- Matching (Score) |
- Our verdict |
- Competing TVs |
- TV appearance |
- Where to buy |
- Contrast and black detail |
- HDR effect quality |
- Factory color reproduction |
- Color reproduction after calibration |
- Smoothness of tonal transitions |
- Image scaling and smoothness of tonal transitions |
- Blur and motion smoothness |
- Console compatibility and gaming features |
- Input lag |
- Compatibility with PC |
- Viewing angles |
- Daytime performance |
- TV features |
- Apps |
- Playing files from USB |
- Sound |
- Panel details
TCL A400U Review
A400U / Premium Wallpaper
Available screen sizes:
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Panel type: LCD VA Refresh rate: 144Hz Brand: TCL Resolution: 3840x2160 System: Google TV Model year: 2026
This review is an English translation of the Polish original. Read the original on Wybierz.tv.
TCL has significantly expanded the A series this year, the line of TVs designed to also serve as a decorative element in the interior. The manufacturer calls them "Wallpaper TV", suggesting a screen intended to blend into the wall. One of the new models is the TCL A400U, which at first glance does not resemble the typical models that try to mimic a picture in a frame. Instead, it features full-fledged Mini LED backlighting, so the design is matched by substantial capabilities. We checked whether the A400U has anything to offer beyond an attractive appearance!
TCL A400U - Our verdict
7.8
Overall rating
Is it worth buying the TCL A400U? Yes, because it’s one of those TVs where paying extra for a higher series doesn’t always make sense. In films you get what you normally expect from a good TV: very good blacks, a strong HDR effect and a natural picture, especially after calibration. Brightness won’t be lacking during the day either, although because of the glossy panel it’s better not to position it opposite a large window. The whole package is completed by a slim, well-made casing. The A400U doesn’t mimic a picture-on-the-wall as convincingly as some “wallpaper” TVs, but as an elegant living-room model it looks very good.
Buying it, you don’t have to choose between a TV for films and a screen for gaming. The A400U supports 4K at 120 Hz, including in Dolby Vision, and low input lag keeps controls quick and responsive. With a PC you can even use 144 Hz at 4K or 288 Hz in Full HD. That’s a level of capability at which it’s hard to justify paying more for a pricier model purely for gaming features. In everyday use the TV doesn’t disappoint either. Google TV runs smoothly, apps launch without annoying delays, and using the device is simply convenient.
That doesn’t mean the A400U will suit every home. If you often watch broadcast TV or other lower-quality material, the Pentonic 700 processor won’t always improve it as much as you might expect. The slightly more expensive C7L has a similar limitation, so only moving up to a clearly higher series, such as the C8L, brings a noticeable change in this regard. Before buying it’s also worth checking how many devices you want to connect. Two HDMI 2.1 inputs, one of which is taken by eARC, may prove insufficient if you have two consoles and a soundbar. It’s sensible to include a soundbar in the budget anyway, because the built-in speakers clearly don’t match the capabilities of the picture.
However, if you’re mainly after a TV for films, streaming and gaming, the TCL A400U is one of the most convincing mid-range buys of 2026. More expensive models can do more, but not every one of those advantages will matter during everyday viewing. Here you get a very good picture, extensive features and excellent build quality, without having to pay for functions you may never see. That’s why the TCL A400U is, in our view, one of the most cost-effective TVs of 2026.
Advantages
Excellent value for money
Very good black levels and high contrast thanks to Mini LED backlighting and a VA panel
High brightness delivering impressive HDR and comfortable daytime viewing
Accurate image reproduction after calibration
Extensive gaming features: VRR, ALLM, low input lag
High refresh rates up to 144 Hz at 4K and 288 Hz at Full HD when connected to a PC
Google TV with a wide selection of apps
Slim, flat casing and very good build quality
Disadvantages
Poor digital image processing due to the use of the older MediaTek Pentonic 700 processor
Only two HDMI 2.1 inputs, one of which is shared with eARC
The glossy screen does a poor job of suppressing reflections
Limited viewing angles
Flat sound
Movies and series in UHD quality7.5
Classic TV, YouTube7.3
Sports broadcasts (TV and apps)7.0
Gaming on console8.8
TV as a computer monitor8.5
Watching in bright light8.5
Utility functions7.8
Apps9.6
Sound quality6.7
Complete the survey to find out what fits your preferences
TCL A400U - Competing TVs in this price range
TCL A400U - TV appearance
HDMI inputs: 2 x HDMI 2.0, 2 x HDMI 2.1 (48Gbps) Outputs: Toslink (Optical audio), eARC (HDMI), ARC (HDMI) Network Interfaces: Wi-Fi 2.4GHz, Wi-Fi 5GHz, Ethernet (LAN) 100Mbps
Build quality: Premium
Stand type: Central
Bezel color: Graphite
Stand: Height adjustment
Flat design: Yes
Accessories: Stand
In our view the TCL A400U is hard to call a fully fledged television that mimics artwork, like the A400 Pro, Samsung The Frame or Hisense Canvas TV. It doesn't have interchangeable decorative frames and, from the front, it rather resembles a classic, elegant Mini LED television. The narrow bezel and simple central stand still look very good. In terms of build quality the A400U feels like one of the pricier ranges, and visually we even prefer it to the higher-positioned C7L. Of course, that's a matter of taste.
