LG 55 B4 vs Hisense U7Q PRO

The HDR brightness performance of the LG B4 is impressive, even though it doesn't surpass 1000 nits. Its luminance stability is consistently strong across various scenarios, delivering a reliable viewing experience. The only instance where the TV shows slight weakness is in scenes with large areas of bright white, which has long been a challenge for OLED technology. However, perfect contrast, deep blacks, and excellent brightness ensure a fully immersive HDR experience. Furthermore, the TV’s remarkable 99% coverage of the DCI-P3 colour gamut enhances its colour vibrancy, making images appear rich and visually striking. This level of colour accuracy and brightness balance firmly places the LG B4 among the top choices for HDR content.

U7Q PRO is truly a bright television. In synthetic tests, it achieved over 1500 nits, which is an outstanding result for this price range. Such brightness – at least in theory – allows for displaying HDR content as intended by creators, even in more demanding scenes with strong light. In practice, it can be very good, but not always perfect. In bright scenes with a large surface area – such as the test screen with intense sunlight from the movie "Pan" – U7Q PRO makes a huge impression. It can almost blind with light, which is definitely an advantage in the context of HDR content. Unfortunately, this is not always maintainable when a lot of small bright details appear on a dark background. In such moments, local dimming algorithms decide to dim some bright elements to maintain good black levels – and the side effect is that some details simply disappear from the frame. This is a classic compromise in mini-LED televisions – and U7Q PRO is no exception. However, with such a large number of dimming zones, one could expect a somewhat more mature algorithm responsible for controlling them. Fortunately, the overall reception of HDR content is very positive. U7Q PRO is not only bright but also colorful; thanks to the PFS LED (QLED) coating, the coverage of the DCI-P3 color palette is at 95%, and BT.2020 is around 73%.

The best factory preset offered by LG B4 is the "Filmmaker" mode, which we used throughout our testing. Straight out of the box, the TV delivered fairly accurate colour reproduction. However, the most significant issue in both SDR and HDR content was the white balance. In SDR, there was a noticeable red dominance, giving the image a distinct yellow tint, particularly evident in skin tones and whites. In HDR, this red hue persisted, but the lack of blue also introduced a greenish tint in certain scenes. Additionally, we observed some inconsistencies in grayscale and colour accuracy. Despite these shortcomings, the overall picture quality was still solid for most viewing scenarios.

We tested the U7Q PRO in the best possible picture mode that this model offers – Filmmaker Mode. And indeed, it is this mode that performs best in terms of color reproduction. But that doesn't mean it's perfect. In our test unit, both in SDR and HDR content, the image had a slightly cooled tone. The white balance was shifted towards blue, which made the overall impression feel a bit "cooler." It's not glaring, but definitely noticeable – especially on white backgrounds that, instead of neutral, appeared slightly bluish. Additionally – as we mentioned earlier – the television tends to slightly brighten and oversaturate the image, which is also confirmed by the gamma and EOTF charts. All of this together means that without calibration the image may seem a bit unnatural – too cool, with slightly exaggerated dynamics. That's why we decided to conduct our own calibration – and its effects and charts can be seen below.

LG B4 has long been known for offering advanced calibration tools, and it remains one of the few manufacturers that allows such in-depth image adjustments. Thanks to these tools, we calibrated the device to an exceptional standard. The result was incredibly low deltaE errors, considered at a reference level. Both SDR and HDR content now display exactly as the filmmaker intended. This level of precision is one of the reasons LG TVs are frequently used as preview monitors in graphic design and post-production studios.

Thanks to calibration, we managed to tame the white balance in both SDR and HDR content. For SDR materials, the effect is really very good – the image becomes neutral, consistent, and simply pleasant to view. Everything looks as it should.

The performance in HDR is a bit worse. Although the white balance looks correct and overall the image gains in naturalness, unfortunately, delta E errors remain noticeable. Why? Because Hisense does not give us full control over how the U7Q PRO manages brightness in HDR mode. This is where the limitation appears. When we look at the EOTF curve for HDR content, we can clearly see what we mentioned earlier – at the beginning of the graph, there is a noticeable drop, meaning the television dims the smallest sections more than it should. On the other hand, the brightest elements can be illuminated a bit too much. As a result, some details are lost, others are too aggressive, and overall control over brightness does not always align with what we are trying to achieve during calibration.

Does the image look better after calibration? Definitely yes, in terms of color. But when it comes to managing brightness in HDR, we have to accept that the Hisense U7Q PRO will do it its own way.

