TCL C6KS / C69KS / Q6CS vs Sony BRAVIA 2 II (S25M2)

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.

The Sony Bravia 2 II is not a very bright TV and unfortunately that is immediately apparent in HDR. In our measurements brightness stayed around 300 to 330 nits, which is clearly too low for the brightest parts of the image to look truly impressive. In practice, HDR here does not differ that much from standard SDR. Bright highlights, the sun or lamps are of course visible, but they lack the intensity you would expect from HDR material. The Bravia 2 II therefore performs much better with standard SDR content, and in that use its limited brightness will be least noticeable.

Colour gamut coverage

The Sony Bravia 2 II is also not impressive in terms of colour. The TV does not use any additional gamut‑expanding filter, such as the quantum dots found in QLED TVs or a PFS phosphor layer. In our measurements coverage of the DCI‑P3 gamut was about 78%, and the very wide BT.2020 roughly 57%. That's definitely too little to talk about truly saturated colours in HDR material. More intense reds, greens or turquoises will simply be less striking than on TVs with an expanded colour gamut. The Bravia 2 II therefore performs much better in the Rec.709 standard, the gamut used for films, series and television in SDR.

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.

The out-of-the-box colour reproduction in Cinema mode was actually quite good, at least for ordinary SDR material. The Bravia 2 II had a slight tendency to boost reds, so some colours shifted to slightly warmer, at times faintly pinkish, tones. However, this wasn’t a major fault and during normal viewing the picture still looked fairly natural. There was a bit more happening with image brightness. Looking at the gamma curve, you can see Sony doesn’t stick perfectly to the reference value. The darkest areas are slightly lifted, while as brightness increases the gamma gradually rises and a larger part of the picture becomes darker than it should. That said, it’s not such a large difference as to be very distracting in everyday viewing. Overall, SDR straight out of the box performs quite respectably.

The situation is considerably worse in HDR. We’ve already mentioned the limited colour gamut, but in addition the Bravia 2 II noticeably manipulates image brightness here. The EOTF curve sits below the reference value for a large part of its range, which means the TV renders most mid and brighter parts of a scene darker than the source material intends. Only towards the very end of the range does the curve flatten out, as the panel reaches the limits of its capabilities. Combined with a peak brightness of around 300 nits, this results in HDR that not only lacks much brightness, but can also simply look too dark.

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.

Calibration did a lot for the Bravia 2 II, particularly with SDR content. Above all, we managed to even out the white balance and tidy up the gamma, which now follows the reference value much more closely. As a result, the image no longer has the previous pink cast, and the brightness across different areas is much better organised. You can also see this in the colour errors, which after calibration fell to a very low level (with slight issues in the most saturated reds). We also partially managed to rein in the Bravia 2 II in HDR, especially in the way the television handles image brightness. However, there is one thing no calibration can fix: the capabilities of the panel itself. A narrow colour gamut means the television is physically unable to reproduce the most saturated colours present in HDR material. On top of that, the low contrast of the IPS panel means darker scenes are veiled by a grey haze, which robs colours of some of their depth. So we can improve how the Bravia 2 II makes use of its capabilities, but unfortunately we cannot overcome the panel's inherent limitations.

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.

The upscaling on the Bravii 2 II is quite good and, in that respect, the TV matches the standard Sony has set. Lower-resolution content is sensibly upscaled to 4K, and the image is slightly smoothed in the process without excessive edge sharpening. The situation is worse when it comes to improving footage with visible compression artefacts. This is handled by the "Digital Noise Reduction" function, which at the "High" setting can indeed smooth out some unpleasant tonal banding. The problem is that it does this rather aggressively and, along with the imperfections, it also removes a lot of fine detail, including natural film grain. What is more, when there is more motion on screen its effectiveness drops sharply and any improvement is then minimal. For everyday use we therefore tended not to use this function.

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.

Bravia 2 II uses a 60 Hz panel and, given its capabilities, handles motion quite well. However, bear in mind that it is a basic panel and its limitations are already clearly visible, especially during sports. The TV cannot interpolate 50/60 fps material to a higher refresh rate, so it cannot further improve the sharpness of fast-moving objects. For films and series, however, it offers a conventional motion smoothing feature that can reduce the characteristic judder of material shot at 24 fps.

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.

The Bravia 2 II is not a television that lends itself well to gaming, and the list of features shows that quite quickly. You essentially only get the automatic low-latency mode ALLM and a simple Game Bar that lets you view basic signal information and change a few settings. But that is where the list of strengths ends. The TV does not support VRR or 120 Hz (not even at lower resolutions), and on top of that it has problems with a proper implementation of the HDR HGIG format. It is suitable for occasional console gaming, and thanks to low input lag controls remain responsive, but if someone is looking for a TV primarily for games, the Bravia 2 II will simply be a rather limited choice.