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Samsung 55-inch MU640x Series

alaTest has collected and analyzed 701 reviews of Samsung 55-inch MU640x Series. The average rating for this product is 4.7/5, compared to an average rating of 4.3/5 for other TVs for all reviews. Reviewers are impressed by the design and price. The sound and usability also get good feedback, but many are negative about the tuner.

image quality, usability, sound, price, design


We analyzed user and expert ratings, product age and more factors. Compared to other TVs the Samsung 55-inch MU640x Series is awarded an overall alaScore™ of 93/100 = Excellent quality.

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Review analysis

(Based on 701 reviews)

Expert Reviews  

User Reviews  

Showing 647 review(s)

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Showing 1 - 10 of 647 Show Reviews: in English | in other languages (54)

Expert review by (

Samsung UE55MU6400 review

  (Rating Hidden)

The combination of a big 55-inch screen and a more affordable price tag has made the Samsung UE55MU6400 a popular TV over recent years. It offers features found on TVs more than twice its price, but how did it fare in the lab? Find out in our full review.

Jun, 2017

Consumer review (

Fantastic smart tv


Very easy to set up. Great tv. Children able to use easily too.

Jun, 2018

Consumer review (

Help is at hand with Putting the Customer First.


I bought a LG 55 inch tv to replace my raging Panasonic 50 inch plasma, i initially though the tv was okay but was a bit disappointed with the picture which seemed to have a milky type picture, and convincing myself that it was okay, when i visited my...

Jun, 2018

Consumer review (

Good tv. Amazing price


After a week's use, very pleased. Picture and sound are good. Slim design is excellent

Jun, 2018

Consumer review (

Great picture and really good Smart interface


I was going to buy a much cheaper TV but phoned up to ask why it was so much cheaper. The shop man explained it to me and suggested I pop in to see for myself. It was well worth the extra, picture is super sharp and colourful and it's one of the best...

Jun, 2018

Consumer review (

Great service great price


Before baying tv did some research on line and richersound came cheapest and with 6 years guaranty no brainer. Went to shop i Leeds staff was very helpful and polite ober all great service you could not ask for more

Jun, 2018

Consumer review (

Sparkling colours and definition.


Had for 2 weeks now and couldn't be more pleased. Easy to set up and control. Looks smart and gives such a rich picture it's almost like 3d. All this for such a great price.

Jun, 2018

Consumer review (

Great picture


The TV was well packaged, easy to set up and the picture quality is excellent. Very happy with the purchase.

Jun, 2018

Consumer review (



Perfect TV! Thin build, solid and beautiful design. Crisp clarity and bright. Fast processor speeds allows switching between apps fluid. Netlix and Amazon 4K shows how well the TV can handle itself. Didn't know I was able to connect my Sonos systems...

Jun, 2018

Consumer review (

Stunning TV


Have been using this TV for about 6 weeks now and have not been disappointed in it's quality at all. It's my first HDR Smart TV and Samsung is my number one choice for technology and once again they have excelled. The TV is stunning to look at with...

Jun, 2018

Product Specifications


Audio decoders:DTS / DTS,Dolby Digital
Audio decoding technologies:Dolby Digital Plus
Audio system:2.0
Auto volume leveler:Y
Built-in speaker(s):Y
Built-in subwoofer:N
Multiroom audio technology:Samsung Multiroom Link
Number of loudspeakers:2
Number of Speakers:2
RMS rated power:20


Digital Living Network Alliance (DLNA) certified:Y


Color of product:Black, Silver
LED Indicators:Power / Y
Year of production:2017


Aspect Ratio:16:9
Display Diagonal:55
Display Diagonal (metric):54.3
Display Resolution:3840 x 2160
Display Technology:LED
Dynamic contrast ratio marketing name:Mega Contrast
HD type:4K Ultra HD
Motion interpolation technology:PQI (Picture Quality Index)
PQI (Picture Quality Index):1500
Screen format adjustments:4:3, 16:9
Screen shape:Flat
Supported graphics resolutions:3840 x 2160
Supported video modes:2160p / 720i,720p,1080i,1080p,2160p


On/Off switch:Y
Smartphone remote support:Y
VESA mounting:Y
VESA mounting interfaces:400 x 400

Management Features

Auto power off:Y
ECO mode:Y
Electronic Program Guide (EPG):Y
Number of OSD languages:27
On Screen Display (OSD):Y
On/Off timer:Y
Sleep Timer:Y
Smart modes:Game, Movie


Bluetooth profiles:HID
Ethernet LAN:Y
Web browser:Y
Wi-Fi Direct:Y

Other Features

Dimming type:Supreme UHD / UHD Dimming

Packaging Content

Batteries included:Y
Cables included:AC
Desktop stand:Y
Handheld remote control:Y
Mounting kit:Y
Remote Control Type:SMART / TM1750A
Warranty card:Y

Packaging Data

Package depth:7.56
Package height:32.2
Package type:Box
Package weight:53.1 / 55.8
Package width:55.9


4K upscaler:Y
Auto Depth Enhancer:N
ConnectShare (HDD):Y
ConnectShare (USB):Y
Digital Clean View:Y
Extended PVR:Y
Game mode:Y
HDMI Quick Switch:Y
High Dynamic Range Imaging (HDRI):Y
Instant On:Y
Local dimming:N / Y
MBR support:Y
Nano Crystal Color:Y
Peak Illuminator Pro:N / Y
Picture processing technology:Samsung Auto Motion Plus,Samsung Contrast Enhancer,Samsung Ultra Clean View / Samsung UHD Up-Scailing
Plug and Play:Y
Processor cores:4
Quantum dot color technology:N
Satellite Channel Router (SatCR) compatible:Y
Subtitle formats supported:TXT
Subtitles function:Y
Teletext function:Y
USB recording:Y
Voice control:Y

Ports & interfaces

Audio Return Channel (ARC):Y
Common interface (CI):Y
Common interface Plus (CI+):Y
Common interface Plus (CI+) version:1.3
Component video (YPbPr/YCbCr) in:1
Composite video in:1
Consumer Electronics Control (CEC):Anynet+
Digital audio optical out:1
DVI port:N
Ethernet LAN (RJ-45) ports:1
HDMI ports quantity:3
One Connect port:N / Y
PC in (D-Sub):N
RF ports quantity:1 / 2
RS-232C ports:1
USB 2.0 ports quantity:2


AC input frequency:50/60
AC input voltage:220 - 240
Annual Energy Consumption:154
Energy efficiency class:A
Energy saving mode:Y
Power consumption (max):170
Power consumption (standby):0.5
Power consumption (typical):111

Smart TV

Hybrid Broadcast Broadband TV (HbbTV):Y
Hybrid Broadcast Broadband TV (HbbTV) version:1.5
Internet TV:Y
Lifestyle apps:Samsung Smart View
Music apps:Deezer, Spotify
Screen mirroring:Y
Smart TV:Y
Video apps:Amazon Prime Video,NetFlix,YouTube

Technical Details

LED backlight:Y

TV Tuner

Auto channel search:Y
Digital signal format system:DVB-C,DVB-S2,DVB-T / DVB-C2,DVB-S2,DVB-T
Number of tuners:1
Tuner Type:Analog & digital

Weight & Dimensions

Depth (with stand):13.2
Height (with stand):30.9
Package depth:7.56
Package height:32.2
Package weight:53.1 / 55.8
Package width:55.9
Weight with stand:41.9
Width (with stand):48.6