TCL A400 PRO vs SONY Bravia 9 II XR95M2

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.

The real showcase of the new backlight architecture and Sony’s processor is HDR material reproduction. At the official launch Sony engineers said (not officially 😉) that the brightness of the Bravia 9 II should be almost identical to their professional director’s monitor BVM-HX3110, which is priced at astronomical sums. Our lab tests confirmed those were not empty promises. During synthetic measurements on the L20 test pattern the TV effortlessly exceeded the 4000 nits peak brightness barrier. Most importantly, these spectacular results translate directly to real film scenes. In most of the demanding shots we tested the screen easily maintained brightness around 2500–3000 nits. Regardless of the scene’s character, whether the light was small and pinpoint or flooded almost across the entire screen, the HDR effect was incredibly intense.

Colours

Colours are another key pillar of RGB Mini LED technology (Sony’s True RGB implementation). Specifically for testing these kinds of displays we have permanently introduced a new research section to examine how TVs handle colours in real-world conditions. Traditional tests using synthetic patterns are no longer enough to determine actual colour-gamut coverage. From now on we also measure colour saturation directly in selected film scenes by overlaying measurement points on them. So how do the colours perform?

In synthetic tests the Bravia 9 II achieves excellent results. For the popular DCI-P3 space used for HDR content the colour gamut coverage reached almost 98%, while for the extremely wide and demanding BT.2020 space measurements indicated nearly 90%. However, in real, varied scenes those values fall by a few percentage points. This is a direct result of the nature of zoned RGB backlighting. When differently coloured elements or bright white highlights appear side by side, light from adjacent zones starts to bleed together, producing a slight whitish glow. That naturally affects colour saturation, reducing it slightly. It shows that despite Sony’s brilliant algorithm for controlling the RGB LEDs, the number of zones is still too small to eliminate this effect entirely.

Is that something to complain about? Of course not. The Bravia 9 II’s final colour coverage is ultimately the same as that of a very good QLED TV, and the most important point is this: the vast majority of HDR films and series are distributed in the DCI-P3 colour space. In that standard Sony easily maintains very high colour saturation, regardless of the scene.

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.

Contrary to appearances and high expectations, the Bravia 9 II we tested showed some issues with its factory calibration straight out of the box. Looking at the white balance charts, it’s clear it wasn’t perfect. In SDR content the red component was noticeably lacking, so the image leaned toward cooler, bluish tones. In HDR, however, the white balance in that respect was considerably better. So where do the visible errors in image reproduction come from? They result from unexpected tuning of the gamma and the EOTF curve. In both cases the Bravia 9 II straight from the factory showed a marked deviation from reference standards. In SDR material the gamma was significantly too high — at extremes it hovered very close to 2.8 instead of the target 2.4. In practice this meant the image looked artificially darkened and seemed washed of colour, with details in darker areas (the shadows) disappearing entirely. The opposite happened with HDR material, where brightness reproduction is governed by the EOTF. That curve was pushed too high above the correct value, causing the image to be artificially brightened across most luminance ranges. As with every TV we test, we subjected this unit to professional calibration. You can see the results and how we managed to correct these factory errors below.

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.

Fortunately, with professional calibration, most of the Bravia 9 II’s factory missteps can be effectively eliminated. We managed to precisely correct, above all, the white balance and the gamma curve and EOTF. After these procedures, in everyday use and during film viewings the television looks worlds better. The picture gained proper depth and modelling, the cool tint to whites disappeared, and shadow detail that previously vanished because of an overly high gamma finally became perfectly visible. Although we ultimately rate colour accuracy as very good, as specialists we must point out one fairly serious design flaw in this model. The Bravia 9 II could look even better if it were not for the complete lack of an advanced colour management system in the television’s menu.

While a basic white balance correction can be carried out here without difficulty, the settings lack options for adjusting specific colours. We tried to tackle this issue in every possible way, both with the traditional method from the remote and via dedicated calibration software for Bravia televisions. Unfortunately, that function has been completely locked. We suspect this may stem from the specifics of the new RGB architecture, which imposes its own limitations. It’s a great shame, because without it you cannot push colour reproduction to perfection. A skewed red still catches the eye. One can only hope that Sony will fix this shortcoming in time via an update.

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.

Digital processing and upscaling have long been Sony’s hallmark, and after testing the Bravia 9 II we can confidently say that nothing has changed in that respect. Sony remains at the forefront of the market. Their proprietary XR image processor, which in this model works alongside the main MediaTek Pentonic 1000 chip, deserves the highest praise. That combination delivers excellent results. The upscaling of lower-resolution material itself is extremely effective and precise. However, what most deserves applause in the XR processor’s operation is its tonal transition smoothing function. The system can reduce posterization in heavily compressed material to virtually zero. Crucially, the algorithm does this in a very intelligent way. It removes only the annoying digital “steps” in gradients without blurring fine texture details or creating an artificial, “plastic” look stripped of film grain. The picture remains sharp, natural and cinematic.

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 the Sony Bravia 9 II specification you won't find very high screen refresh rates above 120 Hz, which some more demanding PC gamers may regard as a drawback. However, in everyday use, whether during movie viewing, console gaming or watching sport, it's really hard to have any complaints about motion smoothness. The VA-type panel used here does show slight smearing, natural for this panel type, but the excellent Motionflow motion smoothing algorithms come to the rescue. In the system menu you'll find sliders for blur reduction and smoothing that let you precisely tailor the motion characteristics to your own preferences.

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.

Aside from a fairly serious design misstep in limiting the platform to just two full HDMI 2.1 ports, the Bravia 9 II offers almost all the key gaming features available on the market. Sony has already accustomed us to such a rich feature set in its previous models. The list of supported technologies is extensive. It includes automatic low-latency mode (ALLM), variable refresh rate (VRR), and a fully correct implementation of the HGIG standard and the Dolby Vision format tailored for gamers.