Compare: TCL P7K / P79K vs TCL C7L

The time has come to gather all observations. The TCL P7K / P79K is a television that cleverly juggles compromises, offering much more in its price range than we could have expected. Its undeniable asset is the VA panel, guaranteeing deep blacks and high contrast, and the surprisingly rich package for gamers (with VRR and support for 120 Hz at lower resolutions) makes it a phenomenal proposition for console owners. The whole is tied together by the functional Google TV system. Of course, the low peak brightness means that HDR content lacks spectacular bursts, and the TV's performance in sunlit rooms is limited. And although, at its relatively low price, the P7K / P79K is quite a decent option, its biggest rival turns out to be… its more refined sibling, the P8K. Often, FOR a small additional payment, we get a device of a higher class – with a native 4K 144 Hz panel, significantly better audio system, and generally higher quality of operation, which is reflected in its much higher rating on our portal. Therefore, the final verdict must be as follows: if your budget is absolutely non-negotiable, the P7K / P79K will be a good and cost-effective choice. However, if you can afford to add a small amount, the P8K model will offer significantly more and will ultimately be a more satisfying investment.

The TCL C7L is an incredibly successful Mini-LED television and a fully deserved successor to the hit model C7K. The list of advantages of this device is truly extensive. At the top is the extremely high brightness of the panel. Thanks to this, the television handles brightly lit living rooms without any problems, offering a fantastic and dynamic image in HDR format. Huge applause is also due for the use of the new Super QLED coating – after professional calibration, the colours can be not only natural but also incredibly saturated. The best part is that the screen achieves this regardless of the scene displayed, which is often not the case with all TVs featuring RGB backlighting. The C7L is also a brilliant piece of equipment for gamers; it could even be said that it is a true "multimedia powerhouse." We get full support for consoles and PCs, refresh rates of up to 288 Hz, G-Sync, and low input lag, which doesn’t increase even when activating the demanding Dolby Vision Gaming mode. Everything is tied together by a well-optimised Google TV system, which in this generation of TCL devices operates noticeably smoother and more efficiently (at least that's the impression we got during our testing). Of course, the C7L is not a perfect device, and the manufacturer had to make certain compromises in this model. The biggest drawback of the C7L is the use of a less powerful image processor. Unfortunately, this translates to rather average digital processing and other design limitations, such as only two HDMI 2.1 ports. A more powerful chip has been reserved this year for the higher series, such as the C8L. From a business point of view, this is entirely understandable. Why? Because if TCL had included a better processor here, most people would probably not see any point in paying extra for a higher model. So even if certain compromises exist, the C7L series is once again shaping up to be one of the most cost-effective Mini-LED televisions this year. If you are looking for a versatile, extremely bright screen for movies, series, television, or gaming – literally for everything – and at the same time do not want to overpay for top series, then yes... the C7L is a brilliant choice that we can definitely recommend to you.

In the discussion about image quality, the conversation almost always begins with the issue of black depth and contrast, which are parameters that define the plasticity and realism of the observed world. Here, the TCL P7k/P79k immediately lays its strongest asset on the table – a VA panel. Its construction is what makes the native relation between the brightest and darkest parts of the image more than satisfactory, especially in the context of the price segment that this model represents. In the majority of scenes, the black achieved has a noble depth, which allows for building an engaging spectacle for the viewer. To illustrate the scale, it is worth mentioning that competing constructions based on IPS panels often offer results that are even four times, and sometimes five times, lower, which in direct comparison represents a chasm. Of course, when entering the territory of models oriented towards affordability, we must be aware of certain compromises. Therefore, we will not find an advanced local dimming system in the discussed television, which could further enhance the sense of contrast. However, the absence of this feature is fully understandable and constitutes a logical consequence of positioning the product in the market – this technology in TCL's portfolio for 2025 has been reserved for higher positioned, more prestigious series marked with the letter "C".

