TCL C855 vs XIAOMI A PRO 2026

TCL C855 delivers a highly varied HDR effect. On one hand, the television truly shines, while on the other, it resembles a lower model with FALD backlighting. Such a state of affairs is regularly observed with this brand, so it was not a surprise for us. The first and last scene, which has large light elements, looks phenomenal, "shining" with brightness levels of 1470 and 1820 nits respectively. Such effects will certainly make many people squint, while simultaneously feeling the extraordinary dynamism of the scene itself. You can truly feel as if you were inside the movie. The situation drastically changes when small or minor elements with high luminance surrounded by black appear on the screen. The TCL C855, to avoid the halo effect, significantly reduces brightness to a level of even 240 nits, which is a disappointing outcome, causing the film to not look like it was shot in HDR. The HDR effect in TCL C855 makes watching dynamic scenes more engaging, and the viewer can feel like they are part of the action. Even with smaller elements of high luminance, the television manages to maintain details without excessive dimming. Moreover, the TCL C855 test shows that the brightness of the image is adapted to scenes with a large amount of detail, increasing viewing comfort.

If you're counting on the cinematic HDR experience in the new Xiaomi A Pro 2026, it's best to temper your expectations. This TV is simply too dim to fully realise the potential of contemporary films or series designed for the highest quality image. Our measurements showed brightness levels in the range of 200–300 nits, which are values that are more suited to SDR content than to ambitious HDR productions. In practice, this means that while most films look decent, they certainly won't evoke the 'wow' effect that other TVs do. Fortunately, not everything is lost – credit has to be given to the PFS LED filter used here, 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 best factory mode for the TCL C855 is "Film," and it is on this mode that we conducted all our tests. However, like every mode predefined by the manufacturer, it had flaws that are worth correcting to achieve an image that is as close as possible to what the film producer intended. We will look at the colour characteristics in both SDR and HDR materials. Taking the former into account, we see a clear dominance of green in the white balance, which, as you might guess, gave an unpleasant greenish tint to the entire image. Examining a very important gamma chart, responsible for the contrast of the image, we see a significant deviation from the reference line marked at 2.4. From the left, we can observe a strong spike in the measured value, which at this point caused contrast exaggeration and blending of details into a dark blob. This state of affairs persisted for quite a while, up to 20% of the chart’s value, before then diving below the reference. This, in turn, meant that the image was brightened and contrast decreased significantly. The factory mode performed somewhat better in HDR materials, as the white balance looked quite good, except for the second half, where green again took over. Looking at the EOTF curve, which, unlike gamma, shows the rate of brightness increase, we see primarily two errors: the darkest scenes were too dark, and the brightest ones were overexposed. This, by the way, could be observed in the scene from the film "Pan" in the check paragraph for the TV's HDR.

What we saw in Filmmaker mode really surprised us – and unfortunately not in a good way. The mode advertised as the Hollywood standard resembled more of a display in a shop window. The white balance was shifted towards blue, which led to massive colour errors and the effect of blown-out scenes in SDR content. It was a bit better, though far from perfect, in HDR materials. There were also problems there – colour saturation and the entire palette consistently drifted towards cooler tones, resulting in an image that had an artificial, cold tint rather than a cinematic character. In other words: even in Filmmaker mode, which should be the showcase of this television, we got an effect far from expectations.

TCL, just like the vast majority of manufacturers, provides advanced calibration tools in its televisions. Here we find 2- and 20-point grey scale adjustments as well as an advanced colour management system. The results, as you can see, are very good and in SDR materials we have significantly approached the reference image. We eliminated both the green tint and the gamma issue, although there is still a slight "kink" at the very beginning. It went a bit worse with HDR materials, which the television ChooseTV C855 did not allow us to model properly. We only managed to slightly adjust the EOTF curve and significantly improve the colours themselves.

