Philips MLED920 / MLED910 vs TCL A400 PRO

Philips MLED920 in our measurements in static tests even reached around 900 nits, which is really a solid result for a mid-range model. In practice, this translates to a lot of satisfaction during viewing sessions – in scenes rich in bright light, such as the first, third or fifth test slide, the screen managed to generate about 700 nits, which is sufficient to feel the true "HDR effect." However, it cannot be denied that the limited number of dimming zones and the compromises typical of mini-LEDs in more demanding scenes reveal their nature. In sequences with small light sources – like the moon or a scene from the film Sicario 2 – the television clearly prioritises maintaining deeper blacks at the expense of the brightness of these small elements. For most viewers, this is still a reasonable compromise, as the dark background looks significantly better, though it is important to be aware that the details themselves may not impress with their intensity. There is also a certain sense of dissatisfaction regarding the colours. Although the applied PFS filter (the equivalent of quantum dots known from QLEDs) does its job and the colours appear quite vivid, the coverage of the DCI-P3 palette reaches “only” 90%. In everyday viewing, this will be sufficient, but in extremely colourful productions – like the latest Disney animations – one can notice that some tones are not as vibrant as they could be in other setups.

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.

Like every Philips television we tested, we primarily assessed the MLED920 in Filmmaker mode – this is meant to be the "most honest" mode, designed for films and to faithfully convey the intentions of the creators. Indeed, in terms of colour reproduction, it performs the best among all the modes available on the television, but it is not without flaws. The first thing that catches the eye is the white balance. The image has a slight tendency towards purple-pink tones, which gives it a somewhat unnatural character. An even bigger problem, however, turned out to be what we mentioned earlier – image blooming. Just looking at the gamma or EOTF charts reveals that the line significantly deviates from the norm, dropping below a value of 1.8. In practice, this means "bleeding" of the brightest whites, where the image becomes almost milky. Fortunately, most of these issues can be corrected – the MLED920 responds well to calibration, and with a few adjustments, one can significantly improve the viewing experience.

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 managed to largely tame the white balance – to the extent that the average viewer will not be able to detect distortions in colours. The characteristic pink-purple haze that previously disrupted the naturalness of the image has also disappeared. The colour palette has been organised, and the colours appear more coherent and neutral. The gamma in SDR content post-calibration looks really good – there is no longer any mention of the previous 'bleeding' effect in bright scenes. The image has become more contrasty and devoid of that milkiness which had previously greatly harmed the viewing experience. In the case of HDR content, the improvement is also noticeable, although here it is still evident that the television is going 'its own way'. The EOTF curve cannot be fully shaped, as Philips simply does not offer the tools to allow precise control over this parameter in its settings. In many films, the television still exposes the image 'in its own way'. Despite these limitations, the calibration has delivered quite a bit of good – most of the colour distortions have been minimised, and the overall balance of the image has significantly improved. However, it must be noted that certain barriers stem from the very design of the hardware and simply cannot be overcome.

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.

The manufacturer has equipped this model with several features that improve signal quality, and although we usually approach such "enhancements" with caution, here they prove to be really helpful. The key option is called "distortion reduction" – it works best at a medium level, as on one hand it effectively smooths out unwanted stair-stepping and colour banding, while on the other it does not excessively cut out details, allowing the image to still look natural.

Things are a bit worse with upscaling. Lower quality materials – such as the test video with the model – appeared soft and lacking in sharpness. Indeed, it can be partially corrected with the sharpness slider in the menu, but the effect remains far from what competitors in a similar price range offer. Philips therefore still needs to work on this element, as compared to the successful improvement of tonal transitions, the upscaling simply falls short.

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.

The Philips MLED920 features a 144 Hz panel, which immediately suggests that we shouldn't complain about motion smoothness. And indeed – the motion blur is relatively low for a VA panel, and although slight issues can sometimes be noticed on darker backgrounds, they are not something that would stand out to most people during regular viewing.

Another significant advantage is the presence of a motion smoother called “Motion Style.” It allows you to adjust the sensation of smoothness to your own preferences – if someone prefers a more “theatrical,” almost television-like image, they can increase the sliders, whereas if they prefer to maintain the natural “jumps” of cinematic frames, it’s enough to set lower values. This way, everyone can find their golden mean.

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.

For gamers, the Philips MLED920 is truly a complete tool. The manufacturer has taken care of everything that is considered standard in televisions designed for consoles and PCs today. It features ALLM, so the console automatically switches the screen to game mode, alongside VRR and a refresh rate of 144 Hz, which guarantees smooth gameplay even in fast-paced titles. All key HDR formats are supported – including HGiG and Dolby Vision Gaming for Xbox – which means that regardless of what you are playing and on which console, the television will be able to extract the maximum potential from the image. The Game Bar also proves useful in daily gaming – a relatively simple implementation by Philips, but a functional panel where you can quickly check image parameters, enable VRR or adjust settings without leaving the game. It may not be as comprehensive as the competition, but it performs its task flawlessly. And finally, something that sets Philips apart from the competition – Ambilight. The three-sided LED backlighting can create a huge impression in games, especially in the evening. It's also a way to slightly 'extend' the screen and enhance the feeling of immersion. And as colourful LEDs have recently become almost a mandatory element of a gamer’s room, the MLED920 fits into this trend perfectly.

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.