What stands out most is its very slim, flat case. At the back you won't find the typical, protruding electronics hump; instead there are dedicated recesses for a wall mount. Thanks to that design the TV can be mounted close to the wall, and that's when its appearance can make the biggest impression. It's a pity the mount isn't included as standard, although there are promotions where the manufacturer adds it for free. You could jokingly say the "A" here stands for "absolutely flat" rather than "artistic".
You can also see that someone thought about practical details. At the back there are cable guides that help organise the wires and hide them within the housing. For placing it on a cabinet you get a central stand with height adjustment, useful for example when you want to put a soundbar under the screen. As a television intended to mimic a framed picture or wallpaper the A400U doesn't entirely convince us, but as a well made, slim living-room screen it really looks great.
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TCL A400U - Contrast and black detail
8/10
Local dimming function: Yes, number of zones: 576 (18 x 32)
Result
170,250:1
Result
41,700:1
Result
24,500:1
Result
22,550:1
Result
8,550:1
The black in the TCL A400U performs excellently, even surprisingly so. The 65-inch sample we tested uses 576 local dimming zones, which effectively separate bright objects from a dark background. In most of our scenes the contrast ratio ranged from about 22,500:1 to 41,700:1, and in the most favourable shot it exceeded 170,000:1. That gives the image very good depth in the evening, and the blacks do not resemble the grey glow common to ordinary LCD screens without local dimming. Interestingly, the C7L we tested in the same size had over 1,000 zones, yet the contrast results were very similar, in places even worse. The A400U therefore shows that the number of zones alone does not determine the effect. Equally important is how the TV controls them, and here TCL has done a very good job.
Of course there are scenes in which the backlight reaches its limits. When a lot of small bright elements appear on a black background, you can notice a halo effect around them, a luminous rim. The zones cover too large an area to illuminate every such detail without brightening its surroundings. In our most difficult shot the contrast fell to about 9,000:1, but even then it did not look bad. It is not perfect black in every situation, however for most of a viewing session the A400U gives plenty of reasons to be pleased in this respect.
Halo effect and black detail visibility:
TCL A400U - HDR effect quality
6.1/10
Supported formats: HDR10, HDR10+, Dolby Vision, Dolby Vision IQ, HLG
Luminance measurements in HDR:
Result
1226 nit
Result
264 nit
Result
636 nit
Result
217 nit
Result
1434 nit
TCL A400U can deliver very strong HDR. On test patterns peak brightness reaches around 2000 nits, and in brighter film scenes we measured from about 1200 to over 1400 nits. Those are very good figures, translating into intense sun reflections and a noticeable glow on bright parts of the image. In such shots there is little to complain about in terms of power. It is not always equally dramatic, though. When small lights appear on a dark background the algorithm has to decide how much to illuminate the zones that contain them. Higher brightness would also mean a more visible halo around objects, so the A400U opts to preserve deep blacks. In our toughest scenes the small lights therefore reached only about 220 to 260 nits. They remain visible, but lose the intensity we would expect from such a bright TV. It is a compromise typical of many Mini LEDs in this price range. The backlight has plenty of power, but the number of zones limits how precisely it can be used. You can also see the C7L's advantage here, which, thanks to a greater number of zones, can render some of those elements brighter.
Colours
Colours perform well, though they do not achieve the same saturation as the new SQD Mini LED models. The A400U uses a PFS phosphor and covers roughly 94% of the DCI-P3 gamut and 74% of BT.2020. In HDR films this yields rich, well-saturated tones. DCI-P3, which contains most of the colours used in them, is almost fully covered. Some shortcomings are most evident in the most saturated greens. They will not be as intense as on screens able to display a wider gamut, but in most films it will be hard to notice. The difference is easier to spot in games with heavily saturated, neon colours that often exceed the panel's capabilities.
