Hisense U8Q vs TCL C6KS / C69KS / Q6CS

When it comes to HDR, the Hisense U8Q shows its claws. On paper, that is, in synthetic measurement tests, the television can achieve nearly 4000 nits of peak brightness. This is a value that most models can only envy. In practice, this translates to very strong light effects in films – in some scenes, we managed to measure a real brightness of between 1500 and 2000 nits, which is a level typically reserved for the absolute top tier of televisions on the market.

Of course, it's not always perfect. In small, pinpoint elements, brightness can drop – a good example is scene number 4 from the film Sicario 2, where instead of thousands of nits, we get around 500. But it’s worth noting that the effect does not disappear completely – the light is still visible, and the image does not seem artificially dimmed. This is a typical issue with Mini LEDs, so it's difficult to consider this a major downside.

On the other hand, the colour reproduction is a huge plus. Thanks to additional coatings that enhance colour saturation, the U8Q nearly covers the entire DCI-P3 colour space (98%), and for the wider BT.2020 range, it achieved over 80%. This is an excellent result that makes HDR films look rich, vivid, and simply very cinematic.

And what about HDR? Here, the C6KS performs quite well and – as has become a recurring theme of this review – identically to the C6K model. The maximum brightness generated by this television is around 600 nits. In bright scenes, this translates to a really solid, cinematic effect, and generally, the video materials look good here. However, one must keep in mind the specifics of the dimming algorithm in this model. When very small, bright points (e.g., stars) appear against a dark background, the television can dim them quite significantly. The goal is simple: to eliminate blooming and maintain the best possible blacks. This is quite a reasonable compromise. Most viewers will definitely appreciate deep, "true black" more than additional micro-details, the display of which could cause the screen to appear greyed out. This is the nature of local dimming technology in this price range, and one must be aware of it. It is also worth noting that the TCL C69KS (C6KS) has an additional PFS coating, which is marketed under the slogan of QLED technology. Thanks to this, the colours are saturated and vibrant – our measurements showed that the coverage of a wide colour gamut reaches as much as 92% here.

We must admit that when the U8Q arrived at our editorial office, we were slightly surprised… and positively so. Usually, in televisions, the white balance immediately requires adjustment – it can be too warm or too cold, which immediately leads to strange colour mistakes. Meanwhile, here the situation looks really good straight out of the box. Of course, we are talking about our unit, so there is no guarantee that every model will be equally well calibrated, but in our case, the first impressions were very positive. The only more apparent issue concerned the way the television manages brightness. Looking at the EOTF graph, it is clear that the U8Q tends to brighten small elements on the screen. This, in turn, caused what we mentioned earlier – slight overexposure and the impression that the entire scene can be a bit too bright. However, this is not a flaw that undermines the picture, rather an effect characteristic of this model.

Unlike the more expensive C6K model, the tested C6KS does not have an option in the menu labelled as Filmmaker Mode. Is this a reason to cry? Absolutely not. Our tests have shown that in practice, in terms of colour reproduction, the lack of this specific label makes virtually no difference. The best available Film/Cinema mode here offers an almost identical picture characteristic to the aforementioned Filmmaker in the more expensive model. So we get a very similar image, just under a different name. Therefore, if you were wondering whether paying extra for the C6K gives you better colours – the answer is no, in both cases the base is the same and requires slight adjustments.

Of course, we wouldn’t be ourselves if we didn’t make adjustments to the white balance. After calibration, we managed to equalise the SDR signal to practically perfection – older films, YouTube content, and classic television looked almost ideal on the U8Q. This is truly an exceptional level that shows this model can do a lot if given a bit of help. Unfortunately, the situation is different with HDR content. The colours themselves don’t pose many problems, but the U8Q’s biggest issue remains the EOTF brightness characteristics. In practice, the television tends to “over-expose” beyond how the image should look in its original form. It’s that slight "bleeding" that we noticed earlier in comparisons with the best screens on the market. It’s a bit of a shame that this characteristic can’t be fully tamed – if we could maintain equally good control over brightness in HDR as in SDR, we would be dealing with an absolutely reference-quality image.

