Hisense UR9S vs LG OLED B6

Hisense UR9S is without doubt a show of force from the Chinese manufacturer when it comes to luminance. On a synthetic test pattern the panel hit as much as 2600 nits, which is an impressive result. But it’s important to clearly separate laboratory results from filmic realities. In real-world content the UR9S behaves much more restrained. Peak brightness in balanced scenes hovers around 1500 nits. In demanding, dark shots, where algorithms must both preserve deep blacks and precisely light small details, brightness can fall drastically, even to around 400 nits. The discrepancy between the chart and reality is therefore huge. This is a direct consequence of conservative local dimming behaviour. When a bright object occupies a large part of the frame, the system can easily maintain a high brightness level. However, in night scenes the priority becomes protecting blacks and fighting halo artefacts (unsightly glows around bright edges). To avoid contrast degradation the TV drastically limits light output. Even so, the UR9S can still produce a very powerful, engaging HDR effect that impresses in bright, spectacular sequences.

Colour gamut coverage

On test patterns the Hisense UR9S performs excellently in terms of colour. DCI-P3 coverage is almost 100%, and the wide BT.2020 as much as 93%. Those are figures even the best QD-OLED TVs don't reach. But again, synthetic measurements are one thing, films and series are another. In real-world scenes the figures dropped to 93% for DCI-P3 and 81% for BT.2020. That’s still a great result, but the advantage of RGB Mini LED is no longer as dramatic as manufacturers promise in marketing materials. One could even say their capability is now close to that of quantum-dot-equipped TVs, the so-called QLEDs. So why is that? To a large extent, colour reproduction here depends on the way the backlight zones operate. When a strongly saturated colour appears next to white or another, more complex element, a single zone must handle both parts of the image at once. Under such conditions the backlight can't maintain extreme saturation of a given colour on the screen, because the emitted light takes on a character closer to white. In the UR9S this has been refined quite well, but still not enough for the TV to maintain such high colour saturation in every situation.

LG B6 is a moderately bright OLED. After calibration it reaches around 800 nits, roughly 200 nits more than last year's B5. That's down to LG Display's new budget OLED SE panel. In practice this simply provides a bit more headroom and makes HDR look fuller in many scenes than on last year's lower-end OLEDs. That doesn't mean the B6 has no limitations. In very bright shots, when a large part of the screen is brightly lit, brightness can fall below 400 nits. This behaviour is typical of OLED TVs (especially in this segment), and it's then you see the biggest difference compared with pricier models. All the same, we rate the B6's results as really solid. It's still not a TV built to break brightness records, but the HDR effect is strong enough that films really feel like a step up from ordinary SDR picture.

Colour gamut

Using the OLED SE panel has had some impact on wide colour-gamut coverage. Compared with last year's model the figures have dropped by a few percentage points. DCI-P3 reaches about 96%, and BT.2020 around 71%. That doesn't mean the colours on the LG B6 are weak. In most films and TV series they look vivid, well saturated and simply pleasing to the eye. You only notice the difference in very bright, highly colourful scenes. Then colours lose some intensity compared with QD-OLED panels. This is due to the WOLED panel structure. In addition to the red, green and blue subpixels it also uses a white subpixel that helps boost brightness. This comes at a cost: at very high luminance some of the colour is effectively 'diluted' by the white light, so saturation of some hues can be slightly lower. Day-to-day it's not a big problem, but you can see it in the most demanding scenes.

We tested the Hisense UR9S in Filmmaker Mode, which out of the box provides the best image reproduction. In HDR content the TV performed quite well in that regard. The white balance didn't show major errors, and the brightness response, while following Hisense's typical curve, was kept at a reasonable level. The picture therefore wasn't overly brightened or noticeably colour-distorted. The same mode fared much worse with SDR content, the kind we watch most often, like broadcast TV or YouTube. The white balance was strongly shifted toward red and blue, giving the image a slightly pink tint. This also affected the gamma curve. Instead of approaching the reference value of 2.4, it was closer to 2.0, which made the image look too bright, especially in midtones and darker areas. Filmmaker Mode therefore remains the best out-of-the-box choice, but it's not without flaws.

We tested the LG B6 in Filmmaker Mode, the best picture setting available straight out of the box. ISF modes give very similar results, but in our tests we always stick to Filmmaker Mode for better comparison with other TVs. Each of them is a far better starting point than Vivid or Eco, where the picture is heavily boosted and noticeably less natural. For SDR content the factory settings perform really well. Colour errors are small, gamma behaves correctly, and the picture looks natural during regular viewing and does not seem overly enhanced.

It's a bit worse with HDR. Once you start playing that kind of content it's quickly apparent the white balance isn't perfectly set. Too much blue and red makes the image take on a slightly pink tint. Colour gamut measurements and the ColorChecker confirm this, with samples clearly shifting in that direction. It's not a defect that completely ruins the picture, but you can notice it with HDR films. So anyone who wants the most faithful image should consider calibration, which we cover later in the review.

