TCL A400 PRO vs Samsung QN80H

The TCL A400 Pro is a moderately bright TV. Its peak brightness reaches about 600 nits. That level already allows for a real HDR effect and in many movies it does produce a noticeably more attractive picture than SDR. However, it is not a level that overwhelms by brightness alone. The A400 Pro is not one of those TVs that "attack" the viewer with a powerful flash in every dramatic scene. The biggest limitation is visible with small bright elements on a dark background. Due to rather aggressive control of the dimming zones, the TV can significantly reduce their brightness — in extreme cases down to around 100 nits. That means small lights, sparks, stars, or single highlights can be much less visible than they should be. That said, this is not done without reason. The A400 Pro does this to keep blacks as deep as possible and to limit haloing around bright objects. It's a deliberate compromise: the TV more often chooses deeper blacks over maximally bright, point-like highlights. On one hand this is understandable, especially with a limited number of dimming zones, but on the other hand you should be aware that the HDR effect will not always be as strong as the peak brightness alone would suggest.

On the plus side, the colors are worth noting. The PFS LED filter used here, marketed by the manufacturer as QLED, produces suitably saturated colors. Our measurements showed about 94% coverage of the DCI-P3 gamut and about 74% of BT.2020, which is a solid result for this class.

Samsung QN80H is without a doubt a bright TV. In synthetic tests it breaks the 1000-nit barrier, which on paper already promises a solid HDR effect. In practice the screen really shows its claws, though it can't fully spread its wings (or its backlight 🤔) in every situation. The best impression comes from bright, expansive shots. Sunlit exteriors or heavily lit scenes look really good on it. Brightness then stays around 700 nits, which gives a noticeable step up in quality over standard SDR. Problems start in dark scenes with small, pinpoint highlights. The QN80H tends to heavily dim them, doing everything it can to protect black levels. On one hand we gain better contrast, on the other... we lose some of the dynamics and the sparkle of fine HDR details. The TV therefore has considerable potential, but the dimming algorithm can be too restrictive.

Color gamut coverage

Colors are good too. The QN80H uses quantum dot technology, and in our measurements it covered 93% of the DCI-P3 space and about 70% of BT.2020. Today those results won't exactly blow anyone away, but in real-world use they're more than enough to deliver vivid, natural-looking images in most movies and TV series. Colors are properly saturated and, after proper tuning, don't look artificial or overly aggressive.

As standard, we carried out color measurements in the best-calibrated mode, Filmmaker Mode, the one that is supposed to be closest to the creators’ intent. The A400 Pro, of course, also offers other picture modes, but in practice they suffer from much larger color errors and alter the image character more strongly. We won’t go into those modes in detail in this part of the test. So how does the factory color reproduction perform? In short: really very well. In fact, looking at our measurement results, it’s excellent. Both the white balance and the luminance response were set surprisingly precisely. The errors were so small that during testing we genuinely rubbed our eyes in disbelief. Such good out-of-the-box settings don’t happen often, even in TVs operating in Filmmaker Mode. All the more reason to praise TCL, because the A400 Pro right out of the box can produce an image very close to how the source material should look. The results were so good that you could easily think someone had already paid extra attention to that unit and tried to calibrate it.

Our nitpicking really comes down to just one thing. In SDR content the image was slightly brighter than the reference for a dark room, because the factory gamma was set closer to 2.3 than to 2.4. It’s not a big error and most viewers probably won’t even notice it.

However, it should be noted that we’re talking about our specific review sample. With factory colors there can always be some variation between units, production batches, or screen sizes. So we don’t assume that every A400 Pro will look identical straight out of the box.

The QN80H's factory settings were really good, especially compared with most TVs that come into our tests. Of course, we performed measurements in Filmmaker Mode, and that's the mode we recommend turning on right after the initial setup. In SDR material our unit was set up surprisingly well. The white balance was very even, colors looked natural, and the errors were so small they were hard to spot without measurement equipment. The only weak point was the gamma. In brighter parts of the image the TV brightened them a bit too much, so the picture sometimes lost a little depth. Even so, we'd like most TVs to look this good straight out of the box.

It was a bit worse in HDR. The white balance itself was still set correctly, so the problem wasn't with the colors but with how the QN80H managed image brightness. You could see that immediately on the EOTF chart. The TV brightened large parts of scenes too much, causing the brightest elements to blow out. Interestingly, at the same time very small points were often dimmed too much. As a result some fine detail simply disappeared. So the factory Filmmaker Mode in HDR isn't bad, but it's definitely not as well calibrated as in SDR.

Despite its excellent factory tuning, we couldn't resist checking how the TCL A400 Pro would respond to a professional calibration. Since the starting point was so good, we were even more curious whether we could squeeze even more out of this TV. And here we have to boast: we managed to bring our unit to absurdly low color errors. Results below 1 are something you don't see every day, even on very good TVs. Such results are more often associated with professional reference monitors than with a lifestyle TV for the living room. In terms of white balance and color reproduction, the A400 Pro after calibration simply performed outstandingly. The only thing we can pick at after a deeper analysis concerns the brightness behavior. The TV can manipulate luminance levels depending on the content being displayed, and quite often the image is a bit darker than it should be according to the standard. This most likely stems from the way the Mini-LED backlight and local dimming algorithms work in this model. However, that doesn't spoil the overall impression, because in terms of color precision alone the A400 Pro after calibration reached a level we really didn't expect.

