Sony Bravia 8 MK2 vs TCL A400 PRO

Thanks to its new QD-OLED panel, the Sony Bravia 8 II can achieve an astronomically high brightness of around 2000 nits, which translates into almost reference-quality performance in films and series mastered in HDR. In test material such as Life of Pi or Sicario 2 the effect is genuinely impressive: details in bright areas remain perfectly visible and night scenes charm with depth and contrast. It is not, however, perfect. Compared with its toughest rivals, the Bravia 8 II shows a noticeable drop in brightness on full-screen, very bright frames. If you compare peak point luminance with 100% white in HDR mode, the Bravia 8 II can appear two or three times darker than models such as the LG G5 or Samsung S95F. In a scene from The Meg this was particularly obvious, with the screen becoming noticeably dimmer than competing TVs. Despite this shortcoming, the Bravia 8 II still ranks among the market leaders. Its absolutely top-tier colour gamut coverage is praiseworthy: DCI‑P3 at almost 100% and BT.2020 close to 90%. These are the specifications that allow HDR content to be fully realised and deliver cinema-like experiences at home.

The TCL A400 Pro is a moderately bright TV. Its peak brightness reaches around 600 nits. That level already allows for a real HDR effect, and in many films it does produce a noticeably more attractive picture than in SDR. However, it is not a level that overwhelms with sheer brightness. The A400 Pro therefore isn’t one of those TVs that ‘attack’ the viewer with a powerful flash in every eye-catching scene. The biggest limitation is seen with small bright elements on a dark background. Because of fairly aggressive local dimming control, the TV can significantly reduce their brightness, in extreme cases even to around 100 nits. This means that small lights, sparks, stars or individual highlights can be much less visible than they should be. It’s worth adding, however, that this isn’t without reason. The A400 Pro does this to maintain as deep a black level as possible and to limit the halo effect around bright objects. So it’s an intentional compromise: the TV more often opts for deeper blacks rather than maximally bright, point-like highlights. On one hand this can be understood, especially given the limited number of dimming zones, but on the other you should be aware that the HDR effect won’t always be as strong as the peak brightness alone might suggest.

On the plus side, the colours are a strength. The PFS LED filter used here, marketed by the manufacturer as QLED, allows for suitably saturated colours. Coverage of the DCI-P3 gamut measured around 94%, and BT.2020 around 74%, which is a solid result for this class.

Straight out of the box the Bravia 8 II performs really well. In its best IMAX® Enhanced mode the TV can reproduce colours in a pleasant, natural way, although "good" here does not mean "best in class". The white balance definitely needs adjustment, as skin tones tend to shift slightly towards pinkish/cool hues in both SDR and HDR content. We also noticed that the EOTF curve tends to brighten the darkest parts of the image. This is likely the manufacturer's attempt to reveal as much detail as possible even in deep shadows. Is that a good approach? It's hard to say definitively, but one thing is clear: it is not an ideal solution.

As standard, we performed colour measurements in the best‑tuned Filmmaker Mode, the mode that is designed to be closest to the creators' intentions. The A400 Pro of course also offers other picture modes, but in practice these come with considerably larger colour errors and interfere more with the character of the image. Therefore we will not deal with them in detail in this part of the test. So how does the out‑of‑the‑box colour reproduction fare? In short: really very good. Actually, looking at our measurement results, downright excellent. Both the white balance and the luminance response were set surprisingly precisely. The errors were so small that during measurements we genuinely rubbed our eyes in amazement. Such good factory settings do not happen often, even in TVs operating in Filmmaker Mode. All the more credit is due to TCL, because the A400 Pro right out of the box can deliver an image very close to how the source material should look. The results were so good that one could easily think someone had already given this unit extra attention and tried to calibrate it.

Our nitpicking really comes down to just one thing. In SDR content the image was slightly brighter than the dark‑room reference intends, because the factory gamma was set closer to 2.3 than to 2.4. This is not a large error and most viewers will probably not even notice it.

It should, however, be noted that we are talking about our specific test sample. With factory colours there can always be some variation between units, production batches or screen sizes. We do not assume, therefore, that every A400 Pro will look identical straight out of the box.

After calibration we mainly managed to eliminate the excessive cooling of the image caused by an overly strong boost to the blue channel. Reds became deeper and skin tones acquired a natural, healthy look. Actors who previously seemed 'cold' now appear much more lively and convincing on screen. One thing has not changed, however: analysis of the EOTF curve still shows that the Bravia 8 II tends to brighten the darkest parts of the image. It is hard to say whether this is an intentional move by the manufacturer or a result of the panel design and software. In practice this means scenes that creators intended to remain in deep shadow can reveal more detail than intended. Despite that, image quality after calibration is clearly better, and the warm, natural colours and realistic skin tones simply make watching on the Bravia 8 II more pleasing to the eye.

