When comparing Samsung MU7000 Series 40" (UN40MU7000) vs LG B7A OLED 55" (OLED55B7A), the Slant community recommends LG B7A OLED 55" (OLED55B7A) for most people. In the question“What are the best TVs?” LG B7A OLED 55" (OLED55B7A) is ranked 4th while Samsung MU7000 Series 40" (UN40MU7000) is ranked 30th. The most important reason people chose LG B7A OLED 55" (OLED55B7A) is:
The B7A is the perfect choice for HDR content. On top of its exceptional picture quality with perfectly deep blacks, it has everything essential to an excellent HDR experience: an OLED panel, wide color gamut, and high peak HDR brightness levels. Shadow details are perfect and highlights are really stunning, making for an immersive experience. The OLED panel can manipulate pixels individually, which means it has control over every tiny bit of the picture. The panel can also reproduce the colors necessary for true HDR, and these colors will really pop thanks to its high peak brightness level of ~700 nits.
Ranked in these QuestionsQuestion Ranking
Pro Great well-rounded option
The MU7000 is a great well-rounded option for watching movies, gaming, and sports. Its picture quality is decent, it has low input lag and low motion blur, and the screen uniformity is great. It can also be used as a PC monitor.
Pro Remote has a voice command feature
The MU7000's remote has a voice command feature that can perform actions as you physically would with the remote, and it can even be used to adjust settings directly.
Pro Intuitive user interface
The MU7000 runs on the Tizen smart platform, known for its simplicity and intuitiveness.
It’s easy to navigate and access all the functions of features of the TV - the whole menu of the Tizen OS is organized around a menu known as the “Smart Hub” which contains everything: apps, settings, input switching, etc.
It also has a section for quick access to frequently used items.
Pro Decent for casual movies/TV watching
The MU7000 is a decent pick if you're a casual viewer. You'll get a great 4K/SDR experience, but the HDR performance might be lacklustre due to the lack of local dimming and low HDR peak brightness.
Pro Decent for gaming
The MU7000 is decent for gaming thanks to the fairly low input lag and barely noticeable motion blur. Its input lag of ~20ms contributes to a responsive gaming experience, and the panel's response time of ~20ms means it can handle motion fairly well - most don't notice any visible trails behind fast-moving objects.
Pro Can be used as a PC monitor
The MU7000 is suitable as a PC monitor because of its relatively small screen size of 40". It can be used up front thanks to the small minimal viewing distance, and it has full 4:4:4 color support that ensures text or shapes with clear, hard edges are not blurry.
Pro Decent picture quality
The MU7000 looks good with really deep black levels and sufficient peak brightness levels for most content.
Dark scenes look amazing thanks to the panel’s contrast ratio of roughly 6300:1, which means it’s capable of producing blacks that are 6300 times darker than the brightest white pixel the screen can produce.
It gets bright enough for SDR content with a peak brightness level of ~350 nits, which is sufficient for making colors pop.
The best viewing experience will be in a dark environment where the panel won’t have to compete with light as the MU7000’s screen can’t get bright enough to perform as well in bright environments.
Pro Perfect for HDR content
The B7A is the perfect choice for HDR content. On top of its exceptional picture quality with perfectly deep blacks, it has everything essential to an excellent HDR experience: an OLED panel, wide color gamut, and high peak HDR brightness levels.
Shadow details are perfect and highlights are really stunning, making for an immersive experience. The OLED panel can manipulate pixels individually, which means it has control over every tiny bit of the picture.
The panel can also reproduce the colors necessary for true HDR, and these colors will really pop thanks to its high peak brightness level of ~700 nits.
Pro Great at handling reflections
The B7A is great at handling reflections. It can fight glare pretty well in bright environments, thanks to its anti-reflective coating on the panel.
Pro Interface is intuitive and user-friendly
The B7A runs on the webOS smart platform, known for its intuitive and fully customizable UI. It’s built around a Launch Bar that provides quick and easy access to the TV's apps, settings, and inputs. This can be customized and re-organized to the user's liking.
Pro Wide viewing angle
The B7A looks good from almost any angle thanks to its OLED panel, making it a great choice if you usually watch the TV with large groups of people.
Its viewing angle is wide enough for a group of audience to experience more or less similar picture quality when watching from multiple angles off the center of the screen. The black levels and brightness only starts degrading at ≥75°, which means the picture quality will stay roughly the same no matter which angle the screen is viewed from.
Pro Great color reproduction
The B7A can reproduce a really broad range of colors that are crucial for HDR, which also means it has zero issues with SDR colors.
It’s capable of reproducing ~70% of the standard colors for 4K HDR, the Rec. 2020 colorspace. This is one of the highest in the 4K TVs market.
It can also display these colors at different brightness levels accurately that conveys much more HDR details than its direct competitors can.
Pro Extremely versatile
Apart from games, the B7A is great for movies and sports. Its top-notch picture quality, combined with the features it offers, makes it perform really well across different kinds of use cases.
Movies look excellent thanks to the exceptional picture quality, and it’s also a great pick for watching sports because the motion blur is non-existent and the panel is really uniform.
It has near-perfect pixel response time of ~1.0ms, resulting in virtually no motion blur, so fast-moving objects like football don’t leave any trails on the screen. The panel is also uniform enough that it has no issues with displaying large, same-color objects on screen, like football fields.
