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. This situation is, however, regularly observed in this brand, so it was not a surprise to us. The first and last scenes, featuring large elements of light, look almost phenomenal, "shining" with brightness levels of 1470 and 1820 nits respectively. Such effects will certainly cause more than one person to squint, while simultaneously feeling the extraordinary dynamism of the scene itself. You can truly feel as if you are inside the film. The situation changes dramatically when small or minor elements with high luminance surrounded by black appear on the screen. The TCL C855, in order to avoid the halo effect, significantly reduces brightness to a level of even 240 nits, which is a disappointing result, causing the film to not appear as if it was recorded in HDR. The HDR effect in the TCL C855 makes watching dynamic scenes more engaging, allowing the viewer to feel as though 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 adjusted for scenes with a large amount of detail, which enhances viewing comfort.

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 best factory mode for the TCL C855 is "Film," and it is on this mode that we conducted all our tests. Like any mode predefined by the manufacturer, it had its drawbacks that are worth correcting to achieve an image as close as possible to what the film producer intended. We will examine the colour characteristics in both SDR and HDR materials. Looking at the first, we see a noticeable dominance of green in the white balance, which, as you might imagine, resulted in an unpleasant greenish tint across the entire image. Observing the very important gamma chart, which is responsible for the image's contrast, 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 the image to be overly contrasted, merging details into a dark blob. This situation persisted for quite some time, up to 20% of the chart's value, before then dipping below the reference. This, in turn, meant a brightening of the image and a significant drop in contrast. The factory mode performed slightly better in HDR materials, as the white balance looked quite good, except for the second half, where green once again took precedence. 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 was something we could also observe in the scene from the film "Pan" in the paragraph checking the TV's HDR.

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.

TCL, like the vast majority of manufacturers, provides advanced calibration tools in its televisions. Here we find 2- and 20-point adjustments for greyscale 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. The performance with HDR materials was somewhat poorer, as the TCL C855 did not allow us to model them adequately. We were only able to slightly adjust the EOTF curve and significantly improve the colours themselves.

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.

Once again, we will take a look at the function of smoothing tonal transitions, but this time also at image scaling. The latter is particularly important when watching lower-quality materials, such as certain television programmes or older films. We will focus on the function responsible for tonal transitions. Interestingly, just like in the scenes of the previous test, it performed excellently and smoothed out practically all the inconsistencies; however, here it had problems. Using the menu responsible for this function, we found that no setting - even the strongest - was of any help.

Image scaling in TCL C855 is described 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 for our eyes. Even the small, fine branches do not have jagged edges, and there is no white halo around figures, which is characteristic of inferior scaling systems.

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.

The maximum refresh rate we can set on the TCL C855 is 144 Hz. Naturally, this is only possible by connecting the TCL C855 television to a very powerful PC. Otherwise, we will be operating at a maximum refresh rate of 120 Hz, which is recommended if we primarily want to watch sports or content with a lot of motion dynamics. For those requiring high image fluidity, the manufacturer has implemented a multi-stage motion smoother. This has been divided into two separate sliders regulating the sharpness of moving images (Motion Blur Reduction) and flicker (Flicker Reduction). Both sliders can be set in the range from 0 to 10, with each increment affecting the level of smoothing, so everyone can find their sweet spot. We present a setting that allows for slight smoothing without the soap opera effect.

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

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 C855 television is equipped with full HDMI 2.1 connectors with a full bandwidth of 48 Gb/s. During our tests, we confirmed the seamless operation of all functions that are part of this standard. As can be seen, all checkboxes light up green, which will certainly be appreciated by gamers, both console and those using the television as a monitor for their computer. Additionally, the TCL C855 supports both AMD FreeSync and NVIDIA's G-Sync, which can be easily activated in the graphics card settings. Those with a very powerful setup can send a 144 Hz signal to the C855, which this television handles effortlessly. It is also worth mentioning the implementation of the HGIG mode, which, however, due to the flaw of the “Game” mode, is overly brightened, making it difficult to configure properly on screen. Fortunately, the television performs excellently with the Dolby Vision format.

The TCL C855 is one of the first manufacturers to equip its televisions with a special GameBar, which allows for extensive setting changes on the fly, without the need to exit the game. It features functions such as an additional crosshair grid, black level correction, and settings for people with disabilities. In the picture, we can see the next generation of this solution.

In summary, the TCL C855 television will be an ideal solution for those seeking a screen for all sorts of electronic gaming. Thanks to all the features supporting such entertainment, it is incredibly engaging. It is also important to highlight the very low input lag, regardless of the selected settings, including with the HDR Dolby Vision format.

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.