TCL C655 / C69B 98' vs Hisense U7S Pro

The quality of HDR effect on the TCL C655 / C69B looks quite promising. The average value in the test charts is around 450 nits, which already allows for a hint of the brilliance of light effects and better image dynamics. However, as previously mentioned, this effect can be somewhat subdued by slight differences in bright and dark colours, resulting from the lack of local dimming technology. Nevertheless, the DCI-P3 colour gamut coverage of 94% deserves high praise, and this is made possible by the use of a quantum dot (QLED) panel. As a result, colours are vibrant and well-rendered 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 TCL C655 / C69B television offers a film mode that has been tested for colour reproduction quality. Although this mode is called film mode, unfortunately, it has many errors that the director would certainly not want to see when recording their work. Starting with image analysis, it's 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, making the colours too warm, and the overall image takes on a pink or yellow tint. The Colour Checker test confirms these errors – the colour samples stray into incorrect shades, affecting the overall colour fidelity. A minor issue is the brightness characteristics. However, this too is not without flaws. The gamma graph shows a strong spike at the beginning, which can cause the image to be excessively brightened, and the EOTF curve responsible for brightness in 4K HDR materials also has significant variations – it is evident how the television tries to maintain the appropriate brightness, but it does not always manage to do so 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 movie mode TCL C655 / C69B , the white balance has been adjusted, and the colours are displayed as they should be – which is confirmed only by slight deviations in the Colour Checker test. The gamma is really correct, which means the television shouldn't have problems 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" stronger in a given section of the screen. Despite this design limitation, which cannot be bypassed, we recommend adjustment in the settings, as the overall coloration 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 TCL C655 / C69B television handles tonal transitions in lower quality materials well. The "Gradual Smoothing" function, at its lowest setting, effectively eliminates visible banding, but at the same time causes a loss of detail, for example, in the texture of objects. The advantage is that it does not interfere with film grain, allowing the image to maintain a natural appearance.

In terms of digital processing, the television adds a considerable amount of artificial sharpness, which may appeal to those who prefer a crisp image. For those who favour a more subtle representation of details, this could be a downside. Another drawback is the rather aggressive overscan – the image gets cropped, leading to the loss of portions at the edges and limiting the field of view.

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.

Unlike smaller versions, the 98” model stands out with significantly better motion fluidity. Instead of the standard 60 Hz, this colossal screen is equipped with a full-fledged 144 Hz matrix, which opens up entirely new possibilities – both for gamers and movie lovers. Thanks to the full motion smoother, the television provides incredible image fluidity, eliminating motion blur and enhancing the viewing comfort of dynamic scenes. It is worth noting that this technology works across the full refresh range, meaning that there is no need to compromise between fluidity and quality. Additionally, the "Flicker Reduction" function allows you to adjust the fluidity to your own preferences – you can opt for a more cinematic effect with visible frames or an extremely smooth image.

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 98-inch TCL C655 / C69B is excellently equipped for gamers. Full HDMI 2.1 ports and a 144 Hz panel allow for gaming in 4K at 120 Hz, providing fluidity and responsiveness that will impress even the most demanding.

The television supports Variable Refresh Rate (VRR), eliminating screen tearing, while the Automatic Low Latency Mode (ALLM) ensures that the game starts immediately without the need for manually switching settings. There is also support for Dolby Vision and HGiG, making the image quality in games even better – details are sharp, colours are natural, and contrast is perfectly balanced.

Additionally, the television offers a dedicated gaming panel that allows for quick adjustment of picture settings without the need to exit the game. It is a device that meets virtually all the requirements of a modern gamer.

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.