BT.2020 color gamut coverage and primary color luminance
| Data set | BT.2020 | P3 | R | G | B |
|---|---|---|---|---|---|
| Synthetic patterns | 74.3% | 93.6% | 61% | 58% | 63% |
| Film measurements | 74.3% | 93.8% | 74% | 78% | 80% |
BT.2020
BT.2020 and P3 – average color gamut coverage (percent of the target gamut).
R, G, B – average primary color luminance relative to target (percent).
Scene from the movie “Pan” (about 2800 nits)
Scene from the movie “Billy Lynn” (about 1100 nits)
The TCL A400U handles tone mapping of HDR films to the display's capabilities very well. This matters because a film can contain highlights that are much brighter than the TV can reproduce. The image then needs to be adjusted so that details are preserved in those areas without changing the overall look of the scene. The A400U does this well, even very well. Bright elements have the right sparkle, but faces, backgrounds and shadowed areas do not become overly bright in the process. You can see this in a scene from Billy Lynn's Long Halftime Walk, where brightness reaches around 1100 nits. The fireworks behind the protagonist are intense, but you can still tell their individual elements apart. The face and uniform do not look as if they have been artificially lit. An even tougher test is a scene from 'Pan', reaching around 2800 nits. The A400U can no longer reproduce that brightness fully, but it can preserve the differences between tones around the sun. Instead of a large white blotch we get visible transitions between the light, the sky and the clouds. Thanks to this, both shots look very similar to the image from the reference monitor we use as our standard. Peak brightness control helps achieve this kind of film reproduction. Its role is not simply to increase or decrease backlight power. It also lets you fine-tune how brightly the TV renders particular parts of the image so it does not brighten them more than intended in the source material. In the C-series models we tested that option was greyed out and unavailable to the user. On the A400U it is available, giving greater control over the final result.
HDR luminance chart:
The A400U already performs well in HDR10, and with Dolby Vision content it can also use scene-by-scene brightness metadata. This makes it easier to preserve detail in the highlights, rather than wash them into a uniform patch. In the scene with the horses the difference is small, because HDR10 already shows the texture of the snow and the trees in the background clearly. Dolby Vision subtly refines these elements, but does not completely change the picture's appearance. That is a good sign, because it means films available only in HDR10 do not lose much here either.
Static HDR10
Dynamic: Dolby Vision
Factory color reproduction
6.2/10
In its factory settings, Filmmaker mode on the A400U performs quite well, especially for regular TV and SDR films. However, there is a slight lack of red. Whites therefore have a faint greenish cast and faces can look a little too pale. It is not strongly noticeable in every scene, but in shots with a lot of white or red the tint is easier to spot. There are also small luminance inconsistencies. Dark areas are slightly lifted, while some brighter tones are overly subdued. It is perfectly watchable, though there is room for improvement.
There are more comments regarding HDR. Out of the box the TV brightens the image too much, which is clearly visible on the EOTF chart. This is not about highlights such as the sun or lamps, which should be intense. Faces and surroundings also become brighter, when in the film they were meant to look more restrained. As a result the scene loses some depth and looks as if someone had cranked up its brightness. On top of that the brightest whites tend to take on a slightly cool hue. The most needed change is therefore to tidy up HDR rendering, because in its factory Filmmaker settings the A400U adds “more” than it should.
Color reproduction after calibration
8.9/10
The TCL A400U responds very well to calibration and allows most of the shortcomings of the Filmmaker mode in factory settings to be corrected. In SDR it was possible to almost perfectly correct the white balance. The lack of red has gone, so whites and greys no longer have a greenish tint and faces have regained a natural look. Brightness rendering has also improved. Apart from minor deviations in the darkest and brightest parts, the TV sticks to the reference, without unnecessary brightening or dimming of the image.
The most important change, however, concerns HDR. Thanks to the available peak brightness adjustment, the brightening seen in the factory settings could be tamed. Measurements in film scenes, not just on test patterns, confirm this. Faces and backgrounds are no longer artificially overlit, while bright elements still retain the appropriate intensity. Errors in the Color Checker test in HDR are mostly below 2, which is a very good result. Not everything is perfect — the very brightest whites retain a slightly cool tint, but overall the image is much more faithful. This is the improvement we described earlier when comparing scenes from 'Pan' and 'Billy Lynn'. The A400U allows HDR to be fine-tuned so that both detail and the correct overall scene brightness are preserved. This option was missing in other TCL models, where peak brightness adjustment was not possible. Here the manufacturer has made it available to the user, and it is clear it was needed. After calibration the A400U shows film without unnecessary boosting of the image.
