Philips OLED809/819 vs TCL A400 PRO

Philips OLED 809 delivers a more than satisfying HDR effect. The television is capable of generating brightness exceeding 900 nits in almost every scene, and sometimes even over 1000. This result allows for a full experience of content with a wide tonal range. The only moment when Philips OLED 809 is unable to generate higher brightness is in a scene from the movie “The Meg,” which features a large amount of bright white across a significant portion of the screen. However, this cannot be regarded as a poor result, as it represents a considerable improvement over its predecessor. Generally speaking, such values for OLED panels produced by LG Display, which do not feature MLA technology, are very, very good. When combined with high coverage of the DCI-P3 colour gamut, they allow for an exceptional HDR experience. The Philips OLED 809 test showed that this television supports popular HDR formats such as Dolby Vision and HDR10+.

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 best factory mode in which we conducted all our tests was "Filmmaker", which has become rather standard in televisions from this manufacturer. However, let's check what its characteristics were before we began the calibration process. The first aspect we will examine is white balance, as despite appearing unassuming, it determines whether the image will be free from any kind of tint. The graph clearly shows that both in SDR and HDR materials, there was a dominant presence of two colours: red and green, which resulted in a strong yellow tint that was ubiquitous across the entire image. This is perfectly visible on the "ColourChecker" palette, where all hues shifted towards their warmer counterparts. The second thing we will scrutinise is, in our opinion, the two most important graphs regarding image quality assessment: gamma and the EOTF curve. Both aim to maintain adequate brightness and contrast. The first one serves to describe the brightness level in SDR materials, while the second shows the rate of luminance increase. Analyzing the first one, we can observe that it was extremely lowered compared to the reference value marked by the orange line. This situation resulted primarily in a sharp increase in brightness and a significant reduction in contrast, almost reminiscent of that in OLED televisions. The EOTF curve exhibited greater "moderation" and only slightly brightened the entire image to 50% of the maximum brightness.

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.

Philips, like most leading manufacturers, has been providing advanced tools for calibration processes for years. Here we will find both 2- and 20-point grey scale adjustments, as well as an advanced CMS (Colour Management System). As you can observe, this has brought about extremely beneficial results and profoundly changed the perceived image. Practically every one of the elements mentioned above has undergone a transformation and has been brought back to its natural state. This is particularly evident on the "ColourChecker" palette, where the measured samples are harmoniously in place. It must be said that the white balance has turned out exceptionally well, allowing us to enjoy a clean image free from any tint in both SDR and HDR materials. The biggest issue of OLED809, namely gamma, has been properly modelled and only shows minor errors here and there, which will not affect the overall picture. The EOTF curve, on the other hand, has been rid of that subtle brightening and now presents itself as reference-level.

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.

Philips OLED 809 did not perform particularly well in the test of tonal transition fluidity. Moving on to the part of the test where we assess the behaviour of the television's algorithms, we will once again check the function responsible for removing posterization. Indeed, such a function exists in the menu and has several available options. As you can see in the picture on the left, although its presence has been confirmed by us, it is not useful. Only at the highest setting does it effectively remove stuttering; however, it blurs the entire image in the process. Therefore, it is completely useless.

It happens more than once or twice that you and we watch lower quality materials. In this case, the quality of the image upscaling algorithms can have a beneficial effect. We must admit that those implemented in OLED 809 work quite efficiently and improve image quality without visible artifacts. You can only notice slight edge fringing; however, it is unlikely to be visible during normal viewing.

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 maximum refresh rate we can set on the tested television is 144 Hz. This value can be achieved by connecting it to a really powerful PC. In the case of consoles or television, everything remains the same. For those who require high smoothness of motion or dislike the characteristic stuttering of films recorded at 24 fps, the manufacturer has prepared a fairly extensive motion smoothing system. In the dedicated tab, we will find a slider for “Smoothness” that is responsible for eliminating stutter, and “Motion Blur Reduction,” which helps increase the sharpness of dynamic elements. The function works very well and granularly, meaning that each setting has a real impact on the perception of motion. We also mention that it works at a refresh rate of 120 Hz, as it operates on multiples of film or television materials. With such an extensive set of options, every user will find their golden mean. In the picture, we present our choice, which is slight smoothing without the soap opera effect.

Motion is influenced not only by settings on the television but also by the response time of the panel itself. OLED televisions feature the best response time on the market, which in the case of 809 is about 0.1 ms. There are no IPS/ADS or especially VA panels that come close to the results of organic panels.

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.

The Philips OLED 809 television supports all technologies included in the HDMI 2.1 standard, and during our testing, each one activated without any problems. Therefore, we must state that this television is perfectly suited for all gamers, whether they are using a console or a computer. It is worth mentioning that the manufacturer has opted to implement the HGIG mode, which provides a great alternative to Dolby Vision, which unfortunately in the OLED809 is unplayable due to very high input lag.

A nod to gamers is also the inclusion of a dedicated GameBar, which allows for monitoring current gameplay parameters and quick changes to settings. We will also find a function to enable a crosshair, which will be very useful when shooting with a sniper rifle, but from the so-called hip. Additionally, we can also find a shadow enhancement function for better visibility in shadows and a colour filter for gamers with visual impairments.

In summary, the OLED 809 is a very good and versatile device for gamers. Anyone who purchases this television for gaming does not need to worry about anything, as it is simply made for gaming. Especially since features such as VRR, ALLM, G-Sync, FreeSync, or HDR Dolby Vision gameplay will allow for an even greater immersion in their favourite title. Lastly, we will add that the only downside of the television in game mode is the artificial image sharpening, regardless of the settings, and it cannot be 'softened'.

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.