After calibration, the biggest improvement was in SDR, although we also refined the HDR picture. Hisense offers plenty of calibration controls in the menu, so we were able to precisely correct the white balance and other picture errors. The most important change was removing the pink cast that had been clearly visible in SDR material. After calibration the image looks much more natural, especially in everyday content like TV and YouTube. Colour reproduction errors on the ColorChecker chart are very small after calibration. The vast majority of colours fall below values of 2–3, which is at a level very hard for the human eye to detect. The only thing we couldn't completely eliminate is the way Hisense TVs map tones in HDR. It affects how brightness is distributed in films and can subtly 'beautify' the image, rather than strictly following the creators' intent. For less experienced viewers this can create a stronger 'wow' effect, but it won't always fully match how the material should look.

During calibration we focused mainly on HDR material, because that’s where the factory settings needed the most correction. We didn’t neglect SDR, though. After tuning it was brought almost to perfection. Colours are very accurate and brightness is controlled as it should be. The biggest change in HDR came from improving the white balance. After removing excess red and blue the pinkish tint disappeared and the image became much more natural. Skin tones, whites and all colours that had previously leaned towards pink improved. After calibration most errors fell below Delta E 2-3, the threshold at which an average viewer stops noticing differences with the naked eye. So the LG B6 can produce a very accurate picture, especially for the manufacturer’s entry-level OLED model.

Digital image processing has been one of Hisense's strengths for the past two years, and the UR9S is no different. The manufacturer uses the Hi-View AI Engine RGB processor, which in practice is based on the well-known MediaTek Pentonic 800 platform, previously used in models such as the U8Q. The TV handles upscaling lower-resolution material to 4K very well, and copes with low-bitrate content, where various compression artefacts can easily appear. Thanks to a function called "Smooth and gradient image", the picture stays detailed without looking overly sharpened or artificially smoothed. When watching regular broadcast TV or older, lower-quality material, the UR9S can get a surprising amount out of it. In terms of digital image processing, this is one of the most finely tuned LCD TVs we've had the chance to test.

LG B6 copes very well with lower-quality material. Much of that is down to effective digital image processing, which can mask some source imperfections without excessively smoothing the whole scene. The "Smooth Gradation" feature proves particularly useful. It lets you noticeably reduce posterization mentioned earlier, especially in dark parts of the image. The safest choice is to set it to Low or Medium. The feature still effectively smooths out harsh tonal transitions, but doesn't yet interfere too much with fine details. Die-hard purists can of course leave it off. Upscaling to 4K also performs very well. Full HD and 720p content retain a fair amount of detail, and the image is neither overly sharpened nor heavily blurred. Some limitations are only noticeable with very poor sources below 720p, where the smallest text and fine elements aren't always perfectly sharp, but this is true for almost every other TV on the market.

The Hisense UR9S is one of the first TVs on the market with a 4K panel and a 170 Hz refresh rate. In the larger sizes, 75 and 85 inches, that goes up to 180 Hz. Such a high refresh rate will mainly benefit owners of very powerful computers. Films and TV series are still most often watched at 24 fps, and sports broadcasts at 50 fps, so in everyday use the panel's response time and the behaviour of the motion smoothing are more important. In that respect the UR9S performs very well. Panel motion blur is low, as our UFO test also confirmed. Moving objects do not leave a pronounced smear, so the picture remains clear even in fast scenes.

One of the biggest advantages of OLED panels is their very fast pixel response time. That keeps the picture sharp and prevents visible smearing that often appears on LCD TVs. It does have a downside, though. During slow camera pans motion can look a bit choppier than on LCD screens, where the slower panel naturally masks some of that effect. Fortunately, on the LG B6 this is easy to tame with TruMotion. With the motion smoothing set correctly you can get smoother motion without giving the picture an exaggerated soap-opera effect.

The Hisense UR9S is very well set up for gaming. All three HDMI ports are HDMI 2.1 and offer the full 48 Gb/s bandwidth. The TV supports 4K at 170 Hz, and on larger screen sizes even 180 Hz. You also get VRR, ALLM, NVIDIA G-Sync and AMD FreeSync, so it's hard to fault the basics. PC gamers can additionally enable DLG mode. After switching the resolution to Full HD the refresh rate can rise up to 330 Hz. That's more of an option for a narrow group of users, but it shows how much headroom the panel has. Hisense also added a Game Bar, where you can quickly change the main settings, check the refresh rate, or enable a crosshair and minimap zoom.

The biggest drawback remains the lack of a properly working HGiG implementation. The TV still uses its own tone mapping, which makes setting up HDR on consoles a bit awkward. In our case values around 1500–2000 nits worked best, but it's worth checking which setting keeps all the detail in the brightest parts of the image.

LG OLED B6 has plenty going for gamers; it's a complete base for the PS5, Xbox Series X/S or a solid PC. It comes with four full-size HDMI 2.1 ports with 48 Gb/s bandwidth, so you can forget about annoying cable swapping when you want to connect several newer devices at once. We get a full package of sync technologies, from classic VRR to G-Sync and FreeSync. The panel effortlessly syncs its refresh rate to the frame pacing produced by your console or graphics card. Of course ALLM is present: the B6 automatically recognises when a game is running and immediately cuts latency to a minimum. HDR support is also excellent. The TV supports Dolby Vision, and a correctly implemented HGiG means that after an initial calibration in the console settings the picture won't suffer from blown-out whites or lost detail in bright areas. The icing on the cake is the Game Bar. Instead of digging through the full menu mid-game, a single click lets you correct shadow visibility, tweak chosen parameters or simply check the display's current mode. All of this makes the LG B6 a great choice for gamers.