Sharp GP6765 vs TCL A400 PRO

In movie mode, the television Sharp GP6765 reaches a brightness level of 300 nits; unfortunately, this is quite an average result. Such brightness is closer to the standard SDR image than what full HDR experience should offer. As a result, the television is unable to convey the full depth and dynamism of the picture that one might expect from a good HDR mode. Visual effects that in other models are vivid and detailed may appear muted here, and high-contrast scenes won’t look as impressive. However, it's worth noting that when comparing this result with televisions in this budget, it is a decent score. A positive feature is the fact that the television supports a wide colour gamut of DCI-P3 at 92.5% thanks to the implementation of quantum dots (Quantum Dot/QLED). This is quite a respectable result, especially in this price range. As a result, colours are vibrant and more saturated, which certainly impacts the image quality, although it doesn't fully save the HDR experience due to the limited brightness.

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 deliver a noticeably more appealing picture than in SDR. However, it’s not a level that dazzles by brightness alone. The A400 Pro is not one of those TVs that bombard the viewer with a powerful flash in every dramatic scene. The biggest limitation is visible with small bright elements on a dark background. Because of fairly aggressive zone control, 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. It should be added, though, that this isn’t done without reason. The A400 Pro does this to keep black levels as deep as possible and to limit the halo effect around bright objects. It’s a deliberate compromise: the TV more often opts for deeper blacks rather than maximising point highlights. On the one hand this is understandable, especially given a 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, delivers suitably saturated colours. Our measurements showed about 94% coverage of the DCI-P3 gamut and around 74% of BT.2020, which is a solid result for this class.

Sharp GP6765 was launched in movie mode, which is the best setting for colour reproduction. Unfortunately, even so, the quality is still far from ideal. Starting with the white balance, in SDR mode the graph shows significant increases in the red colour. This effect can make the image appear slightly yellowish, leading to distortion of natural skin tones. As a result, viewers may notice that some scenes seem unnatural, and colours lose their authenticity. In HDR mode, the situation changes dramatically – the dominant colour becomes blue. Such a strong shift towards blue also negatively impacts the colour balance of the image, which can lead to a loss of detail in cool tones. Viewers may feel that the image is somewhat cold and out of balance, which is further highlighted by the fact that the television does not achieve optimal colour reproduction. Tests conducted using the Colour Checker tool confirm these shifts in several tested samples.

When it comes to contrast, in HD mode the range shows a significant jump at the beginning of the graph, but then remains close to the reference line at 2.4. This means that in most scenes, the television is able to deliver a satisfactory level of contrast. For the viewer, this means better perception of details in shadows and greater depth of the image, which affects their overall viewing experience of movies and TV shows. In HDR mode, however, the EOTF curve shows large fluctuations both at the beginning and at the end of the graph. Such fluctuations can lead to inconsistencies in detail reproduction in bright and dark areas of the image. For the viewer, this means that in scenes with intense light, such as explosions or dynamic actions, essential details may disappear and the image may appear blurry. Conversely, in darker parts of the image, the lack of clear differences in shades can cause details to blend into a uniform patch, which significantly reduces the viewing quality. Although movie mode offers the best factory settings in the GP6765, both in the context of colour reproduction and contrast, significant problems do exist.

As usual, we carried out colour measurements in the best‑tuned picture mode, Filmmaker Mode, the one intended to be closest to the creators’ intentions. The A400 Pro, of course, also offers other picture modes, but in practice they show much larger colour errors and interfere more with the image character. So we won’t cover them in detail in this part of the review. How does the factory colour reproduction fare? In short: really very well. In fact, looking at our measurements, it’s excellent. Both the white balance and the luminance response were set surprisingly precisely. The errors were so small that during the measurements we genuinely rubbed our eyes in surprise. Such good factory settings don’t happen often, even in televisions running Filmmaker Mode. All the more reason to praise TCL, because the A400 Pro straight out of the box can produce an image very close to how the source material should look. The results were so good you could easily think someone had already given this unit extra attention and tried to calibrate it. Our one bit of nitpicking comes down to a single issue. In SDR material the image was slightly brighter than the reference for a dark room, because the factory gamma was set closer to 2.3 than 2.4. It’s not a large error and most viewers probably won’t even notice it. We should note, however, that we are talking about our specific test unit. There can always be some variation in factory colour between individual units, production batches or screen sizes. We do not assume every A400 Pro will look identical straight out of the box.

After calibration, in movie mode, the white balance on the Sharp GP6765 TV for SDR content improves significantly. All the lines on the graph come closer to the reference line. Although they are not perfectly straight, the achieved results are satisfying, considering the price range of this model. Such an improvement in white balance translates into a more natural and accurate colour reproduction, positively affecting the overall visual experience and immersion in the films being watched. Regarding the colour gamut, the initial jump on the graph was not removed, however after this error, the rest of the lines represent the expected effect much better, making the image more coherent and pleasant to view.

In the case of HDR content, the white balance performs slightly worse compared to SDR content, but it is still significantly better than before calibration. The improvement in white balance in HDR contributes to greater colour consistency, making watching films more enjoyable, despite some shortcomings that may occur. Speaking of contrast, it is difficult to claim significant improvement. Our specialists noted that the lack of control over dynamic tone mapping settings prevented achieving significant improvement in EOTF, leading to uneven brightness reproduction.

Despite some shortcomings related to the lack of settings options for dynamic tone mapping, the Sharp GP6765 TV has gained a new face after proper calibration. The improved white balance and better colour reproduction in SDR mode have made the image more natural and pleasant to the eye. Although there are still areas that require improvement, especially in HDR content, the TV offers satisfying visual experiences, making it an interesting choice in its price range.