Thanks to the white balance adjustment, the C69KS's tendency to distort colours has been effectively limited, resulting in a very good final effect. After calibration, we will no longer see excessive warming of scenes in SDR or overly cool tones in HDR. However, it is worth noting the brightness characteristics. In SDR content, it is hard to have any objections – the image looks very good, especially in older films, television programmes, or materials from YouTube. It is significantly more challenging to evaluate the television's performance in HDR. Analysis of the EOTF curve suggests correct behaviour, but its practical variant reveals certain limitations. The C69KS can overly brighten the smallest elements of the frame, while at other times, it can dim the entire scene. Thus, calibration brought clear benefits in terms of colour quality, but certain limitations resulting from the local dimming operation and the way it is controlled by the C69KS cannot be overlooked, as we also saw in the C6K test.

Hisense U8Q handles lower quality materials quite well. The television can smooth out tonal transitions thanks to the "Smooth and Gradient Picture" feature – it works best when set to Medium. At this setting, it nicely dims unwanted bands and unevenness in the picture, but importantly, it does not remove the film grain or fine details.

The upscaling itself is also at a good level. Images from lower resolutions appear smooth and soft, sometimes even overly so – we get a plastic effect that may not appeal to everyone. Fortunately, this can be easily corrected with the sharpness slider, allowing the picture to be adjusted to personal preferences.

The C69KS handles upscaling quite well. The tested 576p material looks surprisingly decent – a considerable amount of detail is retained, and the algorithm adds a slight "rounding" effect to sharp edges, making the image appear more cohesive. The performance in smoothing tonal transitions is less impressive. The television practically cannot improve them, leaving the image in a rather raw state. With older material, this can be quite tiring, as the lack of additional processing highlights any imperfections.

Hisense U8Q features a panel that can refresh the image up to 165 Hz in 4K resolution. In practice, this will primarily be utilised by PC gamers, but as the saying goes – it’s better to have it than not 😊. For films and series, we have a built-in smoothness enhancer called Ultra Motion Smoothness. In the settings, it can be easily adjusted to suit personal preferences – whether we want a more “cinematic” frame rate or a smooth, theatrical spectacle.

C69KS offers a simplified motion enhancement panel in films, allowing the adjustment of effect intensity with a slider. This makes it easy to match fluidity to personal preferences. The ability to use higher refresh rates is also a plus – although the panel operates natively at 4K at 60 Hz, lowering the resolution to 1440p enables 120 and 144 Hz modes, both on consoles and PC. This sounds like great news, however, in practice, the image at these settings exhibits significant motion blur. The effect is so pronounced that the overall presentation appears merely average and loses its appeal for everyday use.

In terms of features, the Hisense U8Q has practically everything one could expect from a modern gaming television. Thanks to the new processor, the manufacturer managed to implement as many as three HDMI 2.1 ports, so there is no problem connecting several consoles or a computer. On top of that, it includes all the key technologies – Game Bar with parameter preview, variable refresh rate (VRR), automatic low latency mode (ALLM)… in a word, a complete set.

But as is often the case with Hisense, it fell a bit short of perfection. The biggest drawback remains the lack of support for the HGiG format, which allows the brightness of the television to be adjusted to the console and maximises HDR in games. It’s a shame, because if this element were included, we would have a device practically made for gamers. As it stands, the U8Q remains “only” a very good choice 😉

If we overlook the smudging and lack of native 4K at 120 Hz, the C69KS impresses with how well it performs during gaming. We get everything one can expect from a gaming television: variable refresh rate (VRR), automatic switching to game mode (ALLM), Dolby Vision Gaming mode, and a well-functioning HGiG. The television can also operate at 120 and even 144 Hz at lower resolutions, allowing for smoother gameplay on a console or PC. Additionally, there is a clear Game Bar that lets you quickly glance at key settings while gaming. As a result — despite a few limitations — the C69KS can be a really successful screen for gamers.