The TCL C7L is a Mini LED TV which, in the 65-inch model we tested, is equipped with over 1,000 local dimming zones. Combined with a proprietary VA panel (referred to by TCL CSOT as HVA 2.0), this delivers very respectable results for black levels and contrast. In most of the scenes we measured, black levels and contrast looked very good, and in the easiest shots the blacks were deep enough to even resemble those seen on OLED screens. This, of course, refers to the least demanding shots with large areas of black on screen. When more bright elements appear on screen and black no longer dominates, you can see that the TCL C7L, like most Mini LED TVs, has issues handling its local dimming zones.

This is particularly obvious on the black bars in films shot in the 2.35:1 widescreen format. A distinct halo effect, a bright glow, can appear on the black bars or around small bright objects. Contrast can then drop drastically, from lab-measured values of around 200,000:1 to about 10,000:1, which is quite noticeable in a completely dark room. It’s worth remembering that this should not be treated as a flaw of the TV but rather as a characteristic of Mini LED technology. Of course the effect becomes much less intrusive if you turn on even a small amount of diffuse light in the room, which I strongly recommend doing when watching any LCD TV.

When turning to the assessment of HDR performance, we must be clear and without marketing embellishments: the P7K/P79K is not, and was never intended to be, a master in this field. The maximum peak brightness that this panel can generate hovers around a mere 300 nits. This represents a threshold, a kind of thin red line between what can be considered a barely satisfactory HDR signal and what is, in fact, not much different from standard dynamic range (SDR), unfortunately leaning towards the latter. Synthetic tests found brutal confirmation in reality – our measurements taken during movie screenings showed that luminance in key bright portions of the scenes rarely exceeded the ceiling of 200-250 nits. Thus, this is not a television that would allow content realised in a wide tonal range to spread its wings, and this must be openly admitted.

Unfortunately, the issue of colour reproduction is presented with equal restraint. Although the manufacturer positions this model within the "QLED" family, thanks to the use of a PFS LED filter, the results do not match the heightened expectations. The coverage of the wide DCI-P3 colour gamut reaches only 86%. In the context of the market, this is at best an average result, as most devices that employ additional layers to expand the colour spectrum easily achieve values at a minimum level of 90-92%.

The TCL C7L is, without doubt, an extremely bright TV. In synthetic tests using static test patterns it can reach peak brightness of around 2800 nits. That's a truly phenomenal result, given the price bracket it occupies. Unfortunately, measurements with real film scenes are not as spectacular as the white-square tests. Brightness in real HDR footage on the C7L falls to around 1200 nits. That's still very good, because the vast majority of modern films are graded to that level. However, when small, pinpoint elements appear on screen, the brightness of those details drops dramatically, even to around 400 nits, which reduces the HDR impact. The TV does this deliberately to preserve black levels and avoid excessive blooming. This is somewhat understandable, but it also shows that Mini LED technology is not completely without compromises in this respect. As for the HDR effect itself, alongside brightness the key factor is, of course, colour. Thanks to the use of new 'super' quantum dots, the colours are simply superb and among the best on the market. The TV is able to achieve very wide coverage of the BT.2020 and DCI-P3 colour gamuts, matching the best RGB Mini-LED screens with ease. Best of all, the C7L can maintain such high colour saturation regardless of the scene being displayed, which is often problematic in competing RGB Mini-LED TVs.

Every accurate assessment of image quality must begin with selection of the most optimal factory mode. In the case of the tested model P7K/P79K, the choice was made without hesitation for the "Film" mode. It is this mode that presents an image closest to the intentions of the creators, avoiding both the exaggerated brightness of the dynamic mode and the excessive dimming known from eco settings. And it must be admitted that, for a device in this price range, the factory calibration is surprisingly decent, although it has not escaped a few missteps. The most noticeable flaw turned out to be the not completely correctly set white balance. A slight dominance of the blue component gives the image a subtly cool, cold character, thus deviating from the exemplary neutrality that the director wanted to show us. The television performs much better in reproducing the greyscale in the standard dynamic range – the gamma curve is nearly exemplary. The only minor reservation could be made regarding the darkest parts of the image, where a slight deviation from the norm causes a loss of some detail in the shadows. The most serious challenge for the TCL software, however, was interpreting the HDR signal, as illustrated by the course of the EOTF curve. The television follows its own, quite free path here – the darkest details are disproportionately brightened, after which there is a noticeable slowdown in the increase of brightness for midtones. Fortunately, most of these imperfections are software-related issues that can be eliminated. With this thought in mind, we began the process of professional calibration.