Despite the outstanding factory tuning, we couldn't resist checking how the TCL A400 Pro would respond to professional calibration. With such a strong starting point, we were especially curious whether we could squeeze even more from this TV. And here we have to boast: we managed to bring our sample to absurdly low colour errors. Results below 1 are something you don't see every day, even on very good TVs. Such outcomes are more often 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 after calibration simply excelled. The only thing we can pick on after closer analysis concerns the brightness response. The TV can vary the luminance level depending on the content being displayed, and quite often the picture is a little darker than it should be according to the reference. This most likely stems from the way the Mini-LED backlight and the local dimming algorithms work in this model. That said, it doesn't ruin the overall impression, because in terms of colour precision the A400 Pro after calibration reached a level that was genuinely hard to expect.

On the Sharp GP6765 television, the “10-bit colour reproduction” feature performs well in the tested scene with light bulbs. Setting this option to “medium” yields satisfactory results, as there are no issues with grain smoothing or blurring of key image elements. The “low” setting also delivers positive results, providing a clear image without adversely affecting details. Such smoothing options for tonal transitions contribute to enhanced visual quality, allowing for more natural colour transitions.

In terms of image scaling, the Sharp GP6765 television has its strengths, such as the absence of overscan when displaying test material. This allows viewers to enjoy a full image without losing any details from the edges. However, in the tested scene with the model, some shortcomings arise. The branches or trousers do not look their best. Their outlines appear slightly jagged, suggesting that effective edge smoothing techniques were not applied. This can make some details look somewhat distorted, which may affect the overall visual experience.

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’s hard to call it anything clearly above standard. The upscaling itself is acceptable: edges are fairly well smoothed, the picture does not look overly sharp or “pixelated”, and lower-quality material can be watched without major discomfort. At the same time the overall image has a slightly soft character and you don’t see the kind of precision that the best image processors in more expensive TVs can offer.

Handling of tonal transitions caused by heavy compression is much worse. TCL equipped the A400 Pro with a “Gradual Smoothing” feature that in theory should reduce visible colour banding and artefacts in lower-quality material. In practice, however, its effectiveness is very limited. It does not improve tonal transitions in any noticeable way, and at higher settings it can further smooth image detail, giving it an artificial, slightly blurred character. For that reason we think it’s best to leave this feature off. The A400 Pro copes decently with basic image scaling, but if you often watch heavily compressed material with visible posterisation, this model will not be one of the best choices.

When it comes to blur and motion fluidity, the Sharp GP6765 television performs quite averagely. It is equipped with a 60 Hz panel, which works well for films. The TV features a motion smoothing function called "Motion Enhancement". With this feature, we can control the fluidity of the motion, allowing us to choose whether the image should appear in a cinematic frame or be more fluid - theatrical. This smoothening function should satisfy most users who focus on film content. However, in the case of sports or games, the Sharp does not perform at its best. In the tested scene with the UFO alien, there is noticeable blurriness, suggesting that the low response time of the panel negatively affects the sharpness of moving objects. Such effects can be particularly frustrating during dynamic sequences where fast movements are common. For those who prefer watching sports or intense video games, the limitations in motion fluidity may be discouraging, making the Sharp GP6765 not necessarily the ideal choice in this category.

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 most consoles, as well as many sports broadcasts and high-motion sources, are limited to today. In that range the TV performs quite well. Motion clarity is really good, especially after properly configuring the motion smoothing. The 'Motion Clarity' function improves smoothness. Its settings include two sliders that let you tailor the motion smoothing to your preferences, separately for low-frame-rate and high-frame-rate content. This allows you to achieve either a more cinematic look or a noticeably smoother image. If you don't want to fiddle with manual configuration, you can use built-in presets such as Low, Medium, High, Cinema or Nature.

The functionality of Sharp's GP6765 for gamers leaves a lot to be desired. Although this model is equipped with HDMI 2.1 ports, which theoretically should offer a range of modern conveniences, in practice the situation is much worse. The only feature that truly utilises the capabilities of this standard is Auto Low Latency Mode (ALLM). Unfortunately, the lack of support for key features such as Variable Refresh Rate (VRR) or HDR Gaming Interest Group (HGIG) makes this TV a less appealing choice for gamers. VRR is essential for eliminating issues with tearing and stuttering, which is particularly important in dynamic games where smoothness of image is crucial. Meanwhile, HGIG allows for optimal HDR reproduction, increasing immersion and visual quality. Although it might seem that the implementation of Dolby Vision will bring significant benefits, for gamers it is completely useless due to the very high input lag in this mode.

One could say that the presence of HDMI 2.1 ports in Sharp GP6765 is a marketing trap that can mislead users into thinking that the HDMI standard automatically entails all its conveniences. Expecting full functionality that should accompany HDMI 2.1 may lead to disappointment.

In terms of gaming features the TCL A400 Pro performs brilliantly. The TV has practically everything you’d 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‑gen consoles and PCs. Another plus is the inclusion of a Game Bar, a dedicated 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 customise the appearance and behaviour of some settings to your preferences. It’s 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 criticise 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 serves as eARC. In practice this means that if you want to connect two next‑gen consoles and a soundbar you may run into some limitations. In that scenario you’ll need to either swap devices or use extra equipment, such as an AV receiver or a soundbar with HDMI inputs. Even so, it’s hard not to rate the A400 Pro very highly as a gaming TV. The gaming feature set here is genuinely powerful.