebag and vented the bag as per Hondas instructions. It gets warm, but I haven't had any issues. (Live in Phoenix)

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Small size, solid power

Wish it had adjustments for gain or better filtering, but for the size and power it puts out its fantastic. Wired mine up 4ch with speaker level inputs into a 64 Chevy that has a cheap HU in the glovey-which was a ton of wiring this way, but it works like a charm. Probably overpowering the speakers a bit since they're all rated 30w RMS, and some expert reviews have this amp actually putting out MORE power than it's rated at by Sony, but I don't run it often and I'm not the type to totally blast it

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Sony XMS400D

Works great for. Little extra power. Hides away in the dash

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Awesome Amp

This is awesome. Fits anywhere and sounds great! Easy install.

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Small footprint amp

Great low power amp. Easy to hook up and conceal.

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Sony XMS400D

Small enough to fit under dash, powerful enough to make my new door speakers come alive!

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Very good in my opinion!

So I wanted a small amp to fit in my 97 convertible mustang without having to run amp/ground /rca's to the trunk. I previously had a alpine power pack in my 03 mustang and wasn't that impressed. I chose this sony amp for a change of brand and the ease of installation and to also bypass the Mach 460 stock amps. I have to say I am very very impressed with this amp. Yes it's just basically a booster amp for your head unit but man does it pack a punch. I was Leary about it not having any front/back level adjustments but I bought it anyway and like I said I'm very very impressed with the sound quality to my aftermarket speakers and also the stock Mach 460 tweeters. Very glad I made this decision on top of the bad reviews. I would definitely recommend it to power your speakers and let them sing.

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Compact, powerful, and simple

Super easy to install, fit inside of my dashboard quite nicely. Only took about an hour to install and that's including resoldering my wire harness and disassembling my dash. The sound quality is very good I find myself listening at much lower volumes and still getting nice body from my speakers. Pushes my JL 6.5 coaxial speakers very nice. My only complaint of the unit is that it does not have a dedicated gain control but it is a compact amplifier at a steal of a price so you can't ask it to move mountains.

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Sony XMS400D

I'm using this app to drive 4-in JBL studios very nice for that speaker great clarity no distortion nice that it's out of the way and hidden

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To say I'm "Pleased" would be a terrible understatement

Installed this little amp in the dash of my 2016 Honda FIT. Used the speaker level inputs (as my stock head unit doesn't have RCA's). I planned to replace only the amp first, then the speakers. After doing the amp alone, I can honestly say I'm blown away! The stock setup was very weak, sounded similar to a bedside clock radio. Now I have decent bass, and clear mids and highs (on my stock speakers!). I installed this in my dash (above the glove box) as I don't care for running wires all over my car. The amp runs cool and is completely out of sight.

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terrible amp & false advertising

Absolutely garbage. Don't waste your time trying to wire this. Compact amplifier right? Making connections supeerrrr simple right? LOL that's a bunch of you know what. This amp will cause damage to your speakers & blow fuse after fuse. Save yourself a headache and just don't buy it. Go with a normal amplifier! Where you can actually control the settings & wire it in a quarters time then this bologna. "It's easy set up" call support "you have to redo all your wiring" HAHA no thanks. Never so excited to return a product to a company. Keep this junk to collect dust in Crutchfield's or Sony inventory where it belongs.

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Nice add on, ease in wiring

Added amp this to my JVC head unit. Fit behind my dash like a charm, and powered my Polk DB 6.5" speakers very well! powered it right from my OEM harness, no need to run separate power for it.

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Sony XMS400D

Tucked up under dash Excellent product

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Great mini amp

This is a reasonably priced mini amp that's doing a great job powering my Rockford Fosgate door speakers. Clean, crisp sound and fits in a small space. Great addition to a factory stereo!

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Sony XMS400D

Super small and compact. I was able to install under center console of 2018 Accord lx.

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Perfect match for my system thanks to helpful guidance

My new speakers went from good to great! The support rep helped me to find the right amp for my setup and even saved me money. The gear arrived within 2 days and even a novice like me was able to follow the instructions Crutchfield provided. Customer for life!

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Good for the job

In conjunction with the Rockford Fosgate DSR1 properly configured for my 2018 Toyota Tundra with Rockford 6 3/4 components in the doors, Ken wood mids in the dash it sounds amazing. Clear sound, no clicks when keying on the vehicle. Perfect for setting up an amp in the dash behind a stereo to power full range speakers.

