TCL C655 / C69B (55"-85") vs Hisense U6NQ

Overall, the quality of the HDR effect in TCL C655 / C69B looks quite promising. The average value in the test patterns is around 450 nits, which already allows you to feel the light effects and better image dynamics. However, as mentioned earlier, this effect may be somewhat subdued by slight differences in bright and dark shades, resulting from the lack of local dimming technology. However, the DCI-P3 colour gamut coverage of 94% deserves high praise, and this is possible due to the use of a quantum dot (QLED) panel. This makes the colours vibrant and well-reproduced when watching HDR content.

Hisense U6NQ offers a stable HDR effect, which is a rarity in TVs with local dimming. On most streaming platforms, in films and series recorded in 4K, the TV delivers consistent performance – in every tested scene, regardless of difficulty level, brightness is around 450 nits. This is a pleasant surprise, as many models in this class exhibit distinct differences – some scenes are well-lit, while others are heavily dimmed by dimming algorithms. However, the Hisense U6NQ prioritises maintaining higher brightness, which comes at the cost of blacks, as noted in the paragraph about the contrast test.

The HDR effect on the U6NQ is satisfying, offering a noticeable 'punch' of light in bright moments, although it's worth remembering the aforementioned blooming, which can be visible in challenging scenes. In terms of colour, the TV also performs adequately – the coverage of the DCI-P3 colour gamut is 89%, while BT.2020 is 71%. While these are not results that would impress more demanding users, for beginners in the world of high-quality materials, the U6NQ is a solid choice. As such, it presents an interesting option as an 'entry-level' TV for home cinema.

The TCL C655 / C69B television offers a film mode that has been tested for colour reproduction quality. Although this mode is called film mode, it unfortunately has quite a few errors that the director would certainly not want to see when filming their work. Starting with image analysis, it's worth looking at the white balance – both in HD content and 4K HDR, the white balance has significant issues. In both cases, the red colour dominates, resulting in colours that are too warm, with an overall pink or yellow tint. This can be seen in the image below from the film "Star Wars." The Colour Checker test confirms these errors – the colour samples stray into incorrect shades, affecting the overall colour fidelity. The brightness characteristics are a lesser issue. However, they are not without flaws either. The gamma chart shows a strong spike at the beginning, which can cause the image to be overly bright, and the EOTF curve responsible for brightness in 4K HDR content also has significant fluctuations – it's evident how the television tries to maintain appropriate brightness, but it doesn't always succeed effectively.

Hisense U6NQ in Filmmaker mode offers really decent colour reproduction, although it's worth remembering that differences between individual units can be noticeable. The model we tested was pleasantly surprising, especially with HD content in SDR quality. The white balance was correct here, and errors in the range of 3–4 ΔE should be acceptable for the average viewer. The television performed slightly worse in reproducing colours with 4K HDR material. The dominance of blue tones led to unnatural cool shades on the Colour Checker chart, giving the image a "store" character. Combined with issues in brightness characteristics – gamma and EOTF curve caused some parts of the image to be too dark – the Filmmaker mode in this case loses some of its credibility. Although the factory settings of the tested unit deserve praise, particularly in SDR, there were still minor shortcomings that would require adjustments to fully utilise the television's capabilities.

After calibrating the movie mode of the television TCL C655 / C69B , the white balance has been adjusted, and the colours look as they should – which is confirmed by only slight deviations in the Colour Checker test. The gamma is really good, which ensures that the television shouldn't have any issues with brightness in low-resolution material. Unfortunately, a similar EOTF characteristic is still noticeable, which is a natural occurrence in televisions that do not have local dimming – they simply struggle to "shine" brighter in a given part of the screen. Despite this design limitation, which cannot be bypassed, we recommend making adjustments in the settings, as the overall colour presentation looks really very good.

Although the factory settings of the Filmmaker mode on Hisense U6NQ were quite good, we decided to undertake calibration to fully assess the capabilities of this model. Only after such a procedure can one see how the television performs under ideal conditions. In the case of SDR content, which was already at a high level, we managed to further improve the white balance. However, the biggest change came from adjusting the brightness characteristics – gamma was optimised and no longer causes excessive darkening of the image, which improves its naturalness.

For 4K HDR content, calibration also yielded positive results. We eliminated the issue of blue dominance, which resulted in a more balanced and natural image. However, managing brightness in HDR materials remains a more complicated issue. The EOTF curve, although it had problems with image darkening in the 10–30% brightness range under laboratory conditions, reveals other shortcomings in real scenes. The television tends to overly brighten the smallest elements on the screen. As a result, this leads to noticeable halo effects around bright objects. This phenomenon, which we mentioned earlier in the context of contrast and HDR, arises from the technological limitations of the model and is often difficult to eliminate.