TCL A400U - Smoothness of tonal transitions
9.4/10
The TCL A400U handles tonal transitions in 4K material very well. In bright scenes it’s hard to find any issues. The sky or the subtle halo around the sun look smooth, without visible banding or seams between shades. Colours flow smoothly from one to another, so nothing distracts from the film. Minor imperfections only appear in the darkest scenes, near black. You can spot slight banding there, but you have to look closely to notice it. During normal viewing it is unlikely to be noticeable. It’s a very good result and one of the A400U’s stronger points.
Image scaling and smoothness of tonal transitions
5.5/10
Smooth transition function
Image without overscan on the SD signal
The TCL A400U properly upscales lower-resolution sources to 4K. Edges are well defined and fine details remain discernible, so older films and regular broadcast TV look quite good. There’s also no problem with overscan, meaning the edges of the picture aren’t cropped. Even with very low-resolution material the TV shows the entire frame.
It fares much worse at removing imperfections from heavily compressed footage. The A400U, like the C7L, uses the older Pentonic 700 chip. The tone-smoothing feature is available, but in practice it achieves very little. Visible bands between shades remain on screen, and enabling it can introduce additional artefacts. This is one of the weaker points of the model. High-quality material looks smooth, as noted earlier, but if imperfections are already encoded in the recording the A400U can do little about them.
TCL A400U - Blur and motion smoothness
7.7/10
Maximum refresh rate of the panel: 144Hz
Film motion smoothing option: Yes
Blur reduction option: Yes
BFI function 60Hz: Yes, 120Hz (double contours)
BFI function 120Hz: Yes, 240Hz (double contours)
Brightness drop with BFI: 14%
The TCL A400U has a 144 Hz panel, so it’s well suited to sports and gaming. In films you can further tweak motion smoothness using the "Motion Clarity" settings. There are two sliders: "Blur Reduction" and "Flicker Reduction". They help improve the legibility of fast motion and soften abrupt camera shifts. You don’t need to set them high straight away, especially if you want to preserve a cinematic look.
The panel’s response time is decent, though VA smearing is noticeable. In the UFO test at 120 Hz a blurred trail remains behind the object and its fine details lose sharpness. They’re not very long trails, but it’s certainly not on a par with the best LCD panels on the market. BFI, which uses short interruptions in the displayed image to improve perceived motion clarity, doesn’t change much here. Instead double contours appear, so it’s hard to consider it particularly useful. However, the brightness drop when it’s enabled is small, around 14%, so it’s worth experimenting with yourself.
Blur (native resolution, maximum refresh rate):
Blur (BFI function enabled):
Blur (1080p@288Hz):
By contrast, the 288 Hz mode available from a computer after reducing the resolution to Full HD looks interesting. In the UFO test the object's shape and details that were blurred at 120 Hz become more clearly visible. Some motion blur still remains, especially against dark backgrounds, but the improvement in motion clarity is substantial. It's a sensible option for fast-paced games if we care more about smoothness than image detail, which we wouldn't see anyway from a very large viewing distance.
TCL A400U - Console compatibility and gaming features
9.8/10
- ALLM:
Yes
- VRR:
Yes
- VRR range:
48 - 288Hz
- Dolby Vision Game Mode:
Yes
- Correct implementation of HGIG:
Yes
- 1080p@120Hz:
Yes
- 1440p@120Hz:
Yes
- 4K@120Hz:
Yes
- Game bar:
Yes
TCL A400U has very extensive features for gamers, even though its appearance suggests a TV for an elegant living room. It supports 120 Hz in Full HD, 1440p and 4K, so it lets you use the high-speed modes available on consoles. When connected to a PC you can get 144 Hz at 4K or even 288 Hz at Full HD. In fast-paced games this gives plenty of freedom to choose between image detail and smoothness. It also has VRR, which adjusts the refresh rate to the frame rate and reduces screen tearing when a game doesn’t maintain steady performance. Its range is 48–288 Hz, with the highest value applying to Full HD. ALLM automatically switches the screen to game mode, and Xbox users can use Dolby Vision at 120 Hz as well. HGiG, which works correctly, is worth praising. It allows you to set HDR on the console without the TV additionally changing the look of the test pattern and making it hard to judge when the test pattern should disappear. That doesn’t mean the picture brightness in game mode is ideal, as we noted during calibration, but the HDR setup proceeds correctly. The package is completed by a clear Game Bar. You can quickly check the frame rate, the active HDR format or VRR status, and access additional tools such as a crosshair and a magnifier. The most important options are to hand without having to go into the full settings menu.
