Haier Q80FUX vs TCL C69K / Q6C

Alright, let's move on to the topic that really sparks discussions, which is the capabilities of the TV in HDR mode. Let's be clear from the start: the Haier Q80FUX is certainly not a brightness demon. The panel of this set can generate about 350 nits at peak, which in today's reality is an absolute minimum to even talk about the presence of HDR expanded dynamic range. On the plus side, this brightness is at least stable – regardless of the test pattern or film scene we used, measurements consistently hovered around 300-350 nits. These are at best adequate results, definitely far from the dazzling display of capabilities that we know from more expensive models. Fortunately, there is one aspect where the Q80FUX makes up for these shortcomings and does so considerably. We are talking about a QLED TV (or more precisely PFS LED), which means that thanks to the quantum dot filter used on the panel, it can generate truly juicy, vibrant colours. These are not empty promises – covering nearly 95% of the DCI-P3 colour gamut is an impressive result and directly translates into very pleasant, saturated colours for the eye.

In terms of brightness, TCL C69K / Q6C is a moderate model. In optimal movie conditions, it shows its full potential, reaching a maximum of around 600 nits. In scenes with large, intense light sources, the HDR effect can be truly satisfying, giving a cinematic glow. However, it's important to keep in mind that when managing the backlight zones, there are situations where parts of the image are dimmed, and at times become barely visible. This suggests that there is still a lack of proper optimization of the algorithms, although considering the technical parameters in this price range, the overall construction still looks very good.

Factory settings for movie mode are seldom perfect, but in the case of the Q80FUX, we encountered a noticeable imbalance. In SDR content, the image was definitely too warm, due to an excessive amount of red in the white balance, giving the overall picture a slight sepia tone. Conversely, in HDR materials, the television fell into the other extreme – an excess of blue caused an unnatural, cool effect in perception. However, it wasn't the fickle white balance that was the biggest issue with this TV. The real culprit, responsible for the previously described problems, was hiding deeper. It turned out that the Q80FUX has completely miscalibrated gamma values and, crucial for HDR, a poorly executed EOTF curve. It was these erroneous factory settings that caused the notorious clipping of the brightest parts of the image, imposing that characteristic milky filter over them. Thus, we found the source of the problem. This situation led to general, significant colour inaccuracies that were easy to catch even for an untrained eye. Like every television we tested, we decided to calibrate this model as well, and you can find the results of these adjustments in the next paragraph.

The Filmmaker Mode, which has been introduced in this year's TCL TVs (including the C69K / Q6C), is definitely the best choice "to start with". This is the mode we recommend for everyday movie and series viewing. Unfortunately, as is often the case, best does not mean perfect. In SDR materials, the image turned out to be too warm, with a strong red tint in the white balance. The opposite impression was had with HDR content – here the image became cooler than it should have been, due to an excess of blue. Additionally, there is the brightness characteristic, which at times resulted in overexposures. In practice, this translated to fairly noticeable errors in color tests, which is difficult to accept in a mode branded as "by the creators".

The results of our calibration procedures must, unfortunately, be regarded as twofold. Generally speaking, the picture is undeniably better than before the adjustments; however, the biggest winner of this process has been SDR content. It is precisely here, after correcting the gamma curves and white balance, that we achieved results that can safely be called very good. Once set up, the Q80FUX truly shines in standard dynamic range, displaying only slight errors in the most challenging skin tones. Unfortunately, the weakest link remains HDR content. And here's the paradox: even though we managed to calibrate the white balance to near perfection, the overall colour errors still remain at quite a high level. The reason is that the television still interprets the static HDR10 metadata "in its own way," stubbornly enforcing that unfortunate image clipping effect, which inevitably leads to significant distortions. Although we successfully eliminated the factory excess of blue, due to this electronic interference, the screen can still veer into somewhat too cool tones. That’s just how this television is.

Through white balance adjustment, we were able to significantly reduce the tendency of ChooseTV C69K / Q6C to distort colours, which resulted in a very good final outcome. After calibration, the problem of excessive warming of scenes in SDR and over-cooling of the image in HDR disappeared. However, it's worth analysing the brightness characteristics more closely. While in SDR content there are few complaints – the picture looks really good, especially in older films, TV programmes, or on YouTube – it performs much worse with HDR content. Analysis of the EOTF curve suggests that everything is fine, but in practice (EOTF in films), the limitations of the actual construction become evident. This model tends to excessively brighten small parts of the frame, while in other situations, it darkens the entire scene too much. The effect of calibration is therefore undeniable, and in terms of colourimetry, ChooseTV C69K / Q6C gains a lot. Unfortunately, certain limitations arising from local dimming management simply cannot be bypassed.