In short: although the Filmmaker mode with factory settings performed decently, calibration allowed us to achieve an even better effect – minor adjustments resulted in a more balanced image, particularly in HDR content. For users seeking the highest quality picture, calibration will be a beneficial step.

Television TCL C655 / C69B handles tonal transitions in low-quality materials fairly well. The "Gradual Smoothing" feature on low settings effectively smooths out tonal transitions, but it also blurs important details, such as the texture of objects. A positive aspect is that it does not negatively affect film grain, which helps to maintain the natural look of the image. In terms of digital processing, the television adds artificial sharpness, which some users who prefer a sharper image might appreciate. However, for those who prefer a softer look, this may be a drawback. Another downside is that the image has been significantly cropped due to the so-called overscan, which reduces the field of view and cuts off the edges of the image.

With high-quality materials like 4K, tonal transitions on U6NQ look really good – colours blend nicely and the image is consistent. Unfortunately, when we switch to lower resolution content, the television doesn’t offer any extra features that could improve this aspect. An example is the test with the light bulb, where it’s clearly visible that the television struggles with reproducing subtle tonal transitions.

On the other hand, digital processing performs quite well. The image looks lively, is pleasantly soft, and free from excessive artifacts. Moreover, thanks to the sharpness settings, it can be tailored to individual preferences – whether towards a softer or sharper image. Overall, while upscaling lower quality materials could be better, the television handles image processing well.

The television C655 / C69B is equipped with a 4K@60 Hz panel, which means it's best suited for watching movies and less dynamic content. It also features a "Flicker Reduction" function, allowing users to adjust the smoothness of the image – they can choose whether they prefer smoother motion or a more cinematic, frame-like effect. The television can also adapt to lower resolutions, such as Full HD and 2K at 120 Hz, which will surely please gamers by offering a smoother image at the cost of resolution. It’s worth noting that this feature is available in sizes starting from 55"+. Additionally, the largest variant, 98", is equipped with a 144Hz panel with full motion smoothing.

Hisense U6NQ offers native refresh rates of 60 Hz at a 4K resolution, but the manufacturer has added a feature that allows for an increase in refresh rate to 120 Hz, at the cost of reducing the resolution to Full HD. This is a solution we have previously seen in TCL televisions, such as C655 or C655 PRO. This gives the user the option – higher motion fluidity or full resolution. This makes sense, especially considering that many new generation console games do not achieve full performance in 4K at 120 Hz.

When it comes to movies, the television is equipped with a motion smoother feature, which allows you to adjust the motion characteristics to your own preferences. This enables a more cinematic effect or increases fluidity in dynamic scenes. Overall, Hisense U6NQ offers sensible solutions in terms of motion fluidity that should satisfy both gamers and movie enthusiasts.

The TCL C655 / C69B TV offers an almost perfect set of features for gamers, supporting all the key technologies. It has an ALLM feature that automatically switches the TV to low latency mode, significantly improving responsiveness and minimising signal lag, which is especially important during dynamic gameplay. The VRR feature allows synchronisation of the screen refresh rate with the number of frames generated by the console, eliminating screen tearing and providing smoother gameplay.

The TV also supports Dolby Vision in gaming mode, ensuring better colour and contrast reproduction in games that support this format, and the Game Bar enables quick access to gameplay-related settings, such as response time, latency level, and other parameters. Unfortunately, the C655 / C69B does not support 4K resolution at 120 Hz (the 98" variant is the exception), which may be disappointing for more demanding gamers seeking the ultimate smoothness in high-resolution games. However, if we can forgo 4K, the TV offers support for Full HD and 2K at 120 Hz, providing a smoother image and serving as a great alternative for those who prefer higher refresh rates at the expense of resolution.

Hisense U6NQ gives the option to choose between 4K at 60 Hz and Full HD with 120 Hz refresh rate. This solution may appeal to gamers who want to decide what is more important to them – higher resolution or smoothness. The TV supports features like ALLM and VRR, which help in providing smoother gameplay. A nice addition is the GameBar – an easy-to-use panel that allows quick adjustments to picture settings and checking statistics. We also find the Dolby Vision Game mode here, which operates with low input lag, a big plus for console enthusiasts. Unfortunately, it lacks HGiG, which could further improve HDR quality in games. Nevertheless, the Hisense U6NQ performs quite well as a gaming TV, especially for those who play occasionally and do not require the highest refresh rate in 4K. It is a solid choice for less demanding users.