Even though Xiaomi isn't a brand associated with top-tier televisions, it's fair to say that even in a budget model like the A Pro 2026, the manufacturer left plenty of calibration settings. After a few adjustments, the SDR picture took on a completely new look. The colours stopped veering into blue tones, the whites gained a sense of naturalness, 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 a slightly different story with HDR materials. Here, it was immediately noticeable what we had already mentioned – the overexposure of bright scenes and issues with balance control. Calibration helped only partially, as the limitations of the panel itself were at play. However, it must be emphasized that in the case of SDR, the television changed beyond recognition, and definitely for the better.

Once again, we will look at the function of smoothing tonal transitions, but this time also image scaling. The latter is particularly important when watching materials of lower quality, such as some TV programs or older films. We will focus on the function responsible for tonal transitions. Interestingly, just like in the scenes in the previous test, it performed splendidly and smoothed out practically all the choppiness, but here it had problems. Using the menu responsible for the operation of this function, we found that none - not even the strongest - setting helped.

The image scaling in TCL C855 is characterised as one of the best we have had the opportunity to test so far. The image is sharp, but in a way that could be described as natural to our eye. Even small, fine branches do not have jagged contours, and there is no white halo around figures, which is characteristic of weaker scaling systems.

Upscaling and digital image processing in the Xiaomi A Pro 2026 are not among the model's strong points. One might expect that since the television was not designed to achieve record brightness levels, the manufacturer would have opted for a more robust processor and a set of features that would "enhance" lower quality images. Unfortunately – we were also met with significant disappointment here. On the plus side, it has reasonably decent upscaling, which handles HD content and boosts it to 4K in an acceptable manner. However, that is where the list of advantages ends. The television does not offer any features to improve tonal transitions or smooth out digital imperfections, so in most cases, we receive a raw image, exactly as we deliver it from an external source. On a large screen, this lack of support makes lower quality content look simply bland. An additional problem is the phenomenon of overscan. When watching older material, it happens that part of the image is cut off, which only intensifies the impression that Xiaomi has quite a bit of catching up to do in this category.

The maximum refresh rate that we can set on TCL C855 is 144 Hz. Naturally, this is only possible when connecting the TCL C855 TV to a very powerful PC. Otherwise, we will operate at a maximum refresh rate of 120 Hz, which is recommended if we primarily want to watch sports or content with a high level of motion dynamics. For those who require high fluidity of image, the manufacturer has implemented a multi-level motion smoother. It has been divided into two separate sliders that adjust the sharpness of moving images (Blur Reduction) and judder (Judder Reduction). Both sliders can be set in the range of 0 to 10, with each level affecting the degree of smoothing, so everyone can find their sweet spot. We present a setting that allows for slight smoothness without the soap opera effect.

The panel of TCL C855 features a very good response time. This is especially important, as VA panels often have issues with so-called ghosting, which is the effect where a black halo can be noticed behind a fast-moving object.

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

The TCL C855 television is equipped with full HDMI 2.1 ports with a bandwidth of 48 Gb/s. During our tests, we confirmed the seamless operation of all functions that come with this standard. As you can see, all the checkboxes light up green, which will certainly be appreciated by gamers, both console and those using the television as a computer monitor. Additionally, the TCL C855 supports both AMD FreeSync and NVIDIA's G-Sync, which can be easily activated in the graphics card settings. Users with very powerful setups can provide a 144 Hz signal to the C855, which the television handles effortlessly. It's also worth mentioning the implementation of the HGIG mode, which, due to the shortcomings of the "Game" mode, is overly bright, making it difficult to configure properly on-screen. Fortunately, the television performs excellently with the Dolby Vision format.

The TCL C855, as one of the first manufacturers, has equipped its televisions with a special GameBar feature that allows extensive setting changes on the fly, without the need to exit the game. It includes functions such as an additional crosshair grid, black level correction, and settings for individuals with disabilities. In the photo, we see the next generation of this solution.

In summary, the TCL C855 television will be an ideal solution for those looking for a screen for any kind of electronic gaming. With all the features supporting such entertainment, it is incredibly engaging. It should also be emphasized that it has very low input lag, regardless of the selected settings, including with the Dolby Vision HDR format.

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