Sony Bravia 8 MK2 vs TCL C9K

Thanks to the new QD-OLED panel, the Sony Bravia 8 II can achieve astronomically high brightness levels of around 2000 nits, translating to nearly reference quality in films and series recorded in HDR format. In test materials such as Life of Pi and Sicario 2, the effect is simply stunning – details in bright parts of the image remain perfectly visible, while night scenes captivate with depth and contrast. However, it's not perfect. Compared to the fiercest competitors, the Bravia 8 II shows a noticeable drop in brightness during full-screen, very bright scenes. When comparing peak luminance to 100% white brightness in HDR mode, the Bravia 8 II is even two or three times dimmer than the LG G5 or Samsung S95F models. This was particularly evident in a scene from the movie The Meg – the screen became noticeably darker than in competing televisions. Despite this drawback, the results of the Bravia 8 II still place it among the very top of the market. It deserves praise for its absolutely top-notch color gamut coverage – DCI-P3 at nearly 100%, and BT.2020 close to 90%. These parameters allow for fully extracting the potential of HDR content and providing a cinematic experience in the comfort of your home.

As we mentioned with black 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 is capable of squeezing out… 4000 nits of brightness! It sounds astronomical, but – and here, unfortunately, the pattern repeats – the numbers say one thing, and practice says another. In real movie scenes, the situation looks different. At best, when the light effects occupy a large part of the image and the local dimming algorithm does not have to think too hard about what to do with thousands of zones – the effect is really good. At that point, the C9K can reach around 1500 nits, which provides a pleasant, intense flash and can indeed make a positive impression.

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

Right out of the box, the Bravia 8 II performs really well. In the best IMAX® Enhanced mode, the television can reproduce colors in a pleasing and natural way, although “good” here does not mean “best in class.” The white balance definitely needs adjustment – skin tones tend to lean into slightly pink/cool hues, both in SDR and HDR materials. We also noticed that the EOTF curve characteristics show a tendency to brighten the darkest parts of the image. This is probably due to the manufacturer's desire to highlight as many details as possible, even in deep shadows. Is this a good approach? It's hard to say definitively, but we know one thing – it's not an ideal solution.

For color tests, as always, we reached for the Filmmaker mode – a new feature in TCL TVs for 2025. And while the direction itself is a step in the right direction, the execution leaves much 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 went in the opposite direction: the image became excessively blue. The Colour Checker test revealed quite a few color errors 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 blow out the entire scene, giving it an unnatural, even grotesque character. It's hard to call this a "director-created" mode – because the director has certainly never seen such an image.

After calibration, the excessive cooling of the image caused by the strong boost of blue color was eliminated. Reds became deeper, and skin tones took on a natural, healthy appearance. Actors who previously seemed "cold" now appear much livelier and more convincing on screen. However, one thing has not changed – the analysis of the EOTF curve still shows that the Bravia 8 II tends to lighten the darkest parts of the image. It's hard to say whether this is a deliberate choice by the manufacturer or a result of the panel design and software. In practice, this means that scenes the creators wanted to leave in deep darkness can reveal more details than intended. Nevertheless, the viewing experience after calibration is clearly better – warm, natural colors and realistic skin tones make watching on the Bravia 8 II simply more pleasant to the eye.

After calibration, we finally managed to tame the white balance – and it immediately translated into a more natural image. Colors finally started to look the way they should, and the overall presentation was incomparably better than in the factory settings. In other words – it’s worth taking a moment to improve this, as the gain is truly significant. The gamma responsible for managing brightness was also brought into order in SDR content, and the effect was more than satisfying. 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 dimmed the darkest parts too much. Exactly as we saw in the scene from the movie Billy Lynn. So, the color improvement after calibration makes a great impression, but brightness management in HDR remains the Achilles' heel of C9K and presents a certain technological limitation.

Upscaling and digital image processing are a true showcase of the capabilities of Bravia 8 II. Sony has long been regarded as a master in this field, and here it only confirms its reputation. The proprietary XR processor can extract nearly maximum quality from lower resolution materials—whether it's television or an old DVD movie, the image looks sharper, with more details and better depth. Sure, if we feed it exceptionally low-quality material (like our archival photo with the Model), it won't work miracles, but in everyday viewing, it's hard to find anything to complain about.

The soft gradation feature also performs excellently. In the "Medium" setting, it effectively smooths tonal transitions, eliminating banding on colored and gray gradients, while simultaneously preserving film grain and fine image details. It is this balance between delicacy and effectiveness that keeps Sony TVs among the best on the market in this category.

Digital image processing in TCL C9K is quite mediocre. The tonal smoothing feature seems to be present, but turning it on practically changes nothing – color bands are still visible, and it can unintentionally highlight elements we would prefer to hide, such as textures of objects. Fortunately, it doesn’t remove film grain, but that’s small comfort since the effects are still poor. Therefore, it's hard to recommend using this option.

On the other hand, image scaling performs much better. Lower quality materials look quite decent – characters and backgrounds are presented clearly, although, of course, with sources at 576p, physics cannot be fooled. Sometimes, characteristic aliasing on objects appears, but that’s the fault of the source itself, not the algorithm. A plus for not having issues with overscan – the image is not artificially cropped or enlarged.

Motion smoothness is practically a closed topic in the case of Bravia 8 II. The OLED with 120 Hz refresh rate naturally provides a very clean, clear image in dynamic scenes, so there is little to complain about. However, particular praise is due to one of the best motion smoothing systems on the market. They allow for precise adjustment of film smoothness according to one's preferences – from gentle smoothing to an almost "theatrical" effect – without the risk of artificial jumps, tearing of the image, or annoying artifacts. This is one of those features that will be appreciated both during movie screenings and while watching sports.

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

Sony really learned its lesson from previous years and in the Bravia 8 II prepared a package of features for gamers that is difficult to describe as anything other than "almost perfect." We have everything expected in equipment of this class – VRR, ALLM, Dolby Vision Gaming mode, HGiG, and even a convenient Game Bar that allows you to quickly preview parameters and change settings without leaving the game. Additionally, it's worth noting how smoothly and flawlessly these features work – no delays, no strange stutters. You simply turn on the game and everything looks as it should. Unfortunately, there are a few "buts." The manufacturer still gives us only two full-bandwidth HDMI ports, so if someone has a console, a PC, and another device like a Soundbar connected via eARC, it starts a game of cable swapping. It's also surprising that there is no support for 1440p resolution at 120 Hz – particularly important for Xbox gamers. Overall, however – this is one of those TVs that can comfortably be placed in the center of a gaming lounge, allowing you to enjoy gameplay without significant compromises.

For gaming, the TCL C9K is a complete tool. Here we have two (out of four) HDMI 2.1 ports with full bandwidth of 48 Gbps, so all key technologies work: VRR (variable refresh rate) and ALLM (automatic low latency mode). Additionally, the manufacturer added a really intuitive Game Bar, which allows you to quickly preview the most important parameters and adjust settings without digging through the menu. Also, TCL's policy is a plus – the TV is not 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 wide freedom.