TCL C655 / C69B (55"-85") vs Hisense U7S Pro

Generally speaking, the quality of the HDR effect on the TCL C655 / C69B looks quite promising. The average value in the test charts is around 450 nits, which already allows one to feel the light effects and better image dynamics. However, as previously mentioned, this effect may be partially subdued by slight differences in bright and dark colours, resulting from the lack of local dimming technology. However, the coverage of the DCI-P3 colour palette at 94% deserves high praise, and this is made possible by the use of a quantum dot (QLED) matrix. As a result, colours are vivid and accurately represented when watching HDR content.

Let's start with the fact that the U7S Pro is an impressively bright television. In calibrated mode our measurement equipment indicated a staggering 2,200 nits of peak brightness. This is an outstanding result, especially given that this model is positioned more as a mid-range set. However, as we know, peak brightness on test patterns is one thing and real film scenes another. Unfortunately, in actual video material the backlight output drops noticeably. Admittedly, in the most demanding moments the TV can still exceed 1,000 nits, which is still a great result and fits the mastering standards of most HDR films, but aggressively tuned local dimming algorithms turn out to be the real challenge. Because of them, small bright details, such as stars or the moon in a night sky, are noticeably dimmed. The TV tries to maintain deep blacks at all costs, which is understandable, but unfortunately this comes at the expense of the dynamic impact and the brightness of the HDR effect. The colour reproduction is worth praising. The new U7S Pro is a QLED design that provides very wide colour gamut coverage. Unlike last year’s model (U7Q Pro), this year’s variant is a 'true' QLED rather than a solution based on a PFS filter. As a result, colour saturation has increased noticeably and coverage of the most demanding BT.2020 colour space has exceeded 81%.

The television TCL C655 / C69B offers a film mode that has been tested for colour reproduction quality. Although this mode is called film mode, it unfortunately has several errors that a director would surely not want to see when recording their work. Starting with image analysis, it is worth examining the white balance – both in HD and 4K HDR content, the white balance has significant errors. In both cases, the red colour dominates, causing the colours to be too warm, and the overall result takes on a 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 veer into incorrect shades, affecting the overall colour fidelity. A less significant issue is the brightness characteristic. However, this is also not without its flaws. The gamma graph shows a strong peak at the beginning, causing the image to be excessively brightened, and the EOTF curve responsible for brightness in 4K HDR material also has substantial fluctuations – it is noticeable how the television tries to maintain the appropriate brightness, but it does not always succeed effectively.

We tested the U7S Pro, as we always do, in the best factory-calibrated picture mode, namely Filmmaker Mode. The colours on display can be judged in two ways. The most disappointing was the preset intended for viewing SDR content, that is conventional television, YouTube and other less demanding material. The image there was noticeably yellowish, which turned out to be a direct consequence of an incorrectly set white balance. As our graphs show, this was due to a large deficiency of the blue component, which drastically affected the overall colour temperature. You can see this clearly on the ColorChecker charts and on the colour gamut plots themselves, where most samples shifted towards yellow. Fortunately the factory HDR mode performed much better; there the colour errors hovered around a Delta E of 3, which is already a very solid result.

After calibrating the television's film mode TCL C655 / C69B , the white balance has been adjusted, and the colours are presented as they should be – confirmed only by slight deviations in the Colour Checker test. The gamma is really quite accurate, which means the television should not have issues with brightness in low-resolution materials. Unfortunately, a similar EOTF characteristic is still visible, which is a natural phenomenon in televisions that do not have local dimming – they simply struggle to "shine" more in a given area of the screen. Despite this inherent limitation that cannot be bypassed, we recommend adjustment in the settings, as the overall colour presentation looks really very good.

