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42 flat screen tv9/25/2023 ![]() ![]() ![]() How well does it fare on the A90K? Almost as well. Before now, we’ve only seen it implemented on Sony’s larger sets (the Bravia XR A80J in the previous generation and the Bravia XR A95K in this one), and it’s worked remarkably. On its higher-end models, Sony employs a technique it calls Acoustic Surface Audio+ to turn the screen itself into the TV’s speaker. Though not ideal, this isn’t uncommon with smaller 4K TVs, and it wasn’t enough to prevent the A90K’s picture from being thoroughly satisfying overall. The only picture flaw we noticed was some light smudging of a 1-pixel chess pattern on a 4K test screen we use to see how TVs handle fine detail. 2020 gamut, 72.2% to 71.2%, though neither’s score is objectively impressive.Īs upscaled to 4K from 1080p, Mission: Impossible - Fallout lost none of its densely chiseled immediacy. Finally, the QN90B edged out the Sony in the wider Rec. That’s lower than Samsung’s penultimate QN90B that had readings of 1,143 nits and 981 nits under similar conditions, but the A90K proved better at HDR color, at least as far as the UHDA-P3 color gamut was concerned (it covered a winning 97.66% to the Samsung’s 94.91%). In our HDR tests, the A90K displayed drastically improved brightness, with, for example, 640 nits in Standard and 541 nits in Custom, both at 10% window size. (Many OLED sets get over 100%, but the A90K could do so only in its garish Vivid mode, to the tune of 128.28%.) 709 color gamut was second only to the Vizio’s 99.92%. Thankfully, the Sony’s SDR color was considerably better: Its Delta-E value, which measures the difference between color at the video source and as displayed on the screen (with lower numbers being better), was a category-leading 8.2386, and its 99.78% coverage of the Rec. The 43-inch Samsung QN90B, the A90K’s closest competitor we’ve evaluated, managed 700 and 277 nits in comparable modes the considerably lower priced 43-inch Samsung Q60B hit 378 and 315, and the 50-inch Vizio M-Series Quantum 499 nits in Standard (its Calibrated Dark result was lower, at 121 nits). In Standard picture mode, it was 219 nits in Custom (Sony’s version of calibrated) it was 206 nits. OLED TVs rarely get overly bright, but the A90K’s SDR brightness was about as low as we’ve seen from TVs in this size range. In our lab tests, performed with an X-Rite i1 Pro spectrophotometer, SpectraCal VideoForge Pro pattern generator, and Portrait Displays’ Calman calibration software, the A90K demonstrated itself to be more or less what you would anticipate from an OLED in this price stratum as outfitted with Sony’s unique collection of XR-branded, on-the-fly image processing technologies: strong, but not life-changing. ![]()
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