When it comes to out-of-the-box colours, what's new in TCL TVs, including the C7L model, is the addition of a picture mode called Filmmaker Mode. This is significant because such a mode was not previously available from this manufacturer. As the name suggests, this setting is meant to present the picture with the filmmaker's full intent. After our tests we can confirm that it is, without doubt, the best built-in mode on this TV if you want faithful colour reproduction straight out of the box. However, we certainly wouldn't say it's perfect. Like most devices on the market, this C7L also had some factory calibration errors. The white balance in Filmmaker mode drifted towards a slightly greenish-yellow tint, caused mainly by an excess of the green component and a noticeable shortfall in blue. Of course, this won't be a major drawback for the average viewer, but if you care about perfect whites, natural skin tones and getting the full potential out of the structure of those new "super" quantum dots, the TV really needs professional calibration.

The calibration process turned out to be spot on, particularly in the context of standard dynamic range (SDR) content. We successfully mitigated the television's tendency to emphasize cool tones, restoring the whiteness to its natural neutrality. Moreover, precise adjustments allowed us to correct a slight error in the gamma curve, ensuring that the darkest parts of the image regained their proper depth, without any trace of unnatural brightness. The effects are measurable and impressive – in the ColorChecker test, the overwhelming majority of colour reproduction errors fell below the perceptual threshold, achieving a deltaE value of under 2. This is a result that pricier models would not be ashamed of. Unfortunately, when it comes to HDR content, we encounter a barrier in the form of the inherent limitations of the panel itself. And although we managed to bring the colours into line, the software's characteristics mean that the television still adapts brightness in its own way, as evidenced by the persistent, non-standard EOTF curve. In summary, calibration adds immense value, but one must be aware that it cannot overcome certain physical barriers. The slightly elevated black level, due to the lack of local dimming, along with limited peak brightness, means that HDR content may not always be able to showcase its full potential. This is simply not the primary task of this display; its true strength, especially after professional tuning, lies in the viewing of SDR material.

After professional calibration we managed to greatly improve the situation in the factory Filmmaker Mode. After our corrections, the errors in the ColorChecker test and across the wide colour gamut fell below the threshold of human perception, that is below a value of 3, which is a very good result. The TCL C7L definitely benefits from such a procedure in terms of colour fidelity, and it's hard to deny. Brightness management for HDR content looks a little worse after calibration, though. As I described earlier, even though we set this model up correctly, when you play real film scenes the TV can handle its brightness in a rather peculiar way. It often brightens some elements on screen contrary to the creator's intent, which is clearly visible in the EOTF traces measured from specific films. Despite this defect, or rather a specific characteristic of the television, one thing you can't fault is that after calibration the C7L was able to reproduce colours accurately.

The issue of the fluidity of tonal transitions, or popular grading, is another area where the P7K / P79K evokes mixed feelings and surprises with its dual nature. If we were to evaluate solely its ability to render smooth colour gradients, we would undoubtedly give it a solid score of 8/10. Unfortunately, this positive image is marred by the use of very aggressive and unpleasant dithering. This artefact is particularly noticeable on demanding test patterns – such as the one depicting an actor submerged in red water – where rough, unnatural texture appears on uniform colour surfaces, betraying the digital nature of the image. This is all the more disappointing, as it is not a new issue. It seems to be a sort of inheritance from previous generations of budget TCL models, which is a pity, as it represents a flaw on what is fundamentally a quite competent image and is a mistake that could have been avoided.

Another aspect worth discussing is the smoothness of tonal transitions. Here it must be honestly admitted that on the TCL C7L it simply looks good. In most scenes, and especially in the brighter shots, there are absolutely no banding issues. In native 4K HDR content the image is clean and the transitions between shades are very smooth. It looks just as good in Dolby Vision, where during our tests we did not notice any digital artefacts or ugly colour posterisation. You could, if you wanted to be picky, point to very dark scenes where a heavily compressed signal is being displayed on screen. Under those conditions the C7L can sometimes reveal minor imperfections, but in this model that is not something that really catches the eye, especially during everyday film viewing.