In this section, we will revisit the smooth transition function while also examining how the TV handles lower-quality content. As we’ve found, the setting responsible for smooth gradation is generally effective, though it does have its drawbacks. While the function works well in SDR content, it becomes less useful in HDR content. Even at the lowest setting, it can blur important details, so we advise against using it in such cases.

The image scaling on the LG B4 is assessed moderately positively. While there is no noticeable edge doubling, the image tends to be somewhat "soft." This can be adjusted by tweaking the sharpness slider to improve the clarity.

If someone happens to come across older materials where the issue of color banding appears – Hisense has a solution for that. In the U7Q PRO, we find a feature called "Smooth and Gradient Picture." Set to the "Medium" level, it works really well – it eliminates most of the gradation issues while not smoothing out the entire image, like blur in Photoshop. 😉 Film grain remains, details do not disappear – this is exactly how it should work. Kudos for the implementation!

As for scaling weaker materials, it’s just good. It’s not at the level of the most expensive TVs with advanced upscaling, but older content looks good. There is some mild aliasing at very low resolutions, but that’s completely normal and hard to avoid. On the plus side – even with the oldest materials, there is no overscan effect; the image is not cropped or artificially stretched.

The maximum refresh rate on the LG B4 is 120 Hz, the bare minimum for those requiring high image fluidity. The manufacturer has equipped the TV with a multi-stage motion smoother called "TruMotion." This feature is split into two sliders: one controls the sharpness of moving images (De-Blur) and the other adjusts judder (De-Judder). Both sliders can be set between 0 and 10, with each level affecting the smoothness, so users can easily find their preferred setting.

The LG OLED B4 panel boasts an impressive average response time of 0.1 ms (based on our measurements), delivering an exceptionally clear image that surpasses the capabilities of LCD TVs, which often have response times of several milliseconds. This is particularly noticeable in the "UFO Test" images, where no trailing blur is visible behind moving objects.

“Speed” – this word was mentioned most frequently during our tests of the U7Q PRO. The television is equipped with a 165 Hz panel, which is impressive in itself – especially since we are talking about a model in the mid-price range. Of course, PC gamers will benefit the most from its full capabilities, but even during everyday viewing, it is evident that this is a fast and efficient panel. Like most modern televisions, the U7Q PRO can also enhance the smoothness of movies that are primarily shot in 24 frames. In the menu, there is a slider that allows you to adjust the effect to your preferences – from a more cinematic feel, with subtle motion, to stronger smoothing with the characteristic “soap opera effect.”

The LG B4 has four full HDMI 2.1 ports, each providing 48Gbps bandwidth. This ensures smooth activation of all relevant features without issues, making the television highly suitable for gaming. With its low input lag and extensive functionality, including well-implemented HGIG mode and Dolby Vision gaming with low latency, the B4 is a strong contender for gamers who demand high quality.

A standout feature is GameBar, which allows for on-the-fly adjustments without interrupting gameplay, as well as image adaptations for those with visual impairments. Another key point is that when VRR technology is enabled, the television maintains its contrast, thanks to the OLED panel's structure, though slight flickering in grey shades is to be expected.

In conclusion, the LG B4 is an ideal choice for gamers, seamlessly combining high performance with excellent gaming features. Its 120Hz panel and HDMI 2.1 ports make it a standout option for those seeking top-tier gaming experiences.

The Hisense U7Q PRO is a television that seems almost designed for gamers. It has practically everything you could expect from a gaming screen: variable refresh rate (VRR), automatic mode (ALLM), and as many as four HDMI 2.1b ports with full bandwidth of 48 Gb/s. Additionally, there is a clear and quite functional Game Bar, as well as a well-implemented Dolby Vision GAMING mode that works seamlessly with Xbox Series S and X consoles.

Sounds like perfection? Well, almost. Unfortunately, Hisense has yet to implement the HGiG feature, which is the system's limit on tone mapping on the TV's side. This means that when configuring HDR brightness on the console, we do it "by eye" or look for settings in online guides because the screen doesn't show the real range of its brightness. It's a pity - because HGiG makes it easier to match the console to the TV and helps avoid clipping or overly dark scenes in HDR games.

Fortunately, the other elements work very well. Signal delay (input lag) is low, responsiveness is excellent, and the handling of other functions is flawless. And although not everything worked perfectly, the U7Q PRO can still be recommended to gamers without hesitation.