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Yes, it supports HDMI 2.1 as well as Dolby Vision and Dolby Atmos.
Sorry, there was a problem. Please try again later.Hello, Kim. The 55-inch Class LG OLED evo C4 4K Smart TV 2024, Model # OLED55C4PUA has four HDMI 2.1 ports, and HDMI 2 is an HDMI eARC port. It does not have any HDMI Outputs, however, the HDMI eARC port is a two-way communication protocol that allows HDMI to work as both an input for video and audio and an output for audio when it is connected to another device with an HDMI ARC/HDMI eARC port over a single HDMI connection. ARC doesn’t allow you to bitstream the full-fat high-quality codecs such as Dolby TrueHD, Dolby Atmos, DTS-HD Master Audio, or DTS:X soundtracks that you find on Blu-rays and 4K Blu-rays. It simply strips out the core 5.1 data stream. If you want this level of functionality, you’ll need HDMI eARC. ARC can, however, allow you to receive Dolby Atmos audio from streaming services such as Netflix, Disney Plus and Amazon Prime Video, as these services embed Dolby Atmos in the lossy Dolby Digital Plus format, which ARC can handle. Enhanced Audio Return Channel (also known as eARC) is the next generation of ARC. It’s a feature implemented in the most recent HDMI 2.1 specification. You'll need two devices with compatible HDMI eARC sockets for the protocol to work. While a device doesn't specifically have to be HDMI 2.1-certified, HDMI 2.1 certification does just about guarantee eARC support...^Ivan.
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