TCL A400U - Input lag
10/10
A400U responds to controller input very quickly. At 60 Hz latency is 13–14 ms, and at 120 Hz it drops to 8–9 ms in SDR and HDR10. These are excellent results, also for fast shooters and online games. Dolby Vision performs just as well: 14 ms at 60 Hz and 10 ms at 120 Hz means using this format does not result in any noticeable degradation of control. When it comes to input lag, there's little to criticise here.
| SDR | HDR | Dolby Vision |
|---|---|---|
| 1080p60: 14 ms | 2160p60: 13 ms | 2160p60 DV: 14 ms |
| 1080p120: 9 ms | 2160p120: 8 ms | 2160p120 DV: 10 ms |
| 2160p60: 14 ms | ||
| 2160p120: 9 ms |
TCL A400U - Compatibility with PC
8.5/10
Chroma 444 (max. resolution and refresh rate): Yes
Font clarity: Very Good
Readability of dark text and shapes: Average
Input lag in PC mode (4K, max. refresh rate): 9ms
Matrix subpixel arrangement: RGB
Max refresh rate: 144Hz
G-Sync: Yes
TCL A400U works very well with a computer, primarily thanks to its extensive gaming capabilities. Support for 4K at 144 Hz or 288 Hz in Full HD, working G-Sync and an input lag of 9 ms let you comfortably play even fast-paced titles.
Text legibility, however, depends on the selected refresh rate. At 120 Hz fonts look nearly perfect, regardless of size or colour. Switching to 144 Hz introduces an issue with horizontal strokes in letters, especially the darker ones. They are noticeably dimmer than the vertical strokes, which makes small text appear uneven despite maintaining chroma 4:4:4. If the A400U is also to be used as a work monitor, it's best to stick to 120 Hz and enable higher refresh rates for gaming. It's an annoyance, but it mainly affects people who sit close to the screen and work with small type. When gaming or using the computer from the sofa it won't be a major problem.
TCL A400U - Viewing angles
3.6/10
Brightness drop at an angle of 45 degrees: 79%
Viewing angles are not the strongest suit of the TCL A400U. The VA panel handles blacks well when viewed straight on, but colours lose saturation from the side and the image loses contrast. It's not the worst performance among TVs with a VA panel, but with a wider sofa layout the difference between a seat in the centre and one at the edge will be noticeable. It is clearly inferior to IPS panels, and even more so to OLEDs. The A400U is therefore best viewed straight on if you want to preserve full colour saturation and deep blacks.
TCL A400U - Daytime performance
8.5/10
Panel finish: Glare
Reflection suppression: Poor
Black levels during daytime: Very Good
In televisions meant to serve as interior decoration you often find matte screens that reduce reflections and help achieve a picture-on-the-wall look. The TCL A400U goes a different way. It has a fully glossy coating that unfortunately shows clear reflections of windows and lamps. You can also see this while watching, especially when a bright reflection falls on a darker part of a film. On the plus side, black levels and colours hold up well in a lit room. The image does not become milky and colours remain nicely saturated. The A400U’s biggest asset in daylight, however, is brightness. The average of our measurements was about 1,300 nits, and even with the whole screen filled with white the TV maintained around 700 nits. That’s a very good result, allowing comfortable viewing even in a brightly lit living room. You just need to position the screen sensibly. The A400U has enough power to cope with a bright environment, but it will not eliminate the reflection of a large window positioned directly opposite it.
