XIAOMI A PRO 2026 vs TCL A400 PRO

If you are hoping for a cinema-grade HDR effect in the new Xiaomi A Pro 2026, you better cool your expectations quickly. This television is simply too dim to fully showcase the capabilities of contemporary films or series designed for the highest image quality. Our measurements showed brightness in the range of 200–300 nits, which is more akin to SDR content than ambitious HDR productions. In practice, this means that while most films may look fine, they certainly won't evoke that "wow" effect that other televisions are known for. Fortunately, not everything is lost – we must credit the PFS LED filter used here, which is a solution similar to the quantum dot technology found in QLEDs. Thanks to this, the coverage of the DCI-P3 colour palette reaches about 94%, resulting in vibrant, saturated colours in the vast majority of materials.

The TCL A400 Pro is a moderately bright TV. Its peak brightness reaches around 600 nits. That level already allows for a real HDR effect, and in many films it does produce a noticeably more attractive picture than in SDR. However, it is not a level that overwhelms with sheer brightness. The A400 Pro therefore isn’t one of those TVs that ‘attack’ the viewer with a powerful flash in every eye-catching scene. The biggest limitation is seen with small bright elements on a dark background. Because of fairly aggressive local dimming control, the TV can significantly reduce their brightness, in extreme cases even to around 100 nits. This means that small lights, sparks, stars or individual highlights can be much less visible than they should be. It’s worth adding, however, that this isn’t without reason. The A400 Pro does this to maintain as deep a black level as possible and to limit the halo effect around bright objects. So it’s an intentional compromise: the TV more often opts for deeper blacks rather than maximally bright, point-like highlights. On one hand this can be understood, especially given the limited number of dimming zones, but on the other you should be aware that the HDR effect won’t always be as strong as the peak brightness alone might suggest.

On the plus side, the colours are a strength. The PFS LED filter used here, marketed by the manufacturer as QLED, allows for suitably saturated colours. Coverage of the DCI-P3 gamut measured around 94%, and BT.2020 around 74%, which is a solid result for this class.

What we saw in Filmmaker mode took us by surprise – and unfortunately not in a good way. The mode advertised as Hollywood standard resembled more of a shop window display. The white balance was shifted towards blue, leading to significant colour mistakes and burnt-out scenes in SDR content. It was slightly better, though still not perfect, in HDR materials. There were also issues there – the colour saturation and the entire palette consistently drifted towards cooler tones, resulting in an image that had more of an artificial, cold tint instead of a cinematic character. In other words: even in Filmmaker mode, which should showcase this television, we got an effect far from expectations.

As standard, we performed colour measurements in the best‑tuned Filmmaker Mode, the mode that is designed to be closest to the creators' intentions. The A400 Pro of course also offers other picture modes, but in practice these come with considerably larger colour errors and interfere more with the character of the image. Therefore we will not deal with them in detail in this part of the test. So how does the out‑of‑the‑box colour reproduction fare? In short: really very good. Actually, looking at our measurement results, downright excellent. Both the white balance and the luminance response were set surprisingly precisely. The errors were so small that during measurements we genuinely rubbed our eyes in amazement. Such good factory settings do not happen often, even in TVs operating in Filmmaker Mode. All the more credit is due to TCL, because the A400 Pro right out of the box can deliver an image very close to how the source material should look. The results were so good that one could easily think someone had already given this unit extra attention and tried to calibrate it.

Our nitpicking really comes down to just one thing. In SDR content the image was slightly brighter than the dark‑room reference intends, because the factory gamma was set closer to 2.3 than to 2.4. This is not a large error and most viewers will probably not even notice it.

It should, however, be noted that we are talking about our specific test sample. With factory colours there can always be some variation between units, production batches or screen sizes. We do not assume, therefore, that every A400 Pro will look identical straight out of the box.

Although Xiaomi is not a brand associated with top-tier televisions, it must be acknowledged that even in a budget model like the A Pro 2026, the manufacturer left plenty of calibration settings. After a few adjustments, the SDR image gained a completely new look. Colours stopped drifting towards blue tones, whites took on a more natural quality, and most errors dropped to a practically invisible level. As a result, SDR content looked very good, surprisingly so for this price range.

It was somewhat different with HDR materials. Here, it was immediately evident what we had already mentioned – clipping in bright scenes and issues with balance control. Calibration helped only partly, as the limitations of the panel itself played a role. However, it must be emphasized that for SDR, the television had transformed beyond recognition and in a decidedly positive direction.

Despite its superb factory calibration, we couldn't resist checking how the TCL A400 Pro would respond to professional calibration. Since the starting point was so good, we were all the more curious whether there was anything more to be had from the TV. And here we must boast: we managed to reduce our unit's colour errors to absurdly low levels. Measurements below a value of 1 are not something you see every day, even in very good TVs. Such results are more commonly associated with professional reference monitors than with a lifestyle TV for the living room. In terms of white balance and colour reproduction the A400 Pro therefore simply performed exceptionally well after calibration. The only gripe we have after closer analysis relates to the luminance behaviour. The TV adjusts luminance depending on the content being displayed and quite often the picture is slightly darker than the reference calls for. This is most likely due to the way the Mini-LED backlight and local dimming algorithms operate in this model. However, this does not spoil the overall impression, because in terms of colour accuracy alone the calibrated A400 Pro showed a level that was really hard to expect.