After a series of harsh evaluations, fortunately, the time comes for praise, and this is due to the TCL AiPQ image processor for its work in the field of digital processing and content scaling. It should be noted right away that we are not talking about the level known from flagship designs; however, in the price segment represented by the P7K/P79K, the results achieved are more than solid. The feature for smoothing tonal transitions performs particularly well, effectively eliminating posterisation, which are the characteristic bands often visible in highly compressed materials, for example, from the ChooseTV service. The algorithm adeptly removes unwanted gradients, which ultimately looks really good. The television also handles upscaling competently, which is the task of elevating low-resolution materials to 4K standard. The resulting image, although it may initially seem a bit too sharp, fortunately, is not a problem. The software allows for free adjustment of this parameter using a sharpness slider, making it easy to customise the final appearance to personal preferences.

This can be seen as, to some extent, the Achilles' heel of the C7L. Unfortunately, this TV uses the older MediaTek Pentonic 700 chip, which has never been famed for outstanding digital image processing. You can clearly see that in the behaviour of the progressive smoothing function, the feature responsible for reducing jagged edges and removing digital noise. It simply performs very poorly. When set to low, its effectiveness is almost non-existent. The only small plus is that the algorithm does not further spoil the picture or blur details unnecessarily. Upscaling, that is scaling lower-resolution content to 4K, performs slightly better. It is simply adequate and does not stand out against the competition. There is no denying that the C7L would benefit greatly in this regard if the manufacturer opted for the newer Pentonic 800 processor, which is now appearing in an increasing number of rival models.

The issue of fluidity and sharpness of the image in motion is inextricably linked to a fundamental parameter of the matrix, and in the case of the TCL P7K/P79K, we are dealing with a panel with a native refresh rate of 60 Hz. This specification defines its capabilities from the outset and makes it difficult to unequivocally recommend it to enthusiasts of dynamic sports broadcasts. During fast camera movements, the image loses sharpness, and the panel also shows a slight tendency to smearing, which may be noticeable to more sensitive viewers. Fortunately, not everything in this aspect has been left to chance. The manufacturer has implemented a simple motion smoothing system, which is primarily used in film material recorded at 24 or 30 frames per second. Thanks to a dedicated slider, users can decide for themselves the final character of the motion – from maintaining a fully cinematic, slightly juddery image to achieving a very smooth, almost theatrical effect. It is a simple but effective tool that allows users to tailor the viewing experience to their own preferences.

The TCL C7L uses a native 4K panel with a 144 Hz refresh rate, which at lower resolutions when connected to a PC can even reach up to 288 Hz. These are, of course, very high figures and impressive on paper, but bear in mind that almost all the dynamic content you’ll watch on this TV will still run at around a maximum of 120 Hz. To rein in that motion, the TV’s menu includes a motion-smoothing system called "Motion Clarity". It offers several preset modes, including a user mode that we strongly recommend you set manually using our tried-and-tested guides on our YouTube channel. There are two key sliders available. The first, "Blur Reduction", is responsible for cutting motion blur and improving sharpness in dynamic 60-fps material, such as sports broadcasts. The second slider, "Flicker Reduction", lets you add artificial frames to films and series shot in cinematic 24 or 30 frames per second. This, of course, can completely eliminate the irritating judder that appears during camera movement.

Although on paper the native 4K@60Hz panel might suggest that the TCL P7K/P79K is not a television tailored for gamers, the reality is surprisingly different. On the contrary, the manufacturer has ensured a rich package of features that make it a very friendly companion for next-generation consoles. Onboard, we find key technologies such as ALLM, which provides automatic switching to low latency mode, and VRR, or variable refresh rate, which eliminates screen tearing. The list is complemented by support for Dolby Vision Gaming and a simple yet functional Game Bar. However, the real and extremely pleasant surprise is something else. It turns out that the television easily supports a high refresh rate signal of 120 Hz but at lower resolutions – 1080p and 1440p. This is fantastic news for console owners, who know well how rarely games run in native 4K at a full 120 frames per second. The ability to choose between higher resolution and doubled smoothness is therefore an extremely sensible compromise.