Panel brightness
TCL A400U: 1227 cd/m2
TCL A400U - TV features
7.8/10
System: Google TV
System performance: Good
- HDMI inputs: 2 x HDMI 2.0, 2 x HDMI 2.1 48Gbps
- Outputs: Toslink (Optical audio), eARC (HDMI), ARC (HDMI)
- Network Interfaces: Wi-Fi 2.4GHz, Wi-Fi 5GHz, Ethernet (LAN) 100Mbps
- TV reception: DVB-T, DVB-T2, DVB-S, DVB-S2, DVB-C
Classic features:
Recording to USB (terrestrial TV): No - Recording programming: No
- Picture in Picture (PiP): No
- RF remote control (no need to aim): RF
- Backlit remote control: No
- Teletext: Yes
- Audio only mode: Yes
- Bluetooth headphones support: Yes
- Simultaneous Bluetooth headphones & TV audio: Yes
Smart features:
- AirPlay: Yes
- Screen mirroring (Windows Miracast): Yes
- Voice search: Yes
- Voice search in native language: Yes
- Ability to connect a keyboard and mouse: Yes
Google TV
Google TV on the A400U runs smoothly and lets you use the TV conveniently without an external streamer. The selection of apps is wide, so it's easy to find something to watch, and when searching for a specific film Polish voice search comes in handy. Instead of tediously selecting individual letters with the remote, just say the title. You can also cast content from your phone to the screen without much fuss. Those watching traditional TV get slightly fewer options. The lack of USB recording means you can't save a favourite programme for later without an external set-top box.
Practical features
The A400U has several practical features. For example, you can connect Bluetooth headphones while keeping the TV speakers on. However, there are some drawbacks, especially for viewers of traditional broadcast TV. You can't record programmes to USB, and there is no picture-in-picture mode to display two sources at once. It's also worth considering how you connect additional equipment. Of the four HDMI inputs, only two support high refresh rates at 4K, and one of them is also used for connecting audio via eARC. If you use that one for a soundbar, you'll be left with only one such input for a console or PC. With a single console that's no problem, but a more elaborate setup may run out of ports.
Remote
With such a refined look for the A400U it's a pity the same attention wasn't paid to the remote. The large plastic casing with lots of buttons looks rather ordinary next to such a well-made TV. A more minimalist remote, like the one on the C8L, would suit the character of this model much better. The A400U is, of course, the cheaper model, but if styling is one of its main selling points, why not? 😉 The remote itself works well and does not require pointing at the screen, although button backlighting would be useful in the evening.
Sound connection options
HDMI audio:
Other audio outputs:
- Toslink: Yes
Wireless audio:
- Bluetooth: Yes
Supported audio formats (external HDMI eARC audio):
- Dolby Digital Plus 7.1: Yes
- Dolby True HD 7.1: Yes
- Dolby Atmos in Dolby Digital Plus (JOC): Yes
- Dolby Atmos in Dolby True HD: Yes
- DTS:X in DTS-HD MA: Yes
- DTS-HD Master Audio: Yes
Senior accessibility
- Numeric keyboard on TV: Yes
- Font size adjustment: Yes
- Audio description: Yes
TCL A400U - Apps
9.6/10
TCL A400U - Playing files from USB
9.4/10
| Maximum photo resolution: | Supported photo formats: |
|---|---|
| 4 Mpix | JPEG |
| 6 Mpix | HEIC |
| 8 Mpix | PNG |
| 10 Mpix | GIF |
| 12 Mpix | WebP |
| 16 Mpix | TIFF |
| 20 Mpix | BMP |
| 24 Mpix | SVG |
| 28 Mpix | |
| 32 Mpix |
The built-in USB player in the TCL A400U performs very well. It opened almost all the video files, photos and music tracks we tested, so to play your own content from a USB stick what the TV offers straight out of the box is usually enough. One small caveat is the lack of support for subtitles in .txt format. If you have an older collection of films with such subtitles, you may need to convert them or install a different player. There is no problem with the popular .srt and .sub formats.
TCL A400U - Sound
6.7/10
82dB
Maximum volume
Supported codecs (TV speakers)
Dolby Digital Plus 7.1
Dolby True HD 7.1
Dolby Atmos in Dolby Digital Plus (JOC)
Dolby Atmos in Dolby True HD
DTS:X in DTS-HD MA
DTS-HD Master Audio
Unfortunately, the sound in the TCL A400U is as flat as its casing. The built-in 2.0 speakers with 20 W of power are sufficient for watching the news or standard television programmes, but for films and music they clearly lack bass. Explosions don't have the necessary impact, and music sounds rather thin. The slim design has its price, so for movie nights it's worth considering a soundbar, preferably one with a separate subwoofer. The TV supports Dolby Atmos and DTS, so additional audio equipment will also let you make better use of spatial soundtracks.
Sound Quality Test:
Acoustic Measurements
82dBC (Max)
75dBC
TCL A400U - Panel details
Software version during testing: v8-0012t01-lf1v641.003171
Image processor: mt5896 2,5GB RAM
Panel uniformity and thermal imaging:
Backlight Type: Mini-LED PFS LED
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