Sony Bravia 8 (XR80) vs TCL C9K

Sony Bravia 8 performs reasonably well in terms of HDR brightness. A maximum brightness level of 880 nits is satisfactory and allows for well-rendered lighting effects in most scenes. In the tested segments of the films Life of Pi and Sicario 2, the TV presents itself quite well, offering vibrant and detailed images that fully capture the atmosphere of these productions.

However, a greater challenge arises in a scene from the film The Meg, where the screen is entirely very bright. In such situations, the limitations of OLED technology become apparent, as the TV loses brightness, dropping to around 450 nits. Such a drop is less satisfying, especially when the entire scene requires intense lighting. Despite these limitations, Sony Bravia 8 remains a competitive model, offering excellent coverage of the DCI-P3 colour gamut and 74% coverage of the BT.2020 standard. This results in rich colours and precise details, significantly enhancing the quality of HDR content viewing and making for a pleasurable experience.

As we mentioned regarding black levels and contrast – the C9K can make a huge impression in synthetic tests. Our measurements showed that on a screen 10% filled with white, the television can achieve... 4000 nits of brightness! It sounds out of this world, but – and here's where the pattern unfortunately repeats – the numbers say one thing, and the practical experience says another. In real movie scenes, the situation looks different. In the best-case scenario, when light effects occupy a large part of the image and the local dimming algorithm doesn't have to ponder too much about what to do with thousands of zones, the effect is really quite good. At that point, the C9K can hit around 1500 nits, which delivers a pleasant, intense burst and can indeed leave a positive impression.

The problem arises with smaller elements – such as stars in the sky, the moon, or individual reflections. That's when the proverbial cat comes out of the bag: the algorithms are not yet refined, and brightness drops to as low as 400–500 nits. That's a huge difference from the potential 4000 nits we saw in lab tests. Why does this happen? Most likely, the television is trying to protect the black levels in this way and minimize the halo effect around bright objects. Unfortunately, this comes at the expense of detail – some details simply vanish, and the scene loses its nature.

The best factory mode available on the Sony Bravia 8 television is IMAX Enhanced, which provides the most cinematic experience, although it is not set up perfectly. The TV tries to replicate cinema settings as faithfully as possible, however, certain shortcomings are noticeable. Starting with white balance, both for SDR materials and 4K, there is a clear dominance of blue. This makes the picture appear too cold, taking away its naturalness. Tests using Colour Checker show that colours shift towards cooler shades, which may lead to less accurate colour reproduction and makes the image less realistic.

As for brightness and contrast characteristics, gamma shows a significant drop at the end of the graph. This means that dark details may be too dim, while bright elements are too bright, causing them to lose subtlety and become less visible. As can be seen in the sky - in the comparison photo. Meanwhile, the EOTF curve is significantly above the reference value, causing the bright elements of the image to be too intense. As a result, users may perceive the image as unnatural, and bright areas may lose detail, negatively impacting the overall viewing quality.

For colour tests, we once again reached for the Filmmaker mode – a new feature in TCL televisions for 2025. While the direction is a step in the right way, the execution leaves a lot to be desired. The white balance in SDR content turned out to be too warm – there was an excess of red. On the other hand, in HDR, it swung in the opposite direction: the image became excessively blue. The Colour Checker test revealed quite a few colour inaccuracies that were noticeable to the naked eye. An even bigger problem turned out to be what we mentioned above – brightness management. Regardless of whether we were watching SDR or HDR content, the image tended to wash out the entire scene, giving it an unnatural, almost grotesque character. Therefore, it’s hard to call this a "director's mode" – because no director has ever seen such an image.

The calibration process of the Sony Bravia 8 television has brought significant improvements in image quality. The white balance has been distinctly enhanced, both for SDR content and 4K HDR, with minimal errors in the middle section of the graph. Gamma proved to be one of the biggest beneficiaries of the calibration – it has been completely stripped of previous drops, which significantly affected brightness stability and better detail reproduction in dark parts of the image. The EOTF curve has also been levelled out, making bright elements of the image appear more natural, and the overall tonal dynamics are now more balanced.

However, the most attention should be paid to colour reproduction, where despite the calibration, there are still some issues. Sony has omitted the use of a CMS system in this model, which allows for very precise control over colours. Consequently, the Colour Checker test for 4K materials still shows significant errors in colour samples. Despite these difficulties, we recommend carrying out the calibration, as the effects are noticeable and significantly enhance image quality, especially in terms of brightness and contrast.