If there's one area where Haier clearly shows it still has a lot to catch up on compared to the market leaders, it's digital image processing. The upscaling, well... it's just okay. And that's really all that can be said about it. It does what it's supposed to do: ensures that lower resolution signals don't scare you with harsh pixelation on the screen and don't look like a forcibly enlarged postage stamp. However, it's far from the finesse and "intelligent" sharpening that more experienced players in this market have developed over the years. The biggest issue with the Q80FUX software is the almost complete lack of additional "cleaning" and smoothing features for the image. The receiver offers no noise reduction mechanisms or gradient enhancement. This means that with older or highly compressed materials, we simply have to accept that all the imperfections in tonal transitions or colour blending, which we mentioned earlier, will constantly accompany us during viewing.

In terms of image scaling, TCL C69K / Q6C performs quite well. Lower quality content is presented acceptably, and due to the lack of overscan issues, the image is displayed in full without any cropping. However, don’t expect miracles – materials of very low quality won’t gain a second life here, as the image processor has its limitations.

On thin lines and details, there is noticeable jaggedness, which reveals the lack of more advanced image enhancement algorithms. It's also a shame that the C69K / Q6C lacks a feature for smoothing tonal transitions. As a result, in older films or video materials, color banding can be visible and may become distracting during extended viewing.

The issue of motion fluidity and blurring is largely predetermined by the use of a 60Hz panel, which naturally makes it difficult to recommend this receiver to enthusiasts of very dynamic content. Fortunately, in the Q80FUX, we find a few options (although, as will soon become clear, really just one) intended to enhance the experience with older film productions. There is a "De-Judder" slider available, which indeed affects motion fluidity and allows us to adjust it to our preferences: from raw, cinematic frame rates to a more theatrical, smoothed presentation. However, a true surprise awaits us right next to it in the menu. There is also a second slider, supposedly dedicated to removing blur – this is a feature we typically encounter in 120Hz panels, aimed at combating blurring in sports. As we expected, recalling memories from testing the K85F model, here too this slider is merely a façade. Its adjustment contributes absolutely nothing to the picture and simply seems to be an oversight by the product engineers who left a non-functional option in the software for this type of panel.

The use of a 144 Hz panel in TCL C69K / Q6C is a significant advantage in this price range. This represents an important step forward compared to its predecessor (C655 PRO), which only offered 60 Hz at 4K. The difference is particularly noticeable when watching sports or gaming – the ball, players, and dynamic action in games are displayed more clearly and without losing detail. An interesting feature is also the panel's ability to operate at 240 Hz (which the manufacturer does not officially mention) – we will revisit this topic in relation to the PC gaming mode. TCL has also added a feature for movie fans: “Motion Clarity.” This allows users to adjust the picture to their own preferences using two simple sliders. We can either leave the visible film frame or opt for a very smooth one, "

Entering the realm of gaming, the Haier Q80FUX proves to be quite a good companion for the "casual gamer." It is equipped with some highly sought-after features today such as VRR (variable refresh rate) and ALLM (automatic low latency mode). However, the biggest surprise is something else. Even though we don't have a 4K@120Hz panel here, the television can accept and display a 120Hz signal at a lower resolution (Full HD). This is a very useful feature, allowing you to consciously switch the console to a lower resolution mode in exchange for significantly higher fluidity, which is a perfectly acceptable compromise in the gaming world.

We won't particularly complain about the lack of additions like the "Game Bar," as it's just a nice extra. However, the most concerning issues arise when we enter the world of HDR in gaming. Due to the fact that the television continuously adapts the signal "in its own way," setting the brightness on the console according to the HGIG standard is almost impossible to accomplish according to the instructions. Worse still, in Dolby Vision mode for gaming, the input lag increases to around 50 ms, which is a high enough value that essentially makes this mode unusable. Generally speaking, we still wouldn't recommend gaming on this television in HDR mode, so these aren't that serious shortcomings. What’s most pleasing is the presence of 120Hz in Full HD, making the Q80FUX quite a cool television for the occasional gamer.

TCL C69K / Q6C is a television that can confidently be called equipment designed for gamers. Here we have 4K at 144 Hz, VRR support, automatic game mode (ALLM), and Dolby Vision Gaming. Additionally, there's a practical Game Bar, which is a panel with the most important settings within easy reach – handy when we want to change something quickly during gameplay (e.g., aspect ratio: Yes, it can be done!). The wide range of VRR, reaching up to 240 Hz, is noteworthy. However, this option is mainly for PC gamers looking to go below native 4K resolution. In this case, the television can spread its wings and show additional smoothness, particularly in fast e-sport titles. For consoles, we stick to the standard limit of 120 Hz, but even so, the possibilities are truly extensive. The only minor criticism is slight ghosting that can sometimes be seen in dynamic scenes. Other than that, C69K / Q6C offers everything gamers expect from a television.