Despite its superb factory calibration, we couldn't resist checking how the TCL A400 Pro would respond to professional calibration. Since the starting point was so good, we were all the more curious whether there was anything more to be had from the TV. And here we must boast: we managed to reduce our unit's colour errors to absurdly low levels. Measurements below a value of 1 are not something you see every day, even in very good TVs. Such results are more commonly associated with professional reference monitors than with a lifestyle TV for the living room. In terms of white balance and colour reproduction the A400 Pro therefore simply performed exceptionally well after calibration. The only gripe we have after closer analysis relates to the luminance behaviour. The TV adjusts luminance depending on the content being displayed and quite often the picture is slightly darker than the reference calls for. This is most likely due to the way the Mini-LED backlight and local dimming algorithms operate in this model. However, this does not spoil the overall impression, because in terms of colour accuracy alone the calibrated A400 Pro showed a level that was really hard to expect.

Upscaling and digital image processing are a real showcase of the Bravia 8 II's capabilities. Sony has long been regarded as a master in this field, and this only confirms that reputation. Sony's proprietary XR processor can pull almost all the detail out of lower-resolution sources, whether it's television or an old DVD movie the picture looks sharper, with more detail and greater depth. Of course, if you feed it exceptionally poor-quality material (such as our archival photo of the Model), it won't work miracles, but for everyday viewing there's little to complain about.

The gentle gradation function also performs excellently. On the 'Medium' setting it effectively smooths tonal transitions, eliminating banding in colour and grey gradients while not destroying film grain or fine image details. It is precisely this balance between subtlety and effectiveness that keeps Sony's TVs among the best on the market in this category.

Digital image processing is, unfortunately, one of the weaker points of the TCL A400 Pro. That does not mean the TV performs badly, but it is hard to call it anything clearly above average. The upscaling itself is adequate: edges are smoothed fairly well, the picture does not look overly sharp or "pixelated", and lower-quality content can be watched without much discomfort. At the same time, the overall image is slightly soft and lacks the precision offered by the best image processors in more expensive TVs.

Much worse, however, is how it handles tonal transitions caused by strong signal compression. TCL has equipped the A400 Pro with a "Gradual Smoothing" feature that, in theory, should limit visible colour banding and artifacts in lower-quality material. In practice, though, its effectiveness is very limited. It does not improve tonal transitions in any noticeable way, and at higher settings it can also smooth out image details, giving the picture an artificial, slightly blurred character. For that reason, we think it is best to leave this feature off. The A400 Pro copes decently with basic image scaling, but if you often watch heavily compressed content with noticeable posterisation, this model will not be among the best choices.

Motion smoothness is, in the case of the Bravia 8 II, practically a closed matter. A 120 Hz OLED naturally delivers a very clean, sharp picture in fast-moving scenes, so there's little to complain about. Particular praise, however, is due to its motion-smoothing systems, which are among the best on the market. They let you precisely tailor the motion of films to your own preferences, ranging from subtle smoothing to an almost "theatrical" effect, without the risk of artificial judder, image tearing or annoying artefacts. It's one of those features you'll appreciate both during film screenings and when watching sport.

The TCL A400 Pro is equipped with a 144 Hz panel, but in practice we are most interested in its behaviour at 120 Hz. That is the frequency most consoles are limited to today, as well as many sports broadcasts and high-frame-rate content. At that rate the TV performs quite well. The sharpness of moving objects is really good, especially after properly configuring the motion smoothing. The "Motion Clarity" function is responsible for improving smoothness. Its settings include two sliders that let you tailor how the motion smoothing operates to your preferences, separately for lower and higher frame-rate material. This makes it possible to achieve both a more cinematic look and a noticeably smoother picture. Those who do not want to fiddle with manual configuration can use presets such as low, medium, high, cinema or nature.

In terms of features for gamers the TCL A400 Pro performs brilliantly. The TV has practically everything you can expect from a gaming TV today: support for 4K at high refresh rates, VRR, ALLM, correct implementation of HDR formats in games including Dolby Vision, and HGiG. That means it works well with both next-generation consoles and a PC. Another plus is the presence of the Game Bar, a special panel with the most important settings for gamers. From it you can quickly check basic information about the signal, refresh rate or active features, and also adjust the appearance and behaviour of some settings to suit your preferences. This solution may not change picture quality by itself, but it greatly improves the convenience of using the TV while gaming.

The only thing to complain about is the number of full HDMI 2.1 ports. The A400 Pro has only two such connectors out of the four available, and one of them also serves as eARC. In practice this means that if someone wants to connect two next-generation consoles and a soundbar, they may run into some limitations. In that scenario you will have to either swap devices or use additional equipment, such as an AV receiver or a soundbar with HDMI inputs. Even so, it is hard not to rate the A400 Pro very highly as a TV for gamers. The gaming feature set here is truly powerful.