HDMI 2.1 is the backbone of modern home entertainment systems. It supports 8K video playback, 4K/120Hz gaming, VRR, ALLM, and eARC for uncompressed, high-quality audio. However, many users often miss these advantages due to incorrect settings, outdated cables, or firmware limitations. This guide takes you step by step through the HDMI 2.1 AV receiver setup. […]

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