






🚗 Elevate your drive with sound that moves you—JVC KW-X840BTS, where simplicity meets smart tech.
The JVC KW-X840BTS is a Bluetooth-enabled double DIN car stereo receiver featuring a 1.5-line display, 13-band equalizer with digital time alignment, and the ability to connect up to five Bluetooth devices simultaneously. It supports hands-free calling, audio streaming, and Amazon Alexa voice control, while its 1.5A USB port charges devices quickly. Designed for easy installation and user-friendly operation, it delivers 50 watts of power with advanced sound customization to enhance your in-car audio experience.
| ASIN | B0828B9449 |
| Audio Output Mode | Stereo |
| Audio Output Type | External |
| Best Sellers Rank | #108,590 in Electronics ( See Top 100 in Electronics ) #1,655 in Car Audio Receivers |
| Brand | JVC |
| Built-In Media | JVC |
| Compatible Devices | Smartphone |
| Connectivity Technology | Bluetooth, USB |
| Connector Type | 3.5mm Jack , USB |
| Control Method | App, Touch |
| Controller Type | Amazon Alexa, application |
| Customer Reviews | 4.3 out of 5 stars 763 Reviews |
| Format | WMA |
| Item Dimensions D x W x H | 17"D x 15.25"W x 9.75"H |
| Item Height | 9 inches |
| Item Weight | 2.4 Pounds |
| Manufacturer | JVC |
| Model Number | KWX840BTS |
| Number of Channels | 6 |
| Other Special Features of the Product | Equalizer |
| Output Power | 2.5 Volts |
| Output Wattage | 50 Watts |
| Special Feature | Equalizer |
| Supported Internet Services | Pandora, SiriusXM, Spotify, iHeartRadio |
| Surround Sound Channel Configuration | 2.0 |
| UPC | 046838080753 |
| Unit Count | 1.0 Count |
| Warranty Description | 1-Year Manufacturer Warranty |
| Wattage | 200 watts |
| Wireless Technology | Bluetooth |
R**S
Ain’t nothing wrong with it
Excellent unit for the price! Hade it two years, sounds great, Bluetooth works well, it’s user friendly. And most of all it’s not over-the-top. It’ll sync right up with your Spotify, Apple Music, and Pandora even though it doesn’t have touchscreen with apps. I love it!
J**.
Got this after going through many other car stereos. Happy Camper!
Sheesh! After trying multiple other head-units (Android, Carplay, Android Auto etc.) I went back to my original "Mission Statement" - KEEP IT SIMPLE! This JVC does exactly what I wanted it to do and is very customizable on top of that! Sounds and features and even the phone works great through the Mic. Very impressed with this. Don't spend lots of $$$ on a high-end unit. (Well you can... but...) This JVC is very easy to use. - Especially in this day and age of touch-screen madness. I'm very happy with my choice. Simple to install and the directions are very good. Happy that some company still makes a car stereo that "Keeps things simple" and sounds great. I'm glad I came back to this one as it was my first choice to begin with! Great Stereo. UPDATE: One slight negative that appears during the day - The center display (Time, stations, Channel and info.) gets washed-out by the sunlight. Very hard to see and the settings are at "Maximum Brightness". At night it's great... Very visible. Daylight is very difficult to see.
S**L
Good value stereo
Got this stereo to replace my wifes 2008 Nissan Altima 2.5S factory unit. It sounded good, better than my 2008 Honda Accord V6 EXL stereo with a "subwoofer". I got aftermarket for that, amped and loud, but with many many car specific issues. Anyway, the Nissan stereo started having blank screen, partial text screen, can't change station, etc So I got this due to price. First double din, wanted for wifes ease of seeing it while driving. I used factory speakers, Scosche wiring adaptors (antenna also) and the Metra dash adapter. Wasn't terrific, but not as bad as some reviews lead it to be (I had to use a blade, file, and some glue). Stereo is good, a bit cheezy for me but wife likes it. My one issue is the antenna. Nissan (unsure of the new ones) uses an antenna in the back window with a powered unit to boost it in the rear passenger pillar. I didn't connect it, just used the rca style male to the back of the unit. Radio had one channel. I had to open it back up (cracked the shroud around the vents) and connected the blue/white stripe wire to the antenna adapter blue. The blue from stereo adapter to blue antenna adapter doesn't work. The wire is labeled P conn/ant P or something like that. The other is blue with yellow stripe and says remote. So in short, the blue antenna to blue with white stripe is the combo. Test the stereo first before you put it all back, lol This was my only hiccup though. Bluetooth mic sounds good for calls. It has the external one you put in the front A pillar for drivers side. AUX jack behind stereo, so run it left, behind the steering wheel and other junk, pull off that small panel on side of dash and run wire out, then up the pillar. I tucked into it, didn't take it off, but I got it dirty with my "inside the dash" dust (sorry babe). Clean your hands or put on gloves and tuck in with a clean flat head, putty knife, etc. Sounds good with factory speakers, bass on them is not bad for factory, but don't blow them. Now to figure out how to change the head unit color...so many tweeks but unsure how to make them stick. Haven't tried CD, but used Pandora and it was good. Calls are good also. Could have more descriptive info included, but will have to dink around with it. Again, probably better ones out there, but for good value stereo replacement on and older car...you can't go wrong with this!
F**Z
Great stereo
Great Stereo been installed for a couple years still works like new, love the color changing on it and also does its job easy install. Very great quality
B**A
Din 2 radio
It great , music comes out beautiful.
B**.
Unbeatable value
I won a 100 gift card at work about 6-7 years ago,used it for this and just decided to give my review on this, as I was scrolling through old purchases. I put this in my Genesis coupe and it has been very good for a long time. Not the best, but you cannot beat it for the price. Kenwood owns JVC, and they've always made great decks.
K**A
Looks great
Mostly got this because it looks good, but it also works great. I don’t play around with the settings too much, but the bass adjusts great. I wish it came with a frame (not quite sure what you call it) so it would look more flush in my 2000 4Runner. I probably would have to contact a car stereo website to find the right one.
T**.
Would NOT buy again.
Not my favorite, but it's working after some tweaking with the grounding wire. My next one will have a backup camera. Price was good, but I'll spend more next time. Throws random error code from time to time. Turning it off and on usually fixes it. I'll run it until it fails, then upgrade. Phone mic works great.
Trustpilot
2 weeks ago
2 months ago