Upscaling and digital image processing in the Xiaomi A Pro 2026 are not among the strengths of this model. One might expect that since the television was not designed to achieve record brightness levels, the manufacturer would focus on a more robust processor and a set of features that would "enhance" lower-quality images. Unfortunately – and here we are also faced with significant disappointment. On the positive side, we can note reasonably good upscaling, which handles HD materials and boosts them up to 4K in an acceptable manner. However, this is where the list of advantages ends. The television does not offer any features that improve tonal transitions or smooth out digital imperfections, so in most cases, we get a raw image, exactly as we deliver from an external source. On a large screen, such a lack of support makes lower-quality materials simply look bland. An additional problem is the phenomenon of overscan. When watching older materials, it happens that part of the image gets cut off, which only amplifies the impression that Xiaomi still has a lot of ground to make up in this category.

Digital image processing is, unfortunately, one of the weaker points of the TCL A400 Pro. That does not mean the TV performs badly, but it is hard to call it anything clearly above average. The upscaling itself is adequate: edges are smoothed fairly well, the picture does not look overly sharp or "pixelated", and lower-quality content can be watched without much discomfort. At the same time, the overall image is slightly soft and lacks the precision offered by the best image processors in more expensive TVs.

Much worse, however, is how it handles tonal transitions caused by strong signal compression. TCL has equipped the A400 Pro with a "Gradual Smoothing" feature that, in theory, should limit visible colour banding and artifacts in lower-quality material. In practice, though, its effectiveness is very limited. It does not improve tonal transitions in any noticeable way, and at higher settings it can also smooth out image details, giving the picture an artificial, slightly blurred character. For that reason, we think it is best to leave this feature off. The A400 Pro copes decently with basic image scaling, but if you often watch heavily compressed content with noticeable posterisation, this model will not be among the best choices.

The fluidity of motion in the Xiaomi A Pro 2026 is an interesting compromise that arises from the hybrid matrix used here. At its native 4K resolution, the maximum refresh rate is 60 Hz – sufficient for those who mainly watch films and series. It is precisely with them in mind that the manufacturer has added a motion smoother, allowing users to adjust the image to their own preferences – opting for greater fluidity or leaving more "cinematic" frames depending on the settings.

The TCL A400 Pro is equipped with a 144 Hz panel, but in practice we are most interested in its behaviour at 120 Hz. That is the frequency most consoles are limited to today, as well as many sports broadcasts and high-frame-rate content. At that rate the TV performs quite well. The sharpness of moving objects is really good, especially after properly configuring the motion smoothing. The "Motion Clarity" function is responsible for improving smoothness. Its settings include two sliders that let you tailor how the motion smoothing operates to your preferences, separately for lower and higher frame-rate material. This makes it possible to achieve both a more cinematic look and a noticeably smoother picture. Those who do not want to fiddle with manual configuration can use presets such as low, medium, high, cinema or nature.

Exactly – since Xiaomi has included the "Game Boost 120 Hz" feature, one might expect that they would follow up with a solid gaming package. Unfortunately, reality quickly dampens this enthusiasm. Aside from this mode (which, it must be admitted, is a great addition in a budget design), we only have a rather odd player panel. It's hard to call it a full-fledged "game bar" – it’s more of a simple overlay on the TV Menu with limited capabilities. And that would be about it. There’s a lack of ALLM, so the TV won’t automatically switch to game mode. There’s no VRR, so you can forget about smooth frame sync. We also won’t find support for Dolby Vision in games or the HGiG format, which are becoming increasingly standard on consoles. In short: besides the Game Boost 120 Hz, which actually allows for a more enjoyable experience at 1080p or 1440p, the Xiaomi A Pro 2026 offers nothing that could particularly attract gamers.

In terms of features for gamers the TCL A400 Pro performs brilliantly. The TV has practically everything you can expect from a gaming TV today: support for 4K at high refresh rates, VRR, ALLM, correct implementation of HDR formats in games including Dolby Vision, and HGiG. That means it works well with both next-generation consoles and a PC. Another plus is the presence of the Game Bar, a special panel with the most important settings for gamers. From it you can quickly check basic information about the signal, refresh rate or active features, and also adjust the appearance and behaviour of some settings to suit your preferences. This solution may not change picture quality by itself, but it greatly improves the convenience of using the TV while gaming.

The only thing to complain about is the number of full HDMI 2.1 ports. The A400 Pro has only two such connectors out of the four available, and one of them also serves as eARC. In practice this means that if someone wants to connect two next-generation consoles and a soundbar, they may run into some limitations. In that scenario you will have to either swap devices or use additional equipment, such as an AV receiver or a soundbar with HDMI inputs. Even so, it is hard not to rate the A400 Pro very highly as a TV for gamers. The gaming feature set here is truly powerful.