The biggest difference after calibration was in HDR Filmmaker mode. SDR was already very good out of the box, so we didn't have much work to do there. In HDR, however, we managed to tame the way the QN80H handled brightness, as it had been over-brightening most scenes. After calibration the picture is calmer, more natural, and much closer to how a faithful picture should look.

Digital video processing is unfortunately one of the weaker points of the TCL A400 Pro. That doesn't mean the TV performs badly, but it's hard to call it anything clearly above standard. The upscaling itself is adequate: edges are smoothed fairly well, the image doesn't look overly sharp or pixelated, and lower-quality content can be watched without major discomfort. At the same time the overall look is slightly soft and it lacks the precision that the best image processors in more expensive TVs can deliver.

Much worse, however, is its handling of tonal transitions caused by heavy compression. TCL equipped the A400 Pro with a "Gradual Smoothing" feature that in theory should reduce visible color banding and artifacts in lower-quality content. In practice 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's best to leave this feature off. The A400 Pro handles basic image scaling decently, but if you often watch heavily compressed content with visible posterization, this model won't be one of the best choices.

Digital image processing in the Samsung QN80H is handled by the second-generation NQ4 AI processor. It's a chip we already know from earlier models and it still performs very well, especially with lower-resolution material. The image is effectively upscaled to 4K, but without excessive sharpening and without the feeling that the TV is forcing improvements on the source material.

The "Noise Reduction" feature also proves useful. It can noticeably reduce posterization and visible banding in poorer-quality material, particularly in low-bitrate streaming. However, it's important to remember that it doesn't work without side effects. It can remove some film grain and slightly smooth the image. So with a good-quality source we'd leave this feature off. If, however, banding and uneven tonal transitions bother you more than losing some grain, "Noise Reduction" can be a really useful addition.

The TCL A400 Pro is equipped with a 144 Hz panel, but in practice we're most interested in how it performs at 120 Hz. That's the refresh rate used by most consoles today, as well as many sports broadcasts and high-frame-rate content. In this range the TV performs quite well. Motion clarity is really good, especially after properly configuring the motion smoothing. The "Motion Clarity" feature improves smoothness. Its settings include two sliders that let you tailor the motion smoothing to your preferences — separately for lower- and higher-frame-rate material. That way you can achieve either a more cinematic look or a noticeably smoother picture. If you don't want to tweak settings manually, you can use presets such as low, medium, high, cinema, or nature.

Motion blur and motion handling on the QN80H are really good, mainly thanks to the fast panel. In 4K the screen refreshes at up to 144 Hz, and when switched to Full HD and connected to a PC it can reach as high as 240 Hz. That's new for Samsung TVs and a nice bonus for people who want to use the TV for PC gaming as well. We were more interested, however, in how the QN80H performs at 120 Hz, since consoles use that refresh rate. Here it's really good. The panel doesn't have a big problem with the smearing typical of VA panels, and slight trails behind moving objects are mostly visible on dark backgrounds. This is nothing that would interfere with normal sports viewing or gaming. The TV also includes a motion smoothing system that Samsung calls "Image Clarity." You can adjust judder reduction and blur reduction separately, so it's easy to tailor its operation to movies, sports, or your own preferences.

When it comes to features for gamers, the TCL A400 Pro performs excellently. The TV has practically everything you can expect from a gaming TV today: 4K support at high refresh rates, VRR, ALLM, correct implementation of HDR formats in games, including Dolby Vision, and HGiG. Because of that it works well with both next-gen consoles and PCs. Another plus is the inclusion of a Game Bar, a special panel with the most important settings for gamers. From it you can quickly check basic signal information, refresh rate, and active features, and also adjust the look and behavior of some settings to your own preferences. This is a solution that 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 ports out of four, and one of them also functions as eARC. In practice this means that if someone wants to connect two next-gen consoles and a soundbar, they may hit some limitations. In that scenario you'll have to either swap devices or use extra equipment, for example an AV receiver or a soundbar with HDMI inputs. Despite this, it's hard not to rate the A400 Pro very highly as a gaming TV. The gaming feature set here is really powerful.

Samsung QN80H is a TV that scores very well on gamer-oriented features. The biggest new addition for 2026 is DLG mode, which allows refresh rates up to 240 Hz when the image is switched to Full HD resolution. This option is aimed mainly at PC users, but it also shows that Samsung is still heavily developing the gaming side of its TVs. That’s not the end of the list of advantages. The QN80H has four full-featured HDMI 2.1 ports, which in this price range still isn’t standard. You can therefore connect multiple consoles, a PC, or a soundbar at the same time without worrying which input supports the full picture capabilities. The TV also supports VRR, ALLM, and HGiG, so it’s hard to fault its basic feature set. One downside remains the lack of Dolby Vision, which may matter especially to Xbox Series X owners. That said, it’s not a flaw that rules out the QN80H as a gaming TV. Samsung includes a feature still missing from most manufacturers: its proprietary motion interpolator, Game Motion Plus. It’s a motion interpolator that also works in game mode, allowing you to improve the smoothness of titles running at 30 or 60 frames per second without a drastic increase in input lag. In practice, Game Motion Plus can make a much bigger difference than Dolby’s processing, especially in more demanding games that don’t offer a 60 FPS mode. The image becomes noticeably smoother while controls remain responsive enough. So despite the lack of Dolby Vision, the QN80H is still one of the best-equipped TVs for gamers in its class.