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Sony XMS400D

Very good amp, added more clarity to vocals and increased instrument separation. New to car audio, but I am pleased with my purchase. I was able to mount it behind my dash.

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Nice

Really good sound from small amp

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Sony XMS400D

Easy to setup. Sounds better than I expected on my 2018 Tacoma. So small I put mine in the glove box.

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Amp in the dash!

I was able to fit this just below the Sony AX-1000 on the adapter brackets easily. I now have my amp, radio, and XM receiver in the dash with the radio. Most convenient installation ever! Love the extra power, the amp and stereo really brought my speakers to life. Even my wife noticed the difference! This may be small, but it packs a punch just the same. I now have decent bass, crisp highs and plenty of volume.

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Compact and powerful. Fits ANYWHERE

While re-doing the audio system in my 1996 Toyota LandCruiser, a friend suggested this little amp to replace the ancient behemoth that was sitting in the right rear quarter panel of the truck. I ripped out the relic of the 90's and about 40 feet of wiring and swapped it out for this compact little gem. I was able to splice the Sony harness into my factory amplifier harness and tuck the XMS400d up under my dashboard in between the heater box and metal dash frame. The sound quality is top notch, install was simple, and space savings is monumental. I recommend it to anyone that will listen.

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Great value

A lot of power in something so small. Night and day difference in my factory head unit. And it's behind the dash! Easy install for a novice.

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2014 Honda CRV LX audio upgrade

This amplifier and the replacement of my 4 in-door factory speakers with Infinity 6532's made a significant difference in the clarity and punch of my car's audio. I have the CRV LX so no factory sub. It's not window rattling subwoofer bass of course, but crisp bass with no distortion (the factory setup had muddy sounding bass). Mids and highs are excellent. The amp lays nicely down in the driver side console pocket, out of sight but easily accessible. I removed the console (googled directions) and used a 1" hole saw to make a hole in the front upper corner of the pocket for the wiring harnesses to slip into from behind the console down from the factory head unit. Ran a #12 wire w/15A fuse from the battery thru the existing firewall grommet (poked hole with coat hanger and wire bullet taped on) for power. Factory unit was only 10A circuit so couldn't tap into that. There are several handy places in the console area behind kick plate to attach the ground. Wiring harnesses supplied were plenty long. Speaker wire colors did not match so had to research. Pulled factory radio and cut existing speaker wires to splice in the amp wiring, soldered all connections and used 1/8" shrink tube. Crutchfield tech was helpful to verify correct matching of Honda wire colors with Sony wire colors. Very happy with final result. Significant upgrade for about $400.

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No crossover

No crossover adjustment Just a glorified booster amp

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Sony XMS400D

No adjustment on it for max power

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Very easy install

Super small was able to fit behind the receiver and mount with no problem.

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Sony xms400d

This little amp really makes a big difference in my car system .I got it on the 4 channel mode with my pioneer head unit and 4 cerwin Vagas speakers and its pumping.really

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Mini amp

Great amp not much powerful then aftermarket head unit no options to bridge are run on 2ohms

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Freightliner Cascadia

Powerful amp for the size got hooked to the Sony xa100 and four morels speaker From phenomenal sound for just 45 W to channel it is mine blowing

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Sony XMS400D

Works great on 4 JBL concert series speakers in a Toyota Sienna. Easy to install.

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Impressive

Works great. Fits behind the dashboard. Powers 4 x 60 watt RMS 2 way 6-1/2 in. speakers with ease. Now I can really hear the music with the top down. No distortion at higher volumes.

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Big performance in a small package.

Simple installation, compact for a nice fit behind my Polaris Slingshot aftermarket stereo. I added the amp to help drive ssv speakers in ssv side pods and kicker component speakers in the factory floor side pods. Inexpensive with very good performance.

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Highly recommended

Nice, simple little amp that drives my front components and my rear coaxials. Made a significant difference in sound quality verses driving them off of just head unit power. 10/10

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Just get a regular amp.

Just buy a regular amp unless this is absolutely the only option. Not a big improvement for the effort. I feel like I threw away the money that should have went towards something better. Live and learn.

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