Pro Good value for money
While the B7A can seem rather expensive, the picture quality and features it offers is top-of-the-line and can’t be beaten. The performance easily outclasses all other TVs in this price bracket.
Pro Suitable as a computer monitor
The B7A can display clear and crisp images from a computer thanks to its full 4:4:4 color support. Because of this, text or shapes with clear, hard edges won’t be blurry.
Pro Excellent at handling dynamic content
The B7A can display extremely fast-moving objects smoothly without any blur or lag, thanks to its OLED panel that has near-perfect pixel response time of ~1.0ms.
Pro Excellent for gaming
The B7A is excellent for gaming thanks to its really low input lag and near-perfect pixel response time that gives it virtually no motion blur.
It’s perfect for all types of games, even fast-paced action games. The experience will be really responsive and fluid. Players will have no issues keeping their actions in sync with what’s on the display thanks to the really low input lag of ~20ms, and fast-moving objects won’t leave any trails on the screen because the panel has a response time of ~1.0ms - it can fully change its pixels color in that tiny amount of time.
Pro Remote is well-designed
The B7A comes with LG's Magic Remote, touted for its easy-to-use design.
It works similarly to a Nintendo Wii remote where the on-screen cursor follows the remote's movement, making it easy to navigate the UI and select menu items.
The remote also has a built-in microphone for the voice command feature, which also supports content searching with voice input.
Pro Excellent for HDR gaming
The B7A’s input lag remains low at ~20ms even when gaming in 4K @ 60Hz + HDR, making for an really immersive and responsive HDR gaming experience.
Pro Smart platform has great ecosystem of apps
The B7A runs on the webOS smart platform. It has a great ecosystem of apps, ranging from media streaming services (Netflix, Amazon, YouTube, etc.) to third-party apps. Support for these apps are also first-class with up-to-date features and good performance; for instance, the YouTube app supports 360-degree video playback.
Pro Exceptional picture quality
The B7A's picture quality is top-of-the-line. It has an OLED panel that gives it infinite contrast ratio, excellent screen uniformity, high peak brightness, wide viewing angle, and great handling of reflections.
Thanks to that, it can reproduce blacks perfectly and the uniformity is top-notch - they’re truly dark and even, because the OLED panel has the ability to manipulate pixels individually.
Colors really shine and look true-to-life, thanks to the peak brightness levels peak of ~400 nits for SDR & ~700 nits for HDR.
The picture quality also doesn't suffer from much deterioration when viewed from any angle because the panel has a really wide viewing angle. It’s also capable of maintaining the same picture quality in bright environments, thanks to its high peak brightness levels and great handling of reflections.
Con Pretty expensive for a 40" TV
Other similarly priced TVs are 49" and above, while this specific model of the MU7000 (UN40MU7000) is only 40".
Con Glare might be an issue
The MU7000 might not be able to handle environments with lots of light, such as sunlight pouring into a living room with no curtains. Its panel is only average at handling reflections, and the brightness levels peak at ~350 nits which isn't really sufficient for fighting glare.
Con Speakers produce distortion at high volumes
The MU7000's speakers produces distortion that starts getting noticeable at around ≥40% of max volume.
Con Not suitable for group watching
The MU7000 has a narrow viewing angle that makes it unsuitable for group watching.
Audience sitting away from the center of the screen will not experience the same picture as those sitting in the center, because the picture quality starts to deteriorate significantly when viewing from just ≥20° away from the screen's center.
Con Might require some color calibration out of the box
The MU7000's colors might look off to some viewers out of the box due to its high white balance. Switching to the "Movie" option in "Picture Mode" should be enough to remedy this for most, but only calibration can fix this for some viewers.
Con Interface has ads
There are ads that can't be removed on the MU7000's interface.
Con Lacks support for Dolby Vision
The MU7000 currently supports the HDR10 format only.
Con HDR performance is lacking
The main drawback of the MU7000 is its HDR performance.
While it has a wide color gamut that allows it to reproduce the wide range of colors necessary for true HDR playback, it can’t get bright enough to take advantage of it. At only ~300 nits of brightness, it's pretty hard for HDR pictures to pop.
It also doesn’t have local dimming, so its black levels can’t be improved further for better HDR performance.
Con May require some color calibration out of the box
Out of the box, the B7A’s white balance might look slightly off to some viewer, so a brief calibration might be required if you notice it. Fortunately, all the optimal color settings are available on the internet and isn’t hard to find.
Con Interface has ads
The B7A's interface includes ads that can’t be removed - there’s no option to disable it. Ads on this TV can be really annoying when compared to other smart TVs because they're almost everywhere. There are video ads in LG's Content Store, apps menu, and even voice search results.
Con Below average sound quality
The sound quality of the B7A's built-in speakers is below average. It can't get very loud with the max volume peaking at ~85db, and sound quality it offers does not match the picture quality.
Con Suffers from image retention issues
The main drawback of OLED panels are image retention issues with static images - pixels on the panel gets burned in when the picture doesn't change for extended periods of time. This usually happens with content that has a static image anywhere on the screen, like the logo of TV channels.
As the B7A has an OLED panel, it unfortunately suffers from this problem. There might be some retainment of artifacts for ~15 minutes when this happens, and it usually goes away after watching other content without static images.
There are some cases where normal content won't cut it, which usually happens when the static image has been there for more than some hours. Fortunately, the B7A has a “Pixel Refresher” feature that can recalibrate the screen, which should get rid of any remaining artifacts.