In summary, although the P7K/P79K may not be the target screen for the most passionate tournament players, for the casual or occasional console user, it offers a package of options that is hard to find among many competitors at this price.

When it comes to gaming, the TCL C7L is simply an outstanding TV for players. Thanks to two HDMI 2.1 ports with full 48 Gbps bandwidth, you get access to all the key features required by console owners and powerful PC rigs. There’s a well-working ALLM mode with very low input lag and VRR frame synchronisation that operates over an impressive range from 48 to 288 Hz. Importantly, unlike some rivals, TCL has properly implemented the console HDR10 HGIG profile and supports Dolby Vision in games. The package is completed by a very well designed gamer panel, the Game Bar, which even lets you edit its appearance and change the theme so it perfectly matches the style of your console.

The only thing you can, and even should, criticise is that the TV offers only two full-spec HDMI 2.1 ports, while the other two are older HDMI 2.0. That creates quite a logistical problem. Why? Because one of the fast ports also handles the return audio channel eARC. In practice this means that if you connect a soundbar or home cinema system to the TV, you’ll be left with just one free HDMI 2.1 socket. If you have two consoles at home, or a console and a powerful PC, unfortunately you’ll have to give something up or keep juggling cables at the back of the case while trying to maintain convenient control of the audio system.

Complementing this rich package for gamers is a parameter that has a direct impact on comfort and performance in gameplay – input lag. Already in native 60 Hz mode, the television boasts an excellent result of just 15 ms. However, the real magic happens when switching to 120 Hz mode, where the lag drops nearly by half, reaching values below 10 ms. Such responsiveness ensures that every command from the controller is translated to the screen in the blink of an eye, which will be appreciated not only by professionals but by anyone who values smooth and direct interaction with the game.

It's worth taking a look at the raw numbers here, because in terms of signal latency the TCL C7L is right at the top of the market. Our measurements showed that the input lag is extremely low and for a 60 Hz signal it is only about 10 ms. When we step up and run a game at 120 Hz, the delay drops to an almost imperceptible 6 to 7 ms. More importantly, the TV maintains these figures even after enabling Dolby Vision in games.

We finally come to an area that can undoubtedly be described as the biggest Achilles' heel of the TCL P7K/P79K – its compatibility with PC. It is paradoxical in that, on paper, everything looks promising. The presence of G-Sync and support for high refresh rates at lower resolutions might suggest that it would also be a great monitor. Unfortunately, practice brutally verifies these assumptions. The key issue is the lack of support for full 4:4:4 chroma sampling. In everyday use, this translates to terrible font rendering quality – these, especially the coloured ones, become jagged, surrounded by artefacts, and simply poorly legible. This is not the end of the story, as in PC mode, the problem of aggressive dithering also becomes evident, giving the entire image an artificial, overly digital appearance. The only consolation in this situation is the fact that in games we can take advantage of the additional hertz and G-Sync technology, but these are not advantages that could compensate for the fundamental deficiencies in displaying a static interface. The verdict is therefore clear: while as a screen solely for gaming on PC it might still hold its own, as a monitor for work or browsing the internet, the P7K/P79K simply performs poorly.

As for gaming on PC, as I mentioned earlier, it's genuinely hassle-free. The TV handles high refresh rates without a hitch: full 4K at 144 Hz, and in Full HD it can even reach 288 Hz. On top of that, G-Sync and FreeSync work without any issues. For PC gamers, the C7L can therefore serve as an excellent, gigantic monitor.

Typical office work involving text fares a bit worse, because the panel behaves rather oddly in those circumstances. When the highest refresh modes are enabled, namely 144 Hz and 288 Hz, the readability and sharpness of dark text on a light background are rather mediocre, with fonts becoming slightly blurred and jagged. Fortunately, this can be fixed very easily by changing the display refresh rate in your graphics card settings to a steady 120 Hz. Then the text becomes perfectly sharp again, which is definitely worth remembering if you plan to use the C7L as a work screen.