After calibration, we finally managed to tame the white balance – and it immediately translated into a more natural image. Colours finally started to look as they should, and the overall presentation was incomparably better than on the factory settings. In other words – it’s worth taking a moment to improve this, as the gain is really significant. The gamma responsible for brightness management also managed to be brought into order in SDR content, and the effect was more than satisfactory. Unfortunately, when we turned on HDR materials, the situation quickly became complicated. No matter how we set the local dimming, the television had a tendency to do what it liked with the image – either it overexposed everything or darkened the darkest parts too much. Just like we saw in the scene from the movie Billy Lynn. Colour-wise, the improvement after calibration makes a great impression, but brightness management in HDR remains the Achilles' heel of the C9K and presents a certain technological limitation.

The fluidity of tonal transitions in low-quality materials on the ChooseTV 8 is lacking. Unfortunately, the gentle gradation feature (which was available in previous models) is missing, which is a significant downside. The digital noise reduction function can improve tonal transitions quite well, but it also tends to remove some details, such as clouds in scenes from the film The Martian, which may not appeal to everyone. When it comes to digital processing, the Sony XR80 TV performs quite well. The model in the test scenes is displayed without noticeable errors, and the branches in the background are not overly jagged. This shows that ChooseTV 8 is capable of processing complex image details at low resolution well.

Digital image processing on the TCL C9K is rather average. The smooth tone transition feature seems to be present, but activating it practically changes nothing – colour bands are still visible, and it can unintentionally highlight elements we’d rather keep hidden, such as object textures. Fortunately, it doesn’t remove film grain, but that’s poor consolation given that the effects are still meagre. It’s therefore hard to recommend using this option.

On the other hand, image scaling presents itself much better. Lower quality materials look quite decent – characters and backgrounds are rendered clearly, although of course, with sources like 576p, the laws of physics cannot be fooled. Occasionally, there’s characteristic edge distortion of objects, but that’s the fault of the source itself, not the algorithm. A plus for not having issues with overscan – the image isn't artificially cropped or enlarged.

Sony Bravia 8 offers a maximum refresh rate of 120 Hz, which lays the groundwork for smooth viewing of dynamic content such as sports and games. As a result, movements are sharp and fluid. For more demanding users, the Sony XR80 television is equipped with an advanced motion smoothing system, which is divided into three segments: Smoothness (Film), Smoothness (Camera), and Clarity. The first two are responsible for adjusting the level of blur and smoothing of the image. The third option, concerning clarity, will be described in more detail below. Each of the parameters can be tailored to personal preferences, allowing users to find the optimal setting suited to their individual needs.

Similar to the C8K, the C9K is also a really fast TV – both figuratively and literally. It features a 4K panel with a refresh rate of 144 Hz, and at lower resolutions, the panel can even ramp up to 288 Hz. Such speed translates into practice – while watching sports or playing games, the image looks very smooth and clear. Additionally, in movies, we get an extra motion smoother called Motion Clarity, which allows you to adjust the smoothness to your own preferences – from cinematic "judder" to almost theatrical smoothness.

Sony Bravia 8 has significantly improved its compatibility with consoles compared to earlier models. The TV supports variable refresh rate (VRR), which eliminates screen tearing, and is compatible with graphics cards, ensuring smooth visuals. The auto low latency mode (ALLM) reduces input lag, which is crucial in fast-paced games. Dolby Vision with low latency additionally provides impressive HDR effects that look fantastic during gameplay.

The Sony XR80 TV also features a Game Bar, which allows quick access to settings and monitoring parameters while gaming. An interesting option is the ability to enable a virtual crosshair on the screen, which can provide a slight advantage in shooter games.

A downside is the lack of support for 1440p@120hz resolution, which could make gaming easier for users with less powerful graphics cards. Additionally, the Sony XR80 only has two HDMI 2.1 ports, one of which is typically used to connect an audio system via eARC, limiting the number of available ports for connecting next-gen consoles.

From a gaming perspective, the TCL C9K is a complete tool. It features two (out of four) full bandwidth 48 Gbps HDMI 2.1 ports, so all the key technologies work: VRR (Variable Refresh Rate) and ALLM (Auto Low Latency Mode). Additionally, the manufacturer has included a really intuitive Game Bar that allows you to quickly check the most important parameters and adjust settings without fumbling through menus. Also, TCL's policy is a plus – the TV isn’t afraid of any HDR formats, even in game mode. Whether it's HGiG or Dolby Vision for the Xbox Series S/X console – everything works as it should, giving the player plenty of freedom.