We know, however, that the company Hisense is capable of much more – as previous generations have demonstrated – which is why we couldn't simply overlook the factory shortcomings of the U7S Pro model in everyday content. As is often the case, the television underwent professional calibration. The conclusions? This process brought about a colossal change. After manually adjusting the white balance and supplementing the deficiencies in the blue component, the annoying yellow tint disappeared as if by magic. White became naturally pure, and skin tones gained the appropriate, healthy hue. Importantly, calibration not only tamed the capricious SDR mode but also allowed us to extract the maximum potential from the panel, reducing average colour reproduction errors to levels nearly imperceptible to the human eye. The only thing we must criticise after the whole process is the very nature of the Mini-LED backlight and its specific interaction with the HDR signal. The aggressively tuned local dimming algorithms significantly interfere with the EOTF brightness curve. As a result, the backlight does not always work perfectly with the creator's intention – depending on the scene being viewed, the curve can noticeably deviate either above or below the reference, which at times disrupts the ideal dynamics of HDR imagery.

The television TCL C655 / C69B handles tonal transitions fairly well in low-quality materials. The "Gradual Smoothing" feature at a low setting effectively smooths out tonal transitions; however, it simultaneously blurs significant details, such as the texture of objects. On the plus side, it does not negatively impact the film grain, allowing the natural appearance of the image to be preserved. As for digital processing, the television adds artificial sharpness, which may appeal to some users who prefer a sharpened image. However, for those who prefer a softer look, this could be a disadvantage. A notable downside is that the image has been quite significantly cropped due to what is known as overscan, which reduces the field of view and trims the edges of the image.

The digital processing of lower-quality signals is of a very high standard here, all thanks to the MediaTek Pentonic 800 processor used in the U7S Pro. Upscaling itself also performs very well, meaning the TV's ability to lift lower-resolution sources to 4K is strong. We didn't notice any unnatural, sharp contours on the screen, and our test image featuring a model simply looked attractive.

The television C655 / C69B is equipped with a 4K@60 Hz panel, which means it works best for watching films and less dynamic content. It also features a "Flicker Reduction" function that allows for the adjustment of image smoothness – the user can choose whether they prefer smoother motion or a more cinematic, frame-by-frame 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 is worth noting that this feature is available in sizes from 55"+. Additionally, the largest variant, 98", is equipped with a 144Hz panel with full motion smoothing.

Hisense U7S Pro uses a panel with a maximum refresh rate of 165 Hz at 4K, and in game mode it can even reach 330 Hz at Full HD. However, it's worth remembering that these top figures matter little in everyday use, because most content is limited to a maximum of 120 Hz (for example when playing on a console). Even so, the TV handles motion quite well and performs very respectably for an LCD design.

It's hard to fault the smoothness itself. In the menu you'll find a motion smoothing feature called "Motion Enhancement", which hides two sliders: blur reduction and judder reduction. These allow manual configuration of the smoother, which works well for both films and sport, effectively improving the raw TV signal.

The TCL C655 / C69B television offers nearly the perfect set of features for gamers, supporting all the most important 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 the screen refresh rate to synchronise with the frame rate generated by the console, eliminating screen tearing and providing smoother gameplay.

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

If you plan to connect a console or PC to the U7S Pro, you'll be more than satisfied. This TV is excellent for gamers. Hisense didn't spare any expense and fitted it with four HDMI 2.1 ports with full 48 Gbps bandwidth, so you don't need to juggle cables, as each port supports the full feature set. It offers automatic low-latency mode (ALLM) and VRR, which operates across a wide range from 48 Hz up to a whopping 330 Hz. Of course, that 330 Hz is for now a bit of a gimmick for owners of powerful PCs, since consoles will still be limited to 120 Hz, but it's good to have that headroom for the future. The Game Bar is also very useful while gaming. It's a handy on-screen menu for players where, without leaving the main TV settings, you can quickly change picture mode, enable a crosshair in the centre of the screen, or even switch to an ultra-wide display aspect, which PC simulator fans will appreciate. The only drawback to be aware of is an incorrect implementation of the HGiG standard in games. The TV ignores the console's HDR10 instructions and keeps forcefully altering the image in an attempt to "improve" it, which makes proper HDR setup in the console menu (where you set brightness using the symbols/checkerboard pattern) somewhat more awkward.