When it comes to viewing angles, we enter the territory where VA panel technology dictates unavoidable conditions. As expected, this is the weak point of this model. It is enough to move away from the screen axis to observe a gradual degradation of the image: colours begin to fade, contrast noticeably drops, and black loses its depth. In direct comparison with IPS panels, which are renowned for their generosity in this aspect, the VA panel must concede superiority to its competitor. Is there any upside to this? Paradoxically, yes. Poor viewing angles are, after all, the price we consciously pay for the fundamental advantage of this technology – a significantly higher native contrast and deeper blacks when viewed head-on. Thus, it can be said that this is a television that favours viewers sitting in the 'ideal' spot, offering them a maximally vibrant image at the cost of versatility.

Unfortunately, the strong native contrast of the HVA 2.0 panel comes at a price. It's the viewing angles, which on the C7L model are simply poor. That's all, of course, due to the use of the mentioned VA-type panel. It's an inherent characteristic of that technology and something you have to bear in mind when buying. If you sit directly in front of the screen, the picture will delight you with its depth, but just shift a few dozen degrees to the side on the sofa and the colours will immediately start to fade. By choosing this model, you accept a classic market compromise: you get deep blacks and superb contrast, but you sacrifice viewing angles.

The final practical test for any television is its daily performance in daytime conditions when it has to compete with ambient light. In this competition, the TCL P7K / P79K starts with a certain advantage in the form of a satin finish on the screen. Its structure handles direct reflections quite decently, diffusing them and protecting the image from excessive fading of colours or lightening of blacks. However, the passive struggle against reflections is one side of the coin. The other is the active ability to 'break through' bright surroundings, and here one of the model's key limitations comes to light. The previously mentioned peak brightness of around 300 nits is simply too low to ensure a fully comfortable and dynamic viewing experience in a brightly lit living room. In such conditions, the image may lack punch, and scenes with lower brightness can lose their clarity.

It’s also worth mentioning how the TCL C7L performs during everyday viewing in a sunlit living room. As we’ve already established, it’s an extremely bright TV, and it’s precisely thanks to such a huge luminance headroom (up to 2400 nits in SDR!) that it can perform brilliantly in very bright rooms, the picture simply cuts through the light entering the room without any problems. The only thing to watch out for are direct reflections on the screen. The coating used on the panel this year is noticeably glossier than the one we saw on last year’s C7K. The screen suppresses point reflections much less effectively, which, in unfavourable conditions, for example when a window is directly opposite the TV, may be fairly irritating for some users. Even so, in terms of raw brightness the C7L is simply a beast for bright living rooms.

Smart Features – the Power of Google TV

The heart and operating brain of the TCL P7K / P79K is the Google TV system, which is a significant advantage in itself. This platform opens access to an almost limitless library of applications from the Play Store, ensuring that we won't miss any key streaming service. Integration with other devices is exemplary – Apple users will appreciate the seamless collaboration thanks to AirPlay, and Windows and Android users can easily utilise screen mirroring features. One should also highlight Google Assistant, which performs exceptionally well with voice search in Polish, remaining one of the most effective and convenient solutions of its kind on the market. The system’s performance on the tested model can be described as "above average." The interface is mostly smooth, but during tests, there were occasional slowdowns and even sporadic "freezes" that required a moment of patience. Minor glitches can also be seen in the translation of some system messages, which can be clumsy – however, these are minor oversights on TCL's part that do not affect overall functionality.

Classic Features

In the era of smart systems, traditional television functions often take a back seat, and this is also the case here. A significant advantage is the inclusion of a classic remote control with a numeric keypad, which does not require precise aiming at the screen for communication, significantly enhancing user comfort. The presence of Bluetooth technology for connecting external devices, such as headphones or speakers, should also be regarded positively. However, this is essentially where the list of conveniences ends. It is evident that TCL has almost put everything on the Google TV card, treating classic functions as an absolute minimum. Therefore, we will not find options to record programmes from built-in tuners to a USB drive or the once-popular PiP (Picture-in-Picture) feature. This is, therefore, a basic package that simply works but does not offer anything beyond what is essential.

Google TV i Smart TV

The multimedia heart of the TCL C7L is, of course, the Google TV operating system, which provides access to a vast app library and all the most popular streaming platforms on the market. The Smart TV in this model runs smoothly, offering full support for useful network features such as Apple AirPlay and Chromecast. A huge and very pleasant surprise, however, is the software's overall polish. We noticed that Google's system on the new C7L runs considerably smoother and faster than on last year's TCL models. This is largely thanks to better optimisation for the launch. Unnecessary pauses and minor interface stutters known from older models seem to be a thing of the past.

Funkcje telewizyjne

As far as traditional over-the-air or cable TV is concerned, the TCL C7L does not offer many additional advanced features. It's simply a basic receiver. The manufacturer has not attempted any revolutionary solutions here, so apart from the traditional programme guide you won't find anything special. A big nod to traditional viewers is the classic remote control. Contrary to the prevailing trend for minimalism, it still features a full numeric keypad, which makes switching channels much quicker.

The built-in media player in the P7k/P79k model is quite a puzzling case, placing us in a rather unusual situation. On one hand, its engine manages to decode most popular video formats, which is obviously good news. On the other hand, we encountered a surprising and frustrating flaw – the default app has a fundamental issue with correctly displaying Polish diacritical characters in subtitle files. Instead of letters like "ą," "ę," or "ż," empty squares or random, unreadable symbols appeared on the screen. Fortunately, thanks to the flexibility of the Google TV system, this issue can be easily circumvented. Installing an alternative, advanced player, such as the tried and tested VLC or KODI, fully resolves this inconvenience. The situation is particularly odd since we didn't encounter such a flaw in other TCL models we tested previously. We are therefore dealing with an obvious software oversight, which we hope will be fixed in a future update.

Finally, in the multimedia section it is worth mentioning playback from external USB drives. During our tests we did not encounter any unpleasant surprises; the built-in player handles all common video and audio formats exactly as it should. Interestingly, the TCL C7L also had no problem playing photos saved in Apple's native HEIC format. This is an extremely rare feature in manufacturers' built-in TV apps. And although Google TV of course lets you install external media player apps, in the case of the C7L the built-in tool is so well polished that installing additional software is unlikely to be necessary.

In terms of the built-in audio system, the TCL P7k/P79k presents a level that can be described as functional and correct, but lacking audiophile ambitions. The speakers play quite loudly, and the dialogues in films and television programmes are delivered clearly and without distortion, which is crucial in everyday use. However, the soundstage definitely lacks a foundation in the form of low tones. This is a direct consequence of the absence of a dedicated subwoofer – an element that in the higher P8K series, represented by a large Onkyo subwoofer at the back of the cabinet, constituted the strength of its sound. Here, that element is simply missing, which makes the sound seem flatter and devoid of the depth that creates a cinematic atmosphere. We also noticed a peculiar aspect in the software – when attempting to set the maximum volume, the television automatically reduces it. It is difficult to determine definitively whether this is a form of protection against distortion or a minor software glitch; nonetheless, it’s a shame because the power reserves seem to be slightly greater.

The TCL C7L simply sounds fairly good and does the job competently. In terms of sound quality itself, practically nothing has changed compared with last year's C7K model. The manufacturer still uses a Bang & Olufsen-branded speaker system in a 2.2 configuration. The only thing that can be quite irritating during viewing is that when you raise the volume to higher levels, roughly above 50% on the scale, the volume no longer corresponds to the on-screen indicator. The B&O audio system works well for everyday viewing of current affairs or series at moderate volume, but if you're looking for better sound it's worth buying at least a basic soundbar for the C7L.

TCL P7K / P79K vs TCL C7L

Advantages

Disadvantages

Our verdict

TV appearance

Where to buy

Contrast and black detail

HDR effect quality

Factory color reproduction

Color reproduction after calibration

Smoothness of tonal transitions

Image scaling and smoothness of tonal transitions

Blur and motion smoothness

Console compatibility and gaming features

Input lag

Compatibility with PC

Viewing angles

Daytime performance

Panel details

TV features

Classic features:

Smart features:

Sound connection options

Supported audio formats (external HDMI eARC audio):

Senior accessibility

Smart Features – the Power of Google TV

Classic Features

Google TV i Smart TV

Funkcje telewizyjne

Apps

Playing files from USB

Sound

Sound Quality Test

Acoustic Measurements