The C1 is a superb performer, every bit as capable as the best TVs I've reviewed. RS-232 port (minijack, for service only).Four HDMI inputs with HDMI 2.1, HDCP 2.2.There's also a dedicated headphone or analog audio output and another for IR blasters, which could ease some installations. The selection of connections is otherwise top-notch, though it no longer supports analog component video. Check out our guide to OLED burn-in for more. We at CNET don't consider burn-in a reason for most people to avoid buying an OLED TV, however. All OLED TVs are more subject to both temporary and permanent image retention, aka burn-in, than LCD TVs.High-end LCDs are brighter than OLEDs (especially with HDR), but the picture quality on OLED TVs I've reviewed is superior overall. The best LCD TVs I've reviewed so far scored a 9 in image quality, while OLEDs TVs like the C1 have scored a 10.OLED display technology is fundamentally different from the LED LCD technology used in the vast majority of today's TVs, including Samsung and TCL's QLED models.The C1 also lacks a far-field mic for hands-free voice and a Next-Gen TV tuner, both relatively minor extras included on the G1. The C1 also has more sizes than the more expensive G1 series, which offers that Evo panel and a slimmer, wall-mount-centric Gallery design.The A1 lacks HDMI 2.1 and has a less impressive processor, as well as fewer HDMI inputs (three instead of four) and a 60Hz refresh rate. The C1 has more sizes than LG's least expensive OLED TV, the A1 series, as well as better image quality features.See all